Tutoring for physics

Online tutoring is a synchronous method of tutoring where the instructor and somebody do not connection forgather to tackling but meets through transmitting devices homophonic Webcams, Mike, and Headset etc with the supply of net reparation. Though online tutoring is a noise advantageous method over the unimaginative constitute to disagreement acquisition, parents are existent choosy in their yield of tutors and tutorials as they are rattling attached active their soul. So, they want to use the expression of the unmatched online tutor set.

In online tutoring for physics, science tutors are the optimal tutors,as they are providing large function to the students.Thses tutors calculate every problems of the students and unsubtle all the doubts.Also they are forthcoming 24/7 for students.They work the students to do their prep also.They victimised someone whiteboard to create and discerning the doubts of students.As a object these onlne maths tutors are doing high job through online.

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Online physics tutoring

Online tutoring is a contemporary method of tutoring where the instructor and scholar do not encounter meet to tackling but meets through transmission devices same Webcams, Microphone, and Headset etc with the help of net maintenance. Though online tutoring is a rattling beneficial method over the stereotypic present to encounter acquisition, parents are actual choosy in their pick of tutors and tutorials as they're rattling involved about their soul. So, they desire to make use of the activity of the incomparable online tutor set.

In online physics tutoring, tutors are the best tutors, as they're providing great service to the scholars. Thses tutors solve every problems of the scholars and clear all the doubts. Also they're available 24/7 for students. They help the scholars to do their home work also. They used white board to write and clear the doubts of students .As a whole these online math tutors are doing great job through online.

Also students can get other online help like algebra 2 online tutor, math tutoring, calculus tutorial etc.

Drift velocity

The drift velocity that a particle such as an electron attains due to an electric field. Also see the velocity definition.Also see the given link to know about average velocity.

Since current is proportional to drift velocity, which is, in turn, proportional to the magnitude of an external electric field, Ohm's law can be explained in terms of drift velocity.
Drift velocity is expressed in the following equations: , where J_drift is the current density, σ is charge density in units c/m³, and v_avg is the average velocity of the carriers (drift velocity).

Example:Calculate the drift velocity of electrons in a metal conductor of area of cross-section lO^Wfor a current of 20A. Assume that there are 8-4 x 10²⁸ electrons per cubic metre; Charge on the electron = 1-6 x 10~¹⁹C.
Solution
We know that
I = n₀ev_dA; Drift Velocity v =——
"n^eA
₌_20_
84 x 10²⁸ x 1 -6 x 10~¹⁹ x 10^-5 = 1-485 xlO'W¹

U.S. navy veteran scam

The man who once rubbed shoulders with GOP political luminaries is  wanted by Ohio state authorities who say the $100 million he raised in the name of a charity for U.S. Navy veterans cannot be located.

He used the names Bobby Thompson and Ronnie Brittain, but authorities said that both were stolen identities. The U.S. Navy Veterans Association,his charity, ran its national headquarters in Washington, D.C., out of a post office box at a UPS store.
Ohio Attorney General Richard Cordray blamed that this alleged con artist had done "in the charitable sphere what Bernie Madoff did in the investment sphere. It's shocking and discouraging and to think so many people wanted to give to veterans and in fact they were giving to this man and his sham organization."

Thompson collected around $100 million over the past decade from donors who thought they were contributing to a legitimate veterans service organization, according to Cordray, and 99 percent of the funds are now unaccounted for. He donated to mostly Republican prominent politicians, more than $200,000 to.

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Paid survey scam

Most of us get easily hooked on earning money using survey sites. Paid survey sites may pay you a pittance for completing surveys. Most sites look very organized and professional but these are most likely to be scams. Here is what you need to know about Paid Survey Scams

1)You should not have to pay a registration fee or membership fee to take a survey

2) Never give your credit card number when you make payments

3)Even though the site specifies that the payment is a one time fee, there is no guarantee that it is; victims warn that they were repeatedly charged membership fees. There are some scam sites though that offers a money back guarantee.

4)If you get a genuine paid survey site, then it a great work at home job.

5) Testimonies are not always true. They could be bogus stories that are used to lure victims.

6)Check out what the forums say about paid survey scams.

7) Even though the website looks genuine it could be a scam.

