Introduction on electric field lines:
Scientist Michael Faraday introduced the term electric field in 19 th century. Faraday was born in Newington Butts. Faraday’s perceptions that the pattern of electric field lines characterizing the electric field are invisible in reality. He explained that around a charge particle there a space in which another charge particle experience a force of attraction or repulsion, this region is called the electric field. He gave that electric field lines are vector in nature. I like to share this Electromagnetic Spectrum Wavelength Chart with you all through my article.
Definition of electric field lines:
Electric field lines are the curved or straight paths along which a unit positive charge tends to move in the electric field if it is free to do so. The direction of electric field lines gives the direction of motion of unit positive charge if it is free to do so. The electric field lines are imaginary but they give us the pictorial visualization of electric field. It is useful to draw a pattern of several lines, which extend between infinity and the source charge. These patterns of lines are electric field lines. Electric field lines are also called as electric flux lines. Please express your views of this topic Momentum Problems by commenting on blog.
Properties of electric field lines:
(i) If the electric field is due to isolated charge then the electric field line is always straight.
(ii) If the electric field is due to two or more charges then the electric field line are always straight.
(iii) The electric filed lines are directed away from positive charge and directed towards the negative charge.
(iv) A unit positive test charge tends to move along the electric field line if it is free to do so.
(v) Electric field lines are imaginary lines.
(vi) The tangent at any point to the electric field line gives the direction of electric field at that point.
(vii) Two electric field lines never cross each other.
(viii) If the electric field is stronger in any region then electric field lines are crowded, and the electric filed lines are spread out if the electric field is weaker in any region.
(ix)Electric field lines contracts lengthwise.
(x) Electric field lines cannot pass through the conductor.
(xi)Electric field lines can pass through the non-conductors and dielectrics.
Wednesday, February 20, 2013
Wednesday, February 13, 2013
Examples of Physical Properties
Introduction on Examples of Physical Properties:
Physical properties are the properties that can be observed without changing the identity of the substance. In other words,physical properties are the properties which describe a substance without changing its chemical composition. The general properties of matter such as density, colour and hardness and Melting point, boiling point, thermal conductivity, ductility, malleability are also the examples of Physical properties. I like to share this Specific Gravity Formula with you all through my article.
Some Examples of physical properties:
Density
It is a physical property of matter. Each compound and element has its unique density associated with it. In qualitative manner, density is defined as the measure of the relative "heaviness" of objects with a constant volume.
Melting point
Melting point is referred as the temperature at which the solid and liquid states of a pure substance can exist in equilibrium position.If the heat is applied to a solid, its temperature increases till it reaches the melting point. At this temperature, the additional heat converts the solid into liquid without a change in temperature.
Boiling point
The temperature at which a substance changes from liquid state to gaseous state is referred as boiling point.If the pressure of the surrounding gases is decreased, the boiling point of a liquid is lowered. Usually, water will boil at a lower temperature at the top of a mountain, since the atmospheric pressure on the water is less, than it will at sea level, where the pressure is greater. Please express your views of this topic Curie Law by commenting on blog.
Other Examples of Physical Properties
Thermal conductivity
Thermal conductivity is an intrinsic property of a material which has the ability to conduct heat. In general,heat transfer by conduction involves transfer of energy within a material without any motion of the material . In a solid medium, conduction takes place when a temperature gradient exists.
Ductility
Ductility is the property of metal which permits it to be reduced in cross sectional area without fracture. Usually ductile metals show considerable elongation eventually failing by necking, with consequent rapid increase in local stresses during the tensile test.
Physical properties are the properties that can be observed without changing the identity of the substance. In other words,physical properties are the properties which describe a substance without changing its chemical composition. The general properties of matter such as density, colour and hardness and Melting point, boiling point, thermal conductivity, ductility, malleability are also the examples of Physical properties. I like to share this Specific Gravity Formula with you all through my article.
Some Examples of physical properties:
Density
It is a physical property of matter. Each compound and element has its unique density associated with it. In qualitative manner, density is defined as the measure of the relative "heaviness" of objects with a constant volume.
