Physics Questions Answers, Introduction to Physics, Fundamentals, Topics #question #answerer


#physics answers

#

Physics

The Sun is the star at the centre of the solar system. It is mainly composed of hydrogen and helium. There are various solar missions launched by observatories to study high resolution and close-up view of Sun and its inner heliosphere (the innermost region of our Solar System) to predict and to better understand the intractable or restive behaviour of the star on which our lives depend.

The Complete Study Material of General Science i.e. Physics, Chemistry and Biology is given in a compiled form that will be very helpful for the students of 6th to 12th class, undergraduates and those who are preparing for competitive exams familiar with the diversity of the subject and make them understand the concepts.

The change in temperature of a body causes expansion or contraction of that body. Most of the substances expand on heating and contract on cooling. This is called thermal expansion. It is interesting to know why the level of mercury rises with temperature, wires attached to electric poles contract or expand with change in season, etc. This all is due to thermal expansion.

Some liquids show resistance to motion and it is like internal friction. This is called viscosity. Liquids acquire a free surface when poured in a container. The additional energy that these surfaces have is called surface tension.

Sound is a form of energy. It is that form of energy which makes us hear. Sound wave is a vibratory disturbance in a medium which carries energy from one point to another without there being a direct contact between the two points. According to Doppler Effect the frequency of sound wave changes with motion, either of the source or of the observer. The reflection of sound wave is called echo. It varies in different mediums.

Refraction is the change in direction of light when it passes from one medium to another. The working of a lens is based on the refraction of light when they pass through it. Lens is a piece of transparent glass bound by two spherical surfaces and is used to magnify objects. They are of two types convex and concave. The image produced by convex lens is enlarged and the image produced by concave lens is diminished.

Refraction is the bending of light when it goes from one medium to another so, when a ray of light passes through a glass prism, refraction of light occurs both, when it enters the prism as well as when it leaves the prism. Since the refracting surfaces are not parallel, therefore, the emergent ray and incident ray are not parallel to one another. In this case the ray of light is deviated on passing through the prism.

The Human eye works on the refraction of light through a natural convex lens made up of transparent living material and enables us to see things around us. Also, the ability to see is called vision, eyesight or drishti. Sometimes a person cannot able to see distant or nearby objects clearly and have a defect of vision which can be fixed by wearing spectacles.

The Universe is everything we can touch, feel, sense, measure or detect. It includes living things, planets, stars, galaxies, dust clouds, light, and even time. All the existing matter and space as a whole is considered as universe. The universe is believed to be at least 10 billion light years in diameter and contains a vast number of galaxies each containing millions or billions of stars.

The Solar System consists of the eight planets that orbit our Sun and other celestial bodies such as moons, comets, asteroids, minor planets, and dust and gas. Sun is considered as the centre of the solar system and all the planets revolve around the sun. The eight planets in the solar system in the increasing order of their distance from the Sun are Mercury, Venus, Earth and Mars, Jupiter, Saturn, Uranus and Neptune.

Resistance is the hindrance to the flow of electric charge. The obstruction posed in the way of current carrying particles by fixed particles creates resistance in an electric circuit. The measurement of the electric current in an electric circuit therefore, depends on two factors primarily i.e. Potential Difference across the ends of the conductor and Resistance of the conductor. The relationship between current and potential difference is also explained by Ohm s Law.

Refraction of light takes place when light travels from one medium to another. It takes place at the boundary between the two mediums. Also, we know that speed of light is different in different mediums. So, it occurs due to the change in speed of light on going from one medium to another.

A spherical mirror is that mirror whose reflecting surface is the part of a hollow sphere of glass. Spherical mirrors are of two types: concave mirrors and convex mirrors. In a concave mirror reflection of light takes place in the bent in surface or concave surface. In a convex mirror the reflection of light takes place at the bulging-out surface or convex surface.

Light is a form of energy which enables us to see objects and the straight line along which it travels is called ray of light. Reflection of Light is the process of sending back the light rays which falls on the surface of an object. The image formed due to reflection of an object on a plane mirror is at different places.

A current carrying conductor creates a magnetic field around it, which can be comprehended by using magnetic lines of force or magnetic field lines. Magnetic field in a current carrying straight conductor is in the form of concentric circles around it. The direction of magnetic field; in relation to direction of electric current through a straight conductor can be depicted by using the Right Hand Thumb Rule which is also known as Maxwell s Corkscrew Rule.