There is proof that some one really got paid. The cheque is featured with a very attractive amount. This alone does not prove that paid surveys are scam free.

The information you provide to paid survey scam sites are sold to other scammers.

- Check out the paid survey site and make sure that it's not a scam. Perform a 'whois' to check the credentials of the site

- Check the Better Businesses Bureau, if a complaint has been logged against the survey site.

- Never trust sites that are trying to prove that they are a genuine site and talk about scams. These paid survey sites generally turn out to be scams.

- The paid surveys which are scams say they pay between $ 50 - $ 60 per survey.

- A trick that paid survey scammers use is once you complete a couple of surveys they entice you to take on higher paying surveys. But in order to do this you need to provide personal information such as you likes and dislikes, your financial burdens, your personal assets and so on.

- Genuine Paid Surveys sites do not ask for registration and membership fees.

- Check the surveys out; some of them are not even realistic. These sites are scams

- Communicate with people who work from homes, especially those who work with surveys.

- If you find the right survey site stick to it. Those sites that promise huge fees maybe a scam.

You can also see the link provided here on tutorvista scam definition. Here you can find the meaning of scam which will be of helpful to you.

Adoption/wildlife scams

The adoption of children or animals over the internet is one of the most popular scam.  Mostly, the perpetrators of child adoption fraud  claim to be indigent parents unable to care for a child or members of the clergy working at a Cameroonian orphanage seeking a good home for a child.  Another versions of this fraud involve wildlife, including birds (often parrots), dogs and monkeys.  The scammers start to build a relationship with the victim by offering the fictitious child or animal for free, asking the victim to pay only a small amount to cover the cost of shipping.  This is followed by a string of additional requests, this time for more money due to ‘unforeseen expenses’, such as court costs, airport fees, customs duties, and medical costs.   The scammers will also claim that the fictitious baby or animal will be abandoned at the airport unless they are unable to pay a non-existent fee, and the victim will be threatened with the loss of thousands of dollars.

Americans need to be very cautious about sending money or traveling to Cameroon to adopt a child from an orphanage they have only heard about through e-mails. Cameroon does not have adoption agencies.  In general, any orphanage can release an orphan for adoption.  However,  to help in protecting themselves and the children from the possibility of fraud or other serious problems, prospective adoptive parents are advised to consider first the list of accredited orphanages available at the Ministry of Social Affairs. If prospective adoptive parents want to hire a Cameroonian attorney to assist with the adoption, they can obtain a list of attorneys from the U.S. Embassy in Yaoundé.

According to the U.S. Embassy there are strict legal regulations surrounding endangered species and the importation of any wildlife into the United States. Purchase wildlife through the internet should be avoided.

Here I am also providing you a link - tutorvista scam definition, whare you can find the meaning of scam.I hope this blog give you the required knowledge on scam.

heat of fusion of water

In this blog we are going to discuss about heat of fusion of water.
First,Keep a bowl of water in the freezer. The water gives heat gradually which is indicated by reduction in temperature.
 

Once the water temperature reaches 0oC (or 32oF) the temperature reading will stay constant at this temperature. This is known as freezing temperature of  water. With the freezer  running and running, you will find that water slowly become solid. At that situation, the heat that has removed from water is the heat of fusion of water and the freezer does the work of removal of this heat. The amount of work completed by the freezer is the amount of energy necessary to remove this heat of fusion.


four times the whole quantity of water becomes ice, then again the temperature of ice starts dropping with further in put of energy.

Also see the given link to know about heat of vaporization water.

Next time we will discuss more about heat of fusion of water.

Please give your reply.

temperature of boiling water

In this blog we are going to discuss about temperature of boiling water.

Water boiling point temperature is the temperature at which the burden of the baptize breath equals the atmospheric burden surrounding the water. Baptize in a exhaustion ambiance has a baking point lower than the baking point of baptize is at atmospheric pressure.

one time the baptize temperature alcove 0oC (or 32oF) the temperature account will break connected at this temperature. This is called as the freezing temperature of the water. With the freezer still walking, you will acquisition that baptize uninteresting become solid. At this condition, the calefaction that is removed from baptize is the heat of fusion of water and the freezer does the plan of abatement of this heat. The bulk of plan completed by the freezer is the bulk of activity appropriate to abolish this water of fusion.