Melting point
Melting point is referred as the temperature at which the solid and liquid states of a pure substance can exist in equilibrium position.If the heat is applied to a solid, its temperature increases till it reaches the melting point. At this temperature, the additional heat converts the solid into liquid without a change in temperature.
Boiling point
The temperature at which a substance changes from liquid state to gaseous state is referred as boiling point.If the pressure of the surrounding gases is decreased, the boiling point of a liquid is lowered. Usually, water will boil at a lower temperature at the top of a mountain, since the atmospheric pressure on the water is less, than it will at sea level, where the pressure is greater. Please express your views of this topic Curie Law by commenting on blog.
Other Examples of Physical Properties
Thermal conductivity
Thermal conductivity is an intrinsic property of a material which has the ability to conduct heat. In general,heat transfer by conduction involves transfer of energy within a material without any motion of the material . In a solid medium, conduction takes place when a temperature gradient exists.
Ductility
Ductility is the property of metal which permits it to be reduced in cross sectional area without fracture. Usually ductile metals show considerable elongation eventually failing by necking, with consequent rapid increase in local stresses during the tensile test.
Laws of Friction
Introduction:
Smooth surfaces are defined by the property that when they are in contact, the surfaces is always perpendicular to their common tangent plane. It can, however, be verified experimentally that no surfaces that are perfectly smooth and that whenever there is a tendency for two bodies which are in contact to move relative to each other, a force known as the force of friction tends to prevent the relative motion. The mathematical discussion of the force of friction that depends on certain assumptions which are embodied in the so called laws of friction and are found to be in close agreement with experiments. I like to share this Equation for Impulse with you all through my article.
Co-efficient friction:
Law 1
When two bodies are in the contact the direction of the forces of Friction on one of them at it's point of contact, is opposite to the direction in which the point of contact tends to move relative to the other.
Law 2
If the bodies are in the equilibrium, the force of Friction is just sufficient to prevent friction and may therefore be determined by applying the conditions of equilibrium of all the forces acting on the body.
Law 3
The ratio of the reducing friction to the Normal reaction between two surfaces depends on the substances of which the surfaces are composed and not on the magnitude of the Normal reaction. This ratio is usually denoted by .
Thus if the Normal reaction is R, the limiting friction is
For given materials polished to the same standard are found to be constant and independent of R. is called The Coefficient of friction. Please express your views of this topic Definition of Electromagnet by commenting on blog.
Basic Laws of friction:
Law 4
The amount of reducing friction is independent of the area of contact between the two surfaces and of the shape of the surfaces, provided that the Normal reaction is unaltered.
Law 5
When motion takes place in the direction of friction is opposite to the direction of relative motion and independent of velocity. The magnitude of the force of friction is a constant ratio to the Normal reaction but this ratio may be slightly less than when the body is just on the point of moving.
Smooth surfaces are defined by the property that when they are in contact, the surfaces is always perpendicular to their common tangent plane. It can, however, be verified experimentally that no surfaces that are perfectly smooth and that whenever there is a tendency for two bodies which are in contact to move relative to each other, a force known as the force of friction tends to prevent the relative motion. The mathematical discussion of the force of friction that depends on certain assumptions which are embodied in the so called laws of friction and are found to be in close agreement with experiments. I like to share this Equation for Impulse with you all through my article.
Co-efficient friction:
Law 1
When two bodies are in the contact the direction of the forces of Friction on one of them at it's point of contact, is opposite to the direction in which the point of contact tends to move relative to the other.
Law 2
If the bodies are in the equilibrium, the force of Friction is just sufficient to prevent friction and may therefore be determined by applying the conditions of equilibrium of all the forces acting on the body.
Law 3
The ratio of the reducing friction to the Normal reaction between two surfaces depends on the substances of which the surfaces are composed and not on the magnitude of the Normal reaction. This ratio is usually denoted by .