A wave is a phenomenon whereby energy is moved without the transference of any material. X-rays, ultraviolet rays, light and radio waves all travel at the same speed through a vacuum.

When a red hot piece of iron cools down, it transfers energy to its surroundings in three possible ways: conduction, convection or radiation.


Computer Fundamentals – Computer Science Questions and Answers #question #and #answer #jokes


#computer questions answered free

#

Computer Science – Computer Fundamentals

Why Computer Science Computer Fundamentals?

In this section you can learn and practice Computer Science Questions based on “Computer Fundamentals” and improve your skills in order to face the interview, competitive examination and various entrance test (CAT, GATE, GRE, MAT, Bank Exam, Railway Exam etc.) with full confidence.

Where can I get Computer Science Computer Fundamentals questions and answers with explanation?

IndiaBIX provides you lots of fully solved Computer Science (Computer Fundamentals) questions and answers with Explanation. Solved examples with detailed answer description, explanation are given and it would be easy to understand. All students, freshers can download Computer Science Computer Fundamentals quiz questions with answers as PDF files and eBooks.

Where can I get Computer Science Computer Fundamentals Interview Questions and Answers (objective type, multiple choice)?

Here you can find objective type Computer Science Computer Fundamentals questions and answers for interview and entrance examination. Multiple choice and true or false type questions are also provided.

How to solve Computer Science Computer Fundamentals problems?

You can easily solve all kind of Computer Science questions based on Computer Fundamentals by practicing the objective type exercises given below, also get shortcut methods to solve Computer Science Computer Fundamentals problems.


Physics Questions Answers, Introduction to Physics, Fundamentals, Topics #free #answers


#physics answers

#

Physics

The Sun is the star at the centre of the solar system. It is mainly composed of hydrogen and helium. There are various solar missions launched by observatories to study high resolution and close-up view of Sun and its inner heliosphere (the innermost region of our Solar System) to predict and to better understand the intractable or restive behaviour of the star on which our lives depend.

The Complete Study Material of General Science i.e. Physics, Chemistry and Biology is given in a compiled form that will be very helpful for the students of 6th to 12th class, undergraduates and those who are preparing for competitive exams familiar with the diversity of the subject and make them understand the concepts.

The change in temperature of a body causes expansion or contraction of that body. Most of the substances expand on heating and contract on cooling. This is called thermal expansion. It is interesting to know why the level of mercury rises with temperature, wires attached to electric poles contract or expand with change in season, etc. This all is due to thermal expansion.

Some liquids show resistance to motion and it is like internal friction. This is called viscosity. Liquids acquire a free surface when poured in a container. The additional energy that these surfaces have is called surface tension.

Sound is a form of energy. It is that form of energy which makes us hear. Sound wave is a vibratory disturbance in a medium which carries energy from one point to another without there being a direct contact between the two points. According to Doppler Effect the frequency of sound wave changes with motion, either of the source or of the observer. The reflection of sound wave is called echo. It varies in different mediums.

Refraction is the change in direction of light when it passes from one medium to another. The working of a lens is based on the refraction of light when they pass through it. Lens is a piece of transparent glass bound by two spherical surfaces and is used to magnify objects. They are of two types convex and concave. The image produced by convex lens is enlarged and the image produced by concave lens is diminished.

Refraction is the bending of light when it goes from one medium to another so, when a ray of light passes through a glass prism, refraction of light occurs both, when it enters the prism as well as when it leaves the prism. Since the refracting surfaces are not parallel, therefore, the emergent ray and incident ray are not parallel to one another. In this case the ray of light is deviated on passing through the prism.

The Human eye works on the refraction of light through a natural convex lens made up of transparent living material and enables us to see things around us. Also, the ability to see is called vision, eyesight or drishti. Sometimes a person cannot able to see distant or nearby objects clearly and have a defect of vision which can be fixed by wearing spectacles.

The Universe is everything we can touch, feel, sense, measure or detect. It includes living things, planets, stars, galaxies, dust clouds, light, and even time. All the existing matter and space as a whole is considered as universe. The universe is believed to be at least 10 billion light years in diameter and contains a vast number of galaxies each containing millions or billions of stars.

The Solar System consists of the eight planets that orbit our Sun and other celestial bodies such as moons, comets, asteroids, minor planets, and dust and gas. Sun is considered as the centre of the solar system and all the planets revolve around the sun. The eight planets in the solar system in the increasing order of their distance from the Sun are Mercury, Venus, Earth and Mars, Jupiter, Saturn, Uranus and Neptune.