Now you can see this given link heat of fusion of water.

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elastic energy

In this blog we are going to discuss about one physics topic elastic energy.To know about various energy sources see the link types of energy sources.
Conservation of energy is entrenched by few forces like hidebound and non blimpish forces. Elastic is one method for conservation of energy and it is physical property.The separated system confirm the summate turn of push with unfailing indication. Viscoelastic collisions and many standard quantities are victimised in advance of vim.

Examples for Conservation of Energy Elastic:

Elastic collision

                   If the numerate kinetic vitality of the system relic continuous during a contact, the contact is said to be springy. For information, subatomic particles collision is mostly springlike.The striking of two poise balls is nearly bouncy.

Elastic collision in one dimension:

             Let the two bodies tumbling in a continuous line clash. The precept of conservation of vim gives m1( u1 - v1) = m2( v2 - u2). For pliable contact, the kinetic healthiness of system relic unremitting. Moldable change the velocities after contact.

Flexile contact in two magnitude:

           The kinetic forcefulness is conserved in live impinging.For instance, the two particles are collided with apiece remaining.The two dimension has the equalization for conservation of energy and appraise the flexile property.
Next time we will see more about this concept.
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Type of energy

In this blog we are going to discuss about type of energy.Also to know more about energy see the link kinds of energy.
It is ofttimes said that a person A is energetic than a person B. The significant of this statement is that a being A can do more work than the person B. Person. A is said to have more energy. Energy is requisite to do several apply. After doing a lot of job, one feels fatigued and beggary more liveliness. Thusly, anything which is able of doing touch has strength. The ability of doing make by a body or an target is illustrious as the Drive is settled as the power or the capacity to do output.
Types of energy:

Push can be measured in Joules. Physicist is titled after an Spin physicist titled Outlaw Town Joule who lived from 1818 to 1889. He unconcealed that alter is a write of sprightliness. One joule is the turn of drive requisite to raise 1 walk about 9 inches.
Types of Doe:

Kinetic Energy- The energy controlled by a body by good of its happening is known as kinetic vim. For example a affecting bus, Mobile bullets, running h2o etc.

Possibleness Energy-  The liveliness possessed by a embody by virtuousness of its stance or form, is renowned as Potential vigor. For lesson food stored in a dam , a remove falsification on the top of structure, a fire outpouring of a vigil, a extended bow and arrow  etc.

Mechanical Energy- The sum of kinetic doe and latent vigor of a body is famed as automatic energy.
Next time we will discuss more about this concept.
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Types of waves

TYPES OF WAVES: -
In this blog we are going to discuss about types of waves.Below types of waves and its types.
To know about physics concept  reflection see Light Reflection.
What is wave?

Wave is a kerfuffle produced in a line due to the repeated vibrations of the particles of the occupation, around their construction business.

Waves are broadly secret as: -

1) Longitudinal waves
2) Transversal Waves

1) Longitudinal waves
A reservist, which propagates along the direction of atmosphere of the particles of the transmission, is called longitudinal twist.
Wholesome waves are longitudinal in nature.
The regions where the molecules amount fireman are titled compressions.
The regions where the molecules displace separated are called rarefactions.
That is longitudinal waves move in the conformation of compressions and rarefactions.

2) Transverse movement
A reservist, which propagates in a route perpendicular to the content of undulation of the particles of the occupation, is titled transversal waving.
Electromagnetic waves and vibrations in a advance of a string are transverse in nature.
The elevated portions 
Next time we will see more about it.

Velocity Equation

                             VELOCITY EQUATION

In this blog we are going to discuss about one physics topic velocity equation.Also see the given link to know about average velocity.

Velocity: -

It is the speed in a particular direction.

Velocity of the wind is equal to 200 kilometers per hour northeast.

Velocity is a vector quantity.

Velocity has magnitude as well as direction.

The SI Unit of velocity is metre per second.

Since velocity is a vector quantity it can be negative.

Velocity Equation: -

Velocity of sound waves can be determined,

According to echo method, velocity equation is

Velocity of sound = 2d/t

i. e. V=2d/t

Where,

          d =distance between the source of sound and the obstacle, which produces echo.

          t=time taken.

          2d=the distance traveled as the sound waves travel to and fro.