Thus if the Normal reaction is R, the limiting friction is
For given materials polished to the same standard are found to be constant and independent of R. is called The Coefficient of friction. Please express your views of this topic Definition of Electromagnet by commenting on blog.
Basic Laws of friction:
Law 4
The amount of reducing friction is independent of the area of contact between the two surfaces and of the shape of the surfaces, provided that the Normal reaction is unaltered.
Law 5
When motion takes place in the direction of friction is opposite to the direction of relative motion and independent of velocity. The magnitude of the force of friction is a constant ratio to the Normal reaction but this ratio may be slightly less than when the body is just on the point of moving.
Wednesday, February 6, 2013
Electrical Power Factor
Introduction to electrical power factor:
In a electrical circuit, the power consumed by a load is the product of the voltage across the load and the current passes through the load. But in AC circuits, the voltage and current are in different electrical angles if the load is inductive or capacitive. Is this topic Electric Field Lines hard for you? Watch out for my coming posts.
Therefore, at any point of time, the power consumed by the circuit is the product of the voltage component projected in line with the current direction and the actual current.
The voltage component projected in line with the current direction is the magnitude of the voltage times the cosine of the electrical angle between the voltage and current. The Cosine of this angle is defined as power factor of the load.
Description of Electrical Power Factor
Referring to the above vector diagram, the dot product of V and I (the energy and in turn the power is the dot product of vectors) gives the power P, which is given by,
P = VI cosФ
or P = VI (power factor of the load)
In case of inductive load, the current lags the voltage and in case of capacitive loads the current leads the voltage. This is the reason why the inductive loads are said to have lagging power factors and the capacitive loads are with leading power factors. In case of resistive loads, the angle between the voltage and current is 0. That means the power factor is 1(called as unity power factor). Understanding coulomb's law equation is always challenging for me but thanks to all math help websites to help me out.
Effect of Electrical Power Factor:
We have seen that the power consumed by an inductive load is VI times the power factor or VI times the Cosine of the angle of lag. Since the Cosine of any angle is always less than 1, the power consumed by an inductive load is always less than the power consumed by a resistive load drawing the same current.
Thus, the conductors carry a larger current for a given power in case of lagging power factor.
In a electrical circuit, the power consumed by a load is the product of the voltage across the load and the current passes through the load. But in AC circuits, the voltage and current are in different electrical angles if the load is inductive or capacitive. Is this topic Electric Field Lines hard for you? Watch out for my coming posts.
Therefore, at any point of time, the power consumed by the circuit is the product of the voltage component projected in line with the current direction and the actual current.
The voltage component projected in line with the current direction is the magnitude of the voltage times the cosine of the electrical angle between the voltage and current. The Cosine of this angle is defined as power factor of the load.
Description of Electrical Power Factor
Referring to the above vector diagram, the dot product of V and I (the energy and in turn the power is the dot product of vectors) gives the power P, which is given by,
P = VI cosФ
or P = VI (power factor of the load)
In case of inductive load, the current lags the voltage and in case of capacitive loads the current leads the voltage. This is the reason why the inductive loads are said to have lagging power factors and the capacitive loads are with leading power factors. In case of resistive loads, the angle between the voltage and current is 0. That means the power factor is 1(called as unity power factor). Understanding coulomb's law equation is always challenging for me but thanks to all math help websites to help me out.
Effect of Electrical Power Factor:
We have seen that the power consumed by an inductive load is VI times the power factor or VI times the Cosine of the angle of lag. Since the Cosine of any angle is always less than 1, the power consumed by an inductive load is always less than the power consumed by a resistive load drawing the same current.
Thus, the conductors carry a larger current for a given power in case of lagging power factor.
Elliptical Galaxies
Introduction to elliptical galaxies:
A galaxy is a massive, gravitationally bound system and it consists of stars and stellar remnants, an interstellar medium of gas and dust. An important but poorly understood component of galaxy is tentatively dubbed dark matter. Having problem with formula for celsius to kelvin keep reading my upcoming posts, i will try to help you.