Resistance is the hindrance to the flow of electric charge. The obstruction posed in the way of current carrying particles by fixed particles creates resistance in an electric circuit. The measurement of the electric current in an electric circuit therefore, depends on two factors primarily i.e. Potential Difference across the ends of the conductor and Resistance of the conductor. The relationship between current and potential difference is also explained by Ohm s Law.

Refraction of light takes place when light travels from one medium to another. It takes place at the boundary between the two mediums. Also, we know that speed of light is different in different mediums. So, it occurs due to the change in speed of light on going from one medium to another.

A spherical mirror is that mirror whose reflecting surface is the part of a hollow sphere of glass. Spherical mirrors are of two types: concave mirrors and convex mirrors. In a concave mirror reflection of light takes place in the bent in surface or concave surface. In a convex mirror the reflection of light takes place at the bulging-out surface or convex surface.

Light is a form of energy which enables us to see objects and the straight line along which it travels is called ray of light. Reflection of Light is the process of sending back the light rays which falls on the surface of an object. The image formed due to reflection of an object on a plane mirror is at different places.

A current carrying conductor creates a magnetic field around it, which can be comprehended by using magnetic lines of force or magnetic field lines. Magnetic field in a current carrying straight conductor is in the form of concentric circles around it. The direction of magnetic field; in relation to direction of electric current through a straight conductor can be depicted by using the Right Hand Thumb Rule which is also known as Maxwell s Corkscrew Rule.

A wave is a phenomenon whereby energy is moved without the transference of any material. X-rays, ultraviolet rays, light and radio waves all travel at the same speed through a vacuum.

When a red hot piece of iron cools down, it transfers energy to its surroundings in three possible ways: conduction, convection or radiation.


Computer Fundamentals – Computer Science Questions and Answers #my #maths #answer #sheet


#computer questions answered free

#

Computer Science – Computer Fundamentals

Why Computer Science Computer Fundamentals?

In this section you can learn and practice Computer Science Questions based on “Computer Fundamentals” and improve your skills in order to face the interview, competitive examination and various entrance test (CAT, GATE, GRE, MAT, Bank Exam, Railway Exam etc.) with full confidence.

Where can I get Computer Science Computer Fundamentals questions and answers with explanation?

IndiaBIX provides you lots of fully solved Computer Science (Computer Fundamentals) questions and answers with Explanation. Solved examples with detailed answer description, explanation are given and it would be easy to understand. All students, freshers can download Computer Science Computer Fundamentals quiz questions with answers as PDF files and eBooks.

Where can I get Computer Science Computer Fundamentals Interview Questions and Answers (objective type, multiple choice)?

Here you can find objective type Computer Science Computer Fundamentals questions and answers for interview and entrance examination. Multiple choice and true or false type questions are also provided.

How to solve Computer Science Computer Fundamentals problems?

You can easily solve all kind of Computer Science questions based on Computer Fundamentals by practicing the objective type exercises given below, also get shortcut methods to solve Computer Science Computer Fundamentals problems.


Should income investors buy State Auto Financial Corporation (STFC) before its ex-dividend


#

Should income investors buy State Auto Financial Corporation (STFC) before its ex-dividend date?

Important news for shareholders and potential investors in State Auto Financial (NASDAQ:STFC ). The dividend payment of $0.1 will be distributed into shareholder s accounts on Fri 30 Jun 2017 but the stock will begin trading ex-dividend already on the Fri 09 Jun 2017. So if you want to cash in on that dividend and are not a shareholder yet, you have only few days left. But is this actually an interesting opportunity for dividend investors? Today I m going to investigate the latest data and dive into some metrics you shouldn t overlook.

What is the ex-dividend date?
If you purchase a stock on or after its ex-dividend date, you will not receive the next dividend payment. Instead, the seller gets the dividend. If you purchase before the ex-dividend date, you get the dividend.

How does State Auto Financial (STFC) fare as a dividend stock?

Payout ratio is a measure of how much of a company s earnings are paid out as dividends to its shareholders. So a payout ratio of 50% would mean for every $1 earnt they pay 50c as a dividend. Likewise a payout ratio of 150% means the company is paying out more as a dividend than it earns, usually this is paid out of debt or cash.

The current payout ratio for the stock is 46%, meaning the dividend is sufficiently covered by earnings. In 3 years time the analysts are predicting dividends per share to be around $0.413 and EPS to increase to $1.48. This means they should be able to continue the dividend payout with an estimated future payout ratio of 28%.