This just a small concept on velocity equation,now try to get more knowledge on this concept.

Next time we will discuss about types of waves,as it is also a important concept in physics.

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Different Types Of Waves

In this blog we are going to discuss about different types of waves. Wave is a stir produced in a         transmission due to the repeated vibrations of the particles of the psychic, around their equipoise situation. Waves are broadly grouped as: - Longitudinal waves  Transverse Waves Crosswise waves propagate in the work of crests and troughs. Whereas In a longitudinal motion the particles of the occupation vacillate antiparallel to the path of propagation of the twist. But in transverse woman particles of the psychic sway perpendicular to the instruction of spreading of the woman. The longitudinal curve propagates in the constitute of compressions and rarefactions. The transverse undulation propagates in the taxon of crests and troughs. In the housing of longitudinal gesticulate condensation and a rarefaction comprise one motion. In crosswise curve a top and one incurvation make one gesticulate. This is just a introduction of to different types of waves.Next time we will discuss about another physics topics light reflection.

Also for any science help we can go for online science help.

Free Physics Help

Improvement of communication help online or online tutoring to gained a lot importance as it benefits. Difference is that in Online help the student and tutor does not meet head to head but meets through multimedia devices with the help of net service.
  In Online help the scholars can meet the teachers through net and tutors can report and clear the doubts of the scholars like tutors do in the traditional process of tutoring. Here the things can be cleared through e-meeting.
 If free online help is given in the subject phusics then it is called online free physics help.

BENEFITS OF PHYSICS HELP ONLINE: - 
Physics Home work Helper helps the scholars in their every day home work. As soon as the student submits his home work a teacher joins him and they help him in doing his home work through multimedia devices like Webcams, Microphone, and Headset etc with the help of net service. 
These services 24 round the clock and students can solve their issue through live online chat and emails. 


These services are available for students al over the world. So, students can receive this service from anywhere in the globe. 

Subject specialists are provided to students for helping them in their home work So, every idea is cleared and explicated well. 

It can help in the clearing of the doubts which sometimes stay unlearned in the class. This helps the student to be much advance in the class and do better in his examination.

 This service can assist the student to do his home work in time and they will be much confident in the class as each and every idea will be cleared by the home work helpe

 They provide high quality service, complete the assignments exactly which assist the scholars to do their work more effectively.
Like that student can get help of every subjects like free pre algebra help,free calculus help,free geometry help etc..... 

Define Matter

Here in this blog wev are going to discuss about one physics topic define matter.
Matter can exist in various phases: solid, liquid, gas, or plasma. Most substances can transition between these phases based on the amount of heat the material absorbs

Matter can be identified by certain properties or behaviour. 

Balloons, football and orange juice are all examples of matter having certain properties.

Matter is an entity that takes up space and occupies it. The amount of space occupied by any matter is called its volume.

Watch the difference in the levels of the pans of the weighing scale shown here

The inflated balloon has air in it and is therefore heavier than the deflated one.

Air is matter and matter has weight.

Observe that the ice sinks down by the force of the juice that’s being poured.

The force exerted by matter is called its pressure

Matter can be identified by certain characters, like it has weight ,occupies space and exerts pressure.

This all about what is matter. But along with the matter definition you should know the various types of matter.

Next blog we will learn more about this concept along with some examples.

Types of forces

Types of forces

In this blog we are going to learn about types of forces very briefly.

When you lift something, push something, or otherwise manipulate an object, you are exerting a force. A force is defined practically as a push or a pull—essentially it’s what makes things move. A force is called vector quantity, as which has both a magnitude and a direction.

We can divide force into two types:

 Contact Forces and Non contact Forces

Contact Forces:

The forces which act on bodies when they are in actual contact are called the contact forces.
a)Frictional Forces:When a body is slided over a rough surface,a force acts on the body parallel to the surface in direction opposite to the motion of the body.This is called the frictional force.
like,a book placed on the table top is pushed to the right,the force of friction acts on the book towards the left.this force resists the motion of book on the rough surface.
b)Normal reaction force:When a body is placed on a surface,the body exerts a force on the surface,but the body does not move.This is because the surface exerts an equal and opposite force on the body normal to the surface which is called the normal reaction force.
c)Tension force as applied through strings:When a body is suspended by a string,the body pulls the string vertically downwards due to its weight W and the string pulls the body upwards by a force which balances the weight of the body. This force is called the tension force T.
d)Force exerted by a spring:A spring in its original form does not exert any force on the object attached to its end.A compressed spring pushes away the object attached at its end,while a stretched spring pulls in the object attached at its end.
Thus,keeping one end of the spring fixed if its other end id displaced, the spring exerts a force which is directly proportional to the displacement of spring and it is in direction opposite to the direction of displacement.This force is called the restoring force.
e)Force exerted during collision:When two bodies collide,equal and opposite forces act on each body which make them to move apart after the collision.
f)Force applied as a pull or push:When a body is pushed or pulled.its get displaced.

Non-contact Forces:

The forces which act on bodies without being physically touched,are called the non-contact forces.
a)Gravitational force:The force due to the pull of gravity is called the gravitational force.It causes motion in the body downward.It is the gravitational force due to which a body released from a height,falls down.
Example:A ball placed on a table starts rolling down when the table is tilted.
b)Electrostatic Force:The force between the two point charges placed at a separation is called the electrostatic force.Two like charges repel,while the unlike charges attract each other.
c)Magnetic force:The force between the two magnetic poles placed at a separation is called magnetic force.Two like poles repel,while the unlike poles attract each other.
This is all about forces and  types of forces definition.I believed that you got an idea on it So,next tme we will discuss more about it..

Light eflection

In this blog we are going to learn  about light reflection.But before that do you know what is reflection?

Reflection is the change in direction of a wave at an interface which makes it return to the original medium.this was discovered by a scientist.

Types of Reflection

there are two types of light  Reflection specular reflection and diffuse reflection.

 Regular reflection is one of the perfect, mirror-like reflection of light.

In this type of reflection the reflected rays are also parallel to each other.

Reflection in  mirror,  water surface and highly polished floors, are examples of regular reflections.

Mirror

Any smooth polished surface which can reflect most of the light incident on it is called mirror or reflecting surface

Incident ray

The ray of light which strikes the reflecting surface is called the incident ray.

 AB is the incident ray

Point of incidence

The point on the reflecting surface at which a ray of light strikes is called the point of incidence. B is point of the incidence

Reflected ray

The ray of light which bounces back into the same medium after reflection from the reflecting surface is called the reflected ray.

Normal

The perpendicular drawn to the surface at the point of incidence is called the normal.

Angle of incidence

The angle which the incident ray makes with the normal at the point of incidence is called angle of incidence.

Angle of reflection

The angle which the reflected ray makes with the normal at the point of incidence is called the angle of reflection. .

Next time we will learn more about this concept.

Adding vectors

In this blog we are going to learn about one mathematical concept adding vector.But do you know how to define vector?

A vector is a mathematical concept that has both a magnitude and direction. It is often represented in variable form in bold face with an arrow above it. Many quantities in physics are vector quantities.

The process of adding two or more than two vectors is called 'addition or composition of vectors' or adding vectors.

There are three types of  law for adding  vector and what condition they work.

Triangle law of vectors

If two vectors are represented  magnitude and direction by the two sides of a triangle taken in the same order, then the resultant is represented completely, in magnitude and direction, by the third side of the triangle taken in the opposite order.

This law is used for the addition of two vectors.

Parallelogram law of vectors

If two vectors, act simultaneously at a point, can be represented  in magnitude and direction by the two adjacent sides of a parallelogram drawn from a point, then the resultant is represented completely  in magnitude and direction by the diagonal of the parallelogram passing through that point.”

This statement is known as parallelogram law of vectors.

Polygon law of vectors

If a number of vector could be represented both in magnitude and direction by the sides of an open convex polygon taken in the same order, then the resultant is represented completely in magnitude and direction by the closing side of the polygon, taken in the opposite order."

This is just a small concept of vector .We have other concept like subtracting vector,multification of vector,and dividing vector.Next blog we will learn more about about these above mention vectors.I believed you got this concept.

Inertia Examples

In this blog we are going to discuss about a physics topic Inertia. Do you know what is inertia?Here I am going to give you the inertia definition with inertia examples. 

There is a glass tumbler placed on a table over which is placed a card board

Now place a coin on the card board

The tumbler, the card board and the coin are all at rest

Now flick the card board. What do you observe?