The galaxies are divided into 3 broad classes based on their visual appearance according to Hubble’s scheme as:
Elliptical galaxies
Spiral galaxies
Lenticular galaxies
Elliptical galaxies are smooth, featureless light distributions and appear as ellipses in images.
Spiral galaxies consist of a flattened disk and stars form a two-armed spiral structure with a concentration of stars at the centre is known as the bulge. And it is similar in appearance to an elliptical galaxy.
Lenticular galaxies (designated S0) consist of a bright central bulge which is surrounded by an extended, disk-like structure. These disks have no visible spiral structure and are not actively forming stars in any significant quantity.
Characteristics of Elliptical Galaxies:
An elliptical galaxy is a galaxy with an approximately ellipsoidal shape and a smooth, nearly featureless brightness profile. Elliptical galaxies do not rotate as a whole since they have little or no global angular momentum. The stars orbit the centers of these galaxies, but the orbits are statistically oriented so that only little net orbital angular momentum sums up. An elliptical galaxy contain very little or no interstellar matter, and consist of old population II stars only which appear like luminous bulges of spirals, without a disk component. In elliptical galaxies, the motion of stars is predominantly radial, where as the disks of spiral galaxies, are dominated by rotation. A very little interstellar matter (neither gas nor dust) is observed in elliptical galaxies and it results in low rates of star formation with a few open star clusters and few young stars. Also, elliptical galaxies are dominated by old stellar populations, giving them red colours. Please express your views of this topic Signs of Radiation Poisoning by commenting on blog.
Conclusion to Elliptical Galaxies:
By the Hubble classification system, elliptical galaxies ranges from E0, being nearly spherical, up to E7, which is highly elongated on the basis of their ellipticity. It is believed that many elliptical galaxies are formed due to the interaction of galaxies, resulting in a collision and merger. They grow to enormous sizes and the giant elliptical galaxies are often found near the core of large galaxy clusters. The largest galaxies are known as giant ellipticals. It has been discovered that for some ellipticals, small disk components, and they are one end of a common scheme of galaxy forms which includes the disk galaxies.
A galaxy is a massive, gravitationally bound system and it consists of stars and stellar remnants, an interstellar medium of gas and dust. An important but poorly understood component of galaxy is tentatively dubbed dark matter. Having problem with formula for celsius to kelvin keep reading my upcoming posts, i will try to help you.
The galaxies are divided into 3 broad classes based on their visual appearance according to Hubble’s scheme as:
Elliptical galaxies
Spiral galaxies
Lenticular galaxies
Elliptical galaxies are smooth, featureless light distributions and appear as ellipses in images.
Spiral galaxies consist of a flattened disk and stars form a two-armed spiral structure with a concentration of stars at the centre is known as the bulge. And it is similar in appearance to an elliptical galaxy.
Lenticular galaxies (designated S0) consist of a bright central bulge which is surrounded by an extended, disk-like structure. These disks have no visible spiral structure and are not actively forming stars in any significant quantity.
Characteristics of Elliptical Galaxies:
An elliptical galaxy is a galaxy with an approximately ellipsoidal shape and a smooth, nearly featureless brightness profile. Elliptical galaxies do not rotate as a whole since they have little or no global angular momentum. The stars orbit the centers of these galaxies, but the orbits are statistically oriented so that only little net orbital angular momentum sums up. An elliptical galaxy contain very little or no interstellar matter, and consist of old population II stars only which appear like luminous bulges of spirals, without a disk component. In elliptical galaxies, the motion of stars is predominantly radial, where as the disks of spiral galaxies, are dominated by rotation. A very little interstellar matter (neither gas nor dust) is observed in elliptical galaxies and it results in low rates of star formation with a few open star clusters and few young stars. Also, elliptical galaxies are dominated by old stellar populations, giving them red colours. Please express your views of this topic Signs of Radiation Poisoning by commenting on blog.