In addition to the payout ratio, the payout consistency is a significant consideration when assessing the quality of STFC s dividend.

If the dividend is a key criteria in your investment consideration, then you need to make sure the dividend stock you re eyeing out is reliable. Dividend payments from State Auto Financial have dropped in the past 10 years, and these drops were not gradual, with some years experiencing drops of over 25%.This means any dividend hunters should probably be avoiding the stock in the short term.

STFC s yield sits at 1.61%, which is high for a insurance stock but still below the low risk savings rate.

My Conclusion

For a dividend investor State Auto Financial is probably not the best pick.But if you are not exclusively a dividend investor, STFC could still be an interesting investment opportunity.

The easiest way to discover new investment ideas

Save hours of research when discovering your next investment with Simply Wall St. Looking for companies potentially undervalued based on their future cash flows? Or maybe you’re looking for sustainable dividend payers or high growth potential stocks. Customise your search to easily find new investment opportunities that match your investment goals. And the best thing about it? It’s FREE. Click here to learn more .

Share this article:

Raj lives in Bangalore, India. He is a software engineer by trade and spends his days developing websites for clients. But from a very young age, he’s had a keen eye for the share market.

Interested in Tailored Brands Inc (TLRD)’s upcoming $0.18 dividend? You have 3 days left

Read this before buying Legg Mason Inc (LM) for its upcoming $0.28 dividend

Popular Posts

About Us

Become a better investor Simply Wall St is an award winning start-up aiming to replace human stockbrokers by providing you with high quality financial data and analysis presented in a beautiful visual way everybody can understand, at a fraction of the cost (try our FREE plan).

The opinions and content on this site are those of the contributing authors and not Simply Wall St. Apply to become a contributor here.

The information should not be considered advice and it does not take into account your investment objectives, financial situation or needs. You should seek independent financial and legal advice to consider if an investment is appropriate for your personal circumstances.


Physics Questions Answers, Introduction to Physics, Fundamentals, Topics #call #answering


#physics answers

#

Physics

The Sun is the star at the centre of the solar system. It is mainly composed of hydrogen and helium. There are various solar missions launched by observatories to study high resolution and close-up view of Sun and its inner heliosphere (the innermost region of our Solar System) to predict and to better understand the intractable or restive behaviour of the star on which our lives depend.

The Complete Study Material of General Science i.e. Physics, Chemistry and Biology is given in a compiled form that will be very helpful for the students of 6th to 12th class, undergraduates and those who are preparing for competitive exams familiar with the diversity of the subject and make them understand the concepts.

The change in temperature of a body causes expansion or contraction of that body. Most of the substances expand on heating and contract on cooling. This is called thermal expansion. It is interesting to know why the level of mercury rises with temperature, wires attached to electric poles contract or expand with change in season, etc. This all is due to thermal expansion.

Some liquids show resistance to motion and it is like internal friction. This is called viscosity. Liquids acquire a free surface when poured in a container. The additional energy that these surfaces have is called surface tension.

Sound is a form of energy. It is that form of energy which makes us hear. Sound wave is a vibratory disturbance in a medium which carries energy from one point to another without there being a direct contact between the two points. According to Doppler Effect the frequency of sound wave changes with motion, either of the source or of the observer. The reflection of sound wave is called echo. It varies in different mediums.

Refraction is the change in direction of light when it passes from one medium to another. The working of a lens is based on the refraction of light when they pass through it. Lens is a piece of transparent glass bound by two spherical surfaces and is used to magnify objects. They are of two types convex and concave. The image produced by convex lens is enlarged and the image produced by concave lens is diminished.

Refraction is the bending of light when it goes from one medium to another so, when a ray of light passes through a glass prism, refraction of light occurs both, when it enters the prism as well as when it leaves the prism. Since the refracting surfaces are not parallel, therefore, the emergent ray and incident ray are not parallel to one another. In this case the ray of light is deviated on passing through the prism.

The Human eye works on the refraction of light through a natural convex lens made up of transparent living material and enables us to see things around us. Also, the ability to see is called vision, eyesight or drishti. Sometimes a person cannot able to see distant or nearby objects clearly and have a defect of vision which can be fixed by wearing spectacles.

The Universe is everything we can touch, feel, sense, measure or detect. It includes living things, planets, stars, galaxies, dust clouds, light, and even time. All the existing matter and space as a whole is considered as universe. The universe is believed to be at least 10 billion light years in diameter and contains a vast number of galaxies each containing millions or billions of stars.