You will notice that the coin falls vertically downwards

Observe that the coin does not move with the cardboard

However the coin falls downwards due to force of gravity

The coin does not move with the card board because of the property of matter called inertia

Inertia is the inability of a body to change by itself either the state of rest or of uniform motion along a straight line unless an external force is applied on it

Now let me give you another inertia example.

Here you can see the passengers in the bus leaning backward when the bus suddenly starts moving.

Why does this happen?

This is because the upper part of the body of the passengers continues to be at rest while the lower part starts moving along with the bus due to inertia

Similarly when a moving bus stops suddenly, the passengers will fall forward.
I believed that you get the concept  on this topic.Next blog we will discuss more about it.

Longitudinal waves

Longitudinal waves:

In this blog we are going to learn about one of the types of wave which is Longitudinal waves. But before that

What is wave?

Wave is a disturbance produced in a medium due to the repeated vibrations of the particles of the medium, about their equilibrium position.

Waves are broadly classified as: -

1) Longitudinal waves

2) Transverse Waves

1) Longitudinal waves

A wave, which propagates along the direction of vibration of the particles of the medium, is called longitudinal wave.

Sound waves are longitudinal in nature.

The regions where the molecules come closer are called compressions.

The regions where the molecules move apart are called rarefactions.

That is longitudinal waves propagate in the form of compressions and rarefactions. 

See the figure of Longitudinal waves to understand the concept better. Next time we will learn another types of waves Transverse Waves and its behavior with some examples and diagrams.I belived that you got this concept.

TYPES OF WAVES

TYPES OF WAVES: -

 In this blog we are mainly going to discuss about a physics topics types of waves.You everybody know about wave.So,here i am going to discuss about its types.

Wave is a disturbance produced in a medium due to the repeated vibrations of the particles of the medium, about their equilibrium position.

There are mainly two types of waves that we are boardly find:

1) Longitudinal waves

2) Transverse Waves

1) Longitudinal waves

A wave, which propagates along the direction of vibration of the particles of the medium, is called longitudinal wave.

Sound waves are longitudinal in nature.

The regions where the molecules come closer are called compressions.

The regions where the molecules move apart are called rarefactions.

That is longitudinal waves propagate in the form of compressions and rarefactions.

2) Transverse wave

A wave, which propagates in a direction perpendicular to the direction of vibration of the particles of the medium, is called transverse wave.

Electromagnetic waves and vibrations in a string of a violin are transverse in nature.

The elevated portions of the string are called the crests and the depressed portions are called the troughs.

Next time we will learn the difference between these two waves and how it works.

What is reflection

What is reflection:
In this blog we are going to learn about two interesting  physics topics what is Reflection and light reflection.

     Reflection is the change in direction (position) of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated.Reflection follow some laws.they are:

1.     The incident and the reflected ray and then normal to the reflection surface at the point of the incidence lie in the same plane.

2.     The angle which the incident ray (i) makes with the normal is equal to the given angle which the reflected ray makes to the same normal.

3.     Light paths are reversible.

 

Now come to the next topic light reflection.

Reflection of light can be further classified as specular reflection and diffuse reflection.

Specular reflection is the perfect, mirror-like reflection of light.

In this type of reflection the reflected rays are also parallel to each other

Diffuse reflection is uniform reflection of light with no directional dependence for the viewer, e.g., a matte surface such as cardboard.

Next blog we will discuss more about various kind of reflection.

What is matter

What is matter?

In this blog we are goin g to discuss about two Physics topics one is What is matter and other is Kinetic Energy.

Now let me start with What is matter?

Matter is everything that is around us.

Anything that has an existence, due to which one is able to see and feel it directly, is called matter.

Matter can be identified by certain properties or behaviour. 

Balloons, football and orange juice are all examples of matter having certain properties.

Matter is an entity that takes up space and occupies it. The amount of space occupied by any matter is called its volume.

Watch the difference in the levels of the pans of the weighing scale shown here

The inflated balloon has air in it and is therefore heavier than the deflated one.

Air is matter and matter has weight.

Observe that the ice sinks down by the force of the juice that’s being poured.

The force exerted by matter is called its pressure

Matter can be identified by certain properties: -

Matter is anything that

1) Has weight.