Conclusion to Elliptical Galaxies:
By the Hubble classification system, elliptical galaxies ranges from E0, being nearly spherical, up to E7, which is highly elongated on the basis of their ellipticity. It is believed that many elliptical galaxies are formed due to the interaction of galaxies, resulting in a collision and merger. They grow to enormous sizes and the giant elliptical galaxies are often found near the core of large galaxy clusters. The largest galaxies are known as giant ellipticals. It has been discovered that for some ellipticals, small disk components, and they are one end of a common scheme of galaxy forms which includes the disk galaxies.
Thursday, January 24, 2013
Law of Motion Activities
Introduction to law of motion activities:
In the opening of 17th century, a German scientist Johannes Kepler considered the motion of planets also give the three law of motion behavior. They are law of orbit, law of region, and law of time. Motion of a plane through the air is capable to provide information as well illustrate through physical principles exposed more than 300 years before Sir Isaac Newton. Newton establish -ed the three laws of motion.Understanding Elastic Potential Energy Equation is always challenging for me but thanks to all math help websites to help me out.
Kepler's Laws of Motion Activities
1) Law of orbits:
Each planet turns approximately when the sun surrounded by elliptical orbit and during the sun at one center of the ellipse.
2) Law of areas:
The speed of planet turning about the sun is not identical except modify such that the line combination tof he planet toward sun sweep up equivalent areas within equal times.
Area swept away through the line combination of the planet, per second near the sun is called the areal velocity. Please express your views of this topic DC Permanent Magnet Motor by commenting on blog.
Consequently, the second law can well be spoken as,
Areal velocity of the planet about the sun forever remains stable.
3) Law of periods:
The square of period of uprising of whichever planet on the sun is straight relative to the cube of its indicating distance as of the sun. This is called the law of periods.
Condition T be the period of a planet also r is the mean distance of planet as of the sun, after that
T2=K r3
Wherever, k is a constant.
If T1 and T2 be the period of two planets also r1 with r2 be also individual mean distance as of the sun, after that
T12/T22=r13/r23
Since, this law goes after to bigger expanse of the planet as of the sun, bigger determination be the period of revolution.
Newton's third Law of Motion Activities
Third law of motion activities:
According to Newton’s third law of activities, we identify to, conditions an object apply a force on new object, and then the second objects in addition apply an equal also opposite force lying on the first object.
Newton’s third law of motion is associated toward the gravitational force within addition.
We also recognize when a force performs lying on a body, it creates acceleration within it. Every bodies apply gravitational force lying on each other. It gives way to the gravitational forces of attraction to create acceleration within the related bodies equally .
In the opening of 17th century, a German scientist Johannes Kepler considered the motion of planets also give the three law of motion behavior. They are law of orbit, law of region, and law of time. Motion of a plane through the air is capable to provide information as well illustrate through physical principles exposed more than 300 years before Sir Isaac Newton. Newton establish -ed the three laws of motion.Understanding Elastic Potential Energy Equation is always challenging for me but thanks to all math help websites to help me out.
Kepler's Laws of Motion Activities
1) Law of orbits:
Each planet turns approximately when the sun surrounded by elliptical orbit and during the sun at one center of the ellipse.
2) Law of areas:
The speed of planet turning about the sun is not identical except modify such that the line combination tof he planet toward sun sweep up equivalent areas within equal times.
Area swept away through the line combination of the planet, per second near the sun is called the areal velocity. Please express your views of this topic DC Permanent Magnet Motor by commenting on blog.
Consequently, the second law can well be spoken as,
Areal velocity of the planet about the sun forever remains stable.
3) Law of periods:
The square of period of uprising of whichever planet on the sun is straight relative to the cube of its indicating distance as of the sun. This is called the law of periods.
Condition T be the period of a planet also r is the mean distance of planet as of the sun, after that
T2=K r3
Wherever, k is a constant.
If T1 and T2 be the period of two planets also r1 with r2 be also individual mean distance as of the sun, after that
T12/T22=r13/r23
Since, this law goes after to bigger expanse of the planet as of the sun, bigger determination be the period of revolution.
Newton's third Law of Motion Activities
Third law of motion activities:
According to Newton’s third law of activities, we identify to, conditions an object apply a force on new object, and then the second objects in addition apply an equal also opposite force lying on the first object.