The Solar System consists of the eight planets that orbit our Sun and other celestial bodies such as moons, comets, asteroids, minor planets, and dust and gas. Sun is considered as the centre of the solar system and all the planets revolve around the sun. The eight planets in the solar system in the increasing order of their distance from the Sun are Mercury, Venus, Earth and Mars, Jupiter, Saturn, Uranus and Neptune.

Resistance is the hindrance to the flow of electric charge. The obstruction posed in the way of current carrying particles by fixed particles creates resistance in an electric circuit. The measurement of the electric current in an electric circuit therefore, depends on two factors primarily i.e. Potential Difference across the ends of the conductor and Resistance of the conductor. The relationship between current and potential difference is also explained by Ohm s Law.

Refraction of light takes place when light travels from one medium to another. It takes place at the boundary between the two mediums. Also, we know that speed of light is different in different mediums. So, it occurs due to the change in speed of light on going from one medium to another.

A spherical mirror is that mirror whose reflecting surface is the part of a hollow sphere of glass. Spherical mirrors are of two types: concave mirrors and convex mirrors. In a concave mirror reflection of light takes place in the bent in surface or concave surface. In a convex mirror the reflection of light takes place at the bulging-out surface or convex surface.

Light is a form of energy which enables us to see objects and the straight line along which it travels is called ray of light. Reflection of Light is the process of sending back the light rays which falls on the surface of an object. The image formed due to reflection of an object on a plane mirror is at different places.

A current carrying conductor creates a magnetic field around it, which can be comprehended by using magnetic lines of force or magnetic field lines. Magnetic field in a current carrying straight conductor is in the form of concentric circles around it. The direction of magnetic field; in relation to direction of electric current through a straight conductor can be depicted by using the Right Hand Thumb Rule which is also known as Maxwell s Corkscrew Rule.

A wave is a phenomenon whereby energy is moved without the transference of any material. X-rays, ultraviolet rays, light and radio waves all travel at the same speed through a vacuum.

When a red hot piece of iron cools down, it transfers energy to its surroundings in three possible ways: conduction, convection or radiation.


Computer Fundamentals – Computer Science Questions and Answers #answers #to #physics #problems


#computer questions answered free

#

Computer Science – Computer Fundamentals

Why Computer Science Computer Fundamentals?

In this section you can learn and practice Computer Science Questions based on “Computer Fundamentals” and improve your skills in order to face the interview, competitive examination and various entrance test (CAT, GATE, GRE, MAT, Bank Exam, Railway Exam etc.) with full confidence.

Where can I get Computer Science Computer Fundamentals questions and answers with explanation?

IndiaBIX provides you lots of fully solved Computer Science (Computer Fundamentals) questions and answers with Explanation. Solved examples with detailed answer description, explanation are given and it would be easy to understand. All students, freshers can download Computer Science Computer Fundamentals quiz questions with answers as PDF files and eBooks.

Where can I get Computer Science Computer Fundamentals Interview Questions and Answers (objective type, multiple choice)?

Here you can find objective type Computer Science Computer Fundamentals questions and answers for interview and entrance examination. Multiple choice and true or false type questions are also provided.

How to solve Computer Science Computer Fundamentals problems?

You can easily solve all kind of Computer Science questions based on Computer Fundamentals by practicing the objective type exercises given below, also get shortcut methods to solve Computer Science Computer Fundamentals problems.


Physics Questions Answers, Introduction to Physics, Fundamentals, Topics #the #definition #of #antonyms


#physics answers

#

Physics

The Sun is the star at the centre of the solar system. It is mainly composed of hydrogen and helium. There are various solar missions launched by observatories to study high resolution and close-up view of Sun and its inner heliosphere (the innermost region of our Solar System) to predict and to better understand the intractable or restive behaviour of the star on which our lives depend.

The Complete Study Material of General Science i.e. Physics, Chemistry and Biology is given in a compiled form that will be very helpful for the students of 6th to 12th class, undergraduates and those who are preparing for competitive exams familiar with the diversity of the subject and make them understand the concepts.

The change in temperature of a body causes expansion or contraction of that body. Most of the substances expand on heating and contract on cooling. This is called thermal expansion. It is interesting to know why the level of mercury rises with temperature, wires attached to electric poles contract or expand with change in season, etc. This all is due to thermal expansion.