2) Occupies space and

3) Exerts pressure.

Now come to the next concept what is kinetics energy?

Energy is the ability or capacity to do work. Every matter of the universe, whether living or non living, human being, animals or plants posses some type of energy in one way or the other.Kinetic energy s a form of energy which is related to the motion of the particle.If a body is at rest then its kinetic energy will be zero.

Lets see some examples of kinetic energy-

A moving train,water falling from high rocks,a walking  man,a moving rocket ete.

So,energy consists of a moving thing is Kinetic energy.

We will discuss more about Kinetic energy in the next blog.

Wavelength formula

Wavelength formula:
In this blog we are going to learn about a physics topic Wavelength formula.So,here I am going to give a little introduction of wave length and wave length formula.But along with this formula we should know about Wave length calculator.
Now let’s begin with wave and wave length formula-
Wavelength is nothing but the distance between the crest and crest in a wave or the distance between the depression and trough in a wave. Crest is the peak of the wave and trough is the low dip of the wave. It is denoted as the symbol of λ..T he distance among two successive points on a wave is called wavelength.
Here is the wave length formula.
λ = v / f
λ (lambda) = wavelength in feet.
V = velocity of propagation in feet per second.
f be the frequency into the HZ.
Conversion of frequency to wavelength:-
f = v / λ
Conversion of wavelength to frequency:-
λ = v / f.
Next time we are going to learn about using this formula how we can solve problems on wave length.

Moment of Inertia Rectangle

Moment of Inertia Rectangle:

 In this blog we are going to learn Moment of Inertia Rectangle.But before that we should know the Inertia difinition  .

Inertia is the inability of a body to change by itself either the state of rest or of uniform motion along a straight line unless an external force is applied on it.

Now let's dicuss about moment of inertia and Moment of Inertia Rectangle.I believe that this concept will halp you to understand moment of inertia cylinder concept also.

You can see a wheel and a uniform disc with the same mass rotating about a same axis.

Why is it difficult to start or stop the wheel than to start or stop the disc even though both of them have same mass?

This is because the force required to start or stop an object undergoing rotational motion depends on the product of the mass of the object and the square of the distance from the axis of rotation to the particles which make up the body.

The product of mass and square of the distance from the axis of rotation is greater in the case of a wheel.

This explains why it is difficult to start or stop a wheel. 

The product of mass of the particle and the square of the distance of the particle from the axis of rotation gives the moment of inertia.

Moment of inertia of a body = m₁r₁ + m₂r₂ + ……….+ m_nr_n.Where m_1,  m₂……….m_n are the masses of the particles constituting the object and r₁, r₂……..r_n are the distances of these particles from the axis of rotation. (To be read as - m₁r₁ + m₂r₂ till m_nr_n)

The equation can also be written as

Where m is the mass of the particle and r is the distance of the particle from the axis of rotation.

The SI unit of moment of inertia is kilogram meter squared and the dimensional formula is ML².

The moment of inertia of a rectangle shape such as this one is easily calculated by using the equation I = 1/12 bh3.

Using this equation we can solve  inertia of a rectangular problems.

 

Inertia Definition

 In this blog we are going to learn about how to define inertia.

I don't know much about inertia definition ,but i believe that this discussion will help you to know inertia definition better.

And one more thing if  you understood this concept than it will help you to more inertia ralated concept like moment of inertia cylinder,moment of inertia rectangle etc.but first of all we should learn understood this difinition.

There is a glass tumbler placed on a table over which is placed a card board

Now place a coin on the card board

The tumbler, the card board and the coin are all at rest

Now flick the card board. What do you observe?

You will notice that the coin falls vertically downwards

Observe that the coin does not move with the cardboard

However the coin falls downwards due to force of gravity

The coin does not move with the card board because of the property of matter called inertia

Inertia is the inability of a body to change by itself either the state of rest or of uniform motion along a straight line unless an external force is applied on it

Now let us understand inertia with the help of another example.

Here you can see the passengers in the bus leaning backward when the bus suddenly starts moving.

Why does this happen?

This is because the upper part of the body of the passengers continues to be at rest while the lower part starts moving along with the bus due to inertia

Similarly when a moving bus stops suddenly, the passengers will fall forward.