Newton’s third law of motion is associated toward the gravitational force within addition.
We also recognize when a force performs lying on a body, it creates acceleration within it. Every bodies apply gravitational force lying on each other. It gives way to the gravitational forces of attraction to create acceleration within the related bodies equally .
Importance of Physical Science
Introduction to Importance of Physical Science:
Physics has great importance in our daily life. It relates to every science because it is the basis of the universe.
Physics explains the measure of the different physical quantities that play a vital role in our daily life, such as volume, weight, mass, distance, speed etc. By these standard units of measurement we can organize our daily activities and this has united human activities all over the world. Having problem with elastic collision equation keep reading my upcoming posts, i will try to help you.
Physical Science in our World
Physics also explains the several forms of energy such as potential energy, nuclear energy, kinetic energy, wind energy etc.
Physics help us understand the electrical signals, which carry the sensation in our body, to our mind, by which we are able to see, hear or to feel the objects. The metals that we use for different purposes are based on physics. We generally use water to cool or as a heating liquid due to its high specific heat of water.
By understanding the laws of physics and studying them, man has been able to harness the various elements of nature like water, fire, oceans, wind air etc. and use them for our benefit, thus enhancing human life style over the generations. I have recently faced lot of problem while learning Magnetic Dipole Moment Equation, But thank to online resources of math which helped me to learn myself easily on net.
The most important form of energy, electrical energy is due to the physics.
Water, wind and air are used to make electrical energy which keeps the modern world running.
Inventions of Physical Science
Physics gave the world important inventions like cars, bulbs, satellites, bikes, watches, LED's, cell phones, TV, computer, planes, VCD players, microwave ovens, cooking gas stoves, phones.
Some of the miracles of physics are: electric motor alternating current, hydroelectric power, radar, modern rocketry, radio, DNA structure, X-rays, lasers, transistors, light-emitting diodes, magnetic resonance imaging, oscilloscopes, television, the World Wide Web and holography.
Conclusion of the Importance of Physical Science
Science, with physics as its base, can solve many of the crises facing the world, such as global warming, waning energy, overpopulation, natural disasters, and the slow poisoning of our planet.
Physics has great importance in our daily life. It relates to every science because it is the basis of the universe.
Physics explains the measure of the different physical quantities that play a vital role in our daily life, such as volume, weight, mass, distance, speed etc. By these standard units of measurement we can organize our daily activities and this has united human activities all over the world. Having problem with elastic collision equation keep reading my upcoming posts, i will try to help you.
Physical Science in our World
Physics also explains the several forms of energy such as potential energy, nuclear energy, kinetic energy, wind energy etc.
Physics help us understand the electrical signals, which carry the sensation in our body, to our mind, by which we are able to see, hear or to feel the objects. The metals that we use for different purposes are based on physics. We generally use water to cool or as a heating liquid due to its high specific heat of water.
By understanding the laws of physics and studying them, man has been able to harness the various elements of nature like water, fire, oceans, wind air etc. and use them for our benefit, thus enhancing human life style over the generations. I have recently faced lot of problem while learning Magnetic Dipole Moment Equation, But thank to online resources of math which helped me to learn myself easily on net.
The most important form of energy, electrical energy is due to the physics.
Water, wind and air are used to make electrical energy which keeps the modern world running.
Inventions of Physical Science
Physics gave the world important inventions like cars, bulbs, satellites, bikes, watches, LED's, cell phones, TV, computer, planes, VCD players, microwave ovens, cooking gas stoves, phones.
Some of the miracles of physics are: electric motor alternating current, hydroelectric power, radar, modern rocketry, radio, DNA structure, X-rays, lasers, transistors, light-emitting diodes, magnetic resonance imaging, oscilloscopes, television, the World Wide Web and holography.
Conclusion of the Importance of Physical Science
Science, with physics as its base, can solve many of the crises facing the world, such as global warming, waning energy, overpopulation, natural disasters, and the slow poisoning of our planet.
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