Adding Vectors

vectors' or adding vectors.

In this blog we are going to learn about adding vectors and addition of vectors.

When two or more than two vectors are added, we get a single vector called the resultant vector.

The resultant of two or more than two vectors is a single vector which produces the same effect as the individual vectors together produce.

Three laws have been evolved for the addition of vectors.

They are

1) Triangle law of vectors

2) Parallelogram law of vectors

3) Polygon law of vectors

Triangle law of vectors

If two vectors are represented both in magnitude and direction by the two sides of a triangle taken in the same order, then the resultant is represented completely, both in magnitude and direction, by the third side of the triangle taken in the opposite order.

This law is used for the addition of two vectors.

Parallelogram law of vectors

If two vectors, acting simultaneously at a point, can be represented both in magnitude and direction by the two adjacent sides of a parallelogram drawn from a point, then the resultant is represented completely both in magnitude and direction by the diagonal of the parallelogram passing through that point.”

This statement is known as parallelogram law of vectors.

Polygon law of vectors

If a number of vectors can be represented both in magnitude and direction by the sides of an open convex polygon taken in the same order, then the resultant is represented completely in magnitude and direction by the closing side of the polygon, taken in the opposite order."

Vector quantity

Vector quantity: -

What is a physical quantity?

Any quantity that can be measured is a physical quantity.

Physical quantities are classified as vectors and scalars

The physical quantities, which require only magnitude for their complete specification, are called scalars or scalar quantity.

They can be added up based on ordinary rules of algebra.

Quantities such as mass, temperature, speed, time, density, etc., are scalars.

Consider a freely falling body under the action of gravity.

Here the motion of the body is one-dimensional and hence the distance traveled in a given time is a scalar.

The motion of the coins on a carom board is two-dimensional.

Similarly when a spacecraft moves in space the motion will be three-dimensional. Here the concept of direction becomes more primal.

Now there is a need to define a quantity, which has both magnitude and direction.

Such quantities are referred to as vectors or vector quantities.

Velocity, acceleration, weight, force, momentum, etc., are vectors.

Representation of vectors: -

A vector is represented by a straight line with an arrowhead.

The length of the line is equal to or proportional to the magnitude of the vector and the arrowhead shows the direction.

Types of vectors: -

Vectors can be classified as-

collinear vectors

unit vectors

co-initial vectors

negative vectors

zero or null vectors

position vectors

Wave Motion

Motion wave

In Physics term wave motion is nothing but a process by which a disturbance at one point is propagated to another point more remote from the source with no net transport of the material of the medium itself. Waves can take many forms, but there are two fundamental types of waves: “longitudinal” and “transverse” Both of these wave-types are traveling disturbances, but they are different because of the way that they travel.

 When the particles of a medium vibrate in a direction at right angles to the direction of propagation of the disturbance through the medium, the waves set up in the medium are called  transverse waves.
When the particles of a medium vibrate in the direction of propagation of the disturbance through the medium, the waves set up in the medium are called longitudinal waves.Now let's learn something about types of motion  and parts of wave in this blog.
Look at the above figure first one is representing  Transverse Wave and second figure representing longitudinal waves.

Acceleration Formula

What is Acceleration?

The time-rate of change of velocity is called acceleration. Acceleration is a vector quantity which is defined as "the rate at which an object changes its velocity.” Issac Newton is credited as the Founding formula of acceleration. He was the 1st scientist to determine that all moving objects had its own acceleration.
Acceleration is described as the change in velocity over time. It is a vector quantity, acceleration is the rate at which the velocity changes. In general term, acceleration is used for an increase in velocity and a decrease in velocity is known as deceleration.
Let’s see the Acceleration Formula-
a = (vf – vi)/ t (Acceleration is designated by ‘a’.)
 We everybody know that Acceleration,Force and Velocity ,these all are related to one another.So lets get some knowledge on Formula for Force and Formula for Velocity.

Take an Example on Acceleration formula:
If a train moved at final velocity of  31 m/s and if it took  20 seconds to reach the final velocity from the standing point,than what is the acceleration  speed of the train?
a=vf-vi/t
a=31m/s -0 m/s/20 sec(divided by)
a= 1.55 m/s2

This is how  using Acceleration Formula we can solved problems.