Some liquids show resistance to motion and it is like internal friction. This is called viscosity. Liquids acquire a free surface when poured in a container. The additional energy that these surfaces have is called surface tension.

Sound is a form of energy. It is that form of energy which makes us hear. Sound wave is a vibratory disturbance in a medium which carries energy from one point to another without there being a direct contact between the two points. According to Doppler Effect the frequency of sound wave changes with motion, either of the source or of the observer. The reflection of sound wave is called echo. It varies in different mediums.

Refraction is the change in direction of light when it passes from one medium to another. The working of a lens is based on the refraction of light when they pass through it. Lens is a piece of transparent glass bound by two spherical surfaces and is used to magnify objects. They are of two types convex and concave. The image produced by convex lens is enlarged and the image produced by concave lens is diminished.

Refraction is the bending of light when it goes from one medium to another so, when a ray of light passes through a glass prism, refraction of light occurs both, when it enters the prism as well as when it leaves the prism. Since the refracting surfaces are not parallel, therefore, the emergent ray and incident ray are not parallel to one another. In this case the ray of light is deviated on passing through the prism.

The Human eye works on the refraction of light through a natural convex lens made up of transparent living material and enables us to see things around us. Also, the ability to see is called vision, eyesight or drishti. Sometimes a person cannot able to see distant or nearby objects clearly and have a defect of vision which can be fixed by wearing spectacles.

The Universe is everything we can touch, feel, sense, measure or detect. It includes living things, planets, stars, galaxies, dust clouds, light, and even time. All the existing matter and space as a whole is considered as universe. The universe is believed to be at least 10 billion light years in diameter and contains a vast number of galaxies each containing millions or billions of stars.

The Solar System consists of the eight planets that orbit our Sun and other celestial bodies such as moons, comets, asteroids, minor planets, and dust and gas. Sun is considered as the centre of the solar system and all the planets revolve around the sun. The eight planets in the solar system in the increasing order of their distance from the Sun are Mercury, Venus, Earth and Mars, Jupiter, Saturn, Uranus and Neptune.

Resistance is the hindrance to the flow of electric charge. The obstruction posed in the way of current carrying particles by fixed particles creates resistance in an electric circuit. The measurement of the electric current in an electric circuit therefore, depends on two factors primarily i.e. Potential Difference across the ends of the conductor and Resistance of the conductor. The relationship between current and potential difference is also explained by Ohm s Law.

Refraction of light takes place when light travels from one medium to another. It takes place at the boundary between the two mediums. Also, we know that speed of light is different in different mediums. So, it occurs due to the change in speed of light on going from one medium to another.

A spherical mirror is that mirror whose reflecting surface is the part of a hollow sphere of glass. Spherical mirrors are of two types: concave mirrors and convex mirrors. In a concave mirror reflection of light takes place in the bent in surface or concave surface. In a convex mirror the reflection of light takes place at the bulging-out surface or convex surface.

Light is a form of energy which enables us to see objects and the straight line along which it travels is called ray of light. Reflection of Light is the process of sending back the light rays which falls on the surface of an object. The image formed due to reflection of an object on a plane mirror is at different places.

A current carrying conductor creates a magnetic field around it, which can be comprehended by using magnetic lines of force or magnetic field lines. Magnetic field in a current carrying straight conductor is in the form of concentric circles around it. The direction of magnetic field; in relation to direction of electric current through a straight conductor can be depicted by using the Right Hand Thumb Rule which is also known as Maxwell s Corkscrew Rule.

A wave is a phenomenon whereby energy is moved without the transference of any material. X-rays, ultraviolet rays, light and radio waves all travel at the same speed through a vacuum.

When a red hot piece of iron cools down, it transfers energy to its surroundings in three possible ways: conduction, convection or radiation.


Physics Questions Answers, Introduction to Physics, Fundamentals, Topics #word #dictionary #thesaurus


#physics answers

#

Physics

The Sun is the star at the centre of the solar system. It is mainly composed of hydrogen and helium. There are various solar missions launched by observatories to study high resolution and close-up view of Sun and its inner heliosphere (the innermost region of our Solar System) to predict and to better understand the intractable or restive behaviour of the star on which our lives depend.

The Complete Study Material of General Science i.e. Physics, Chemistry and Biology is given in a compiled form that will be very helpful for the students of 6th to 12th class, undergraduates and those who are preparing for competitive exams familiar with the diversity of the subject and make them understand the concepts.

The change in temperature of a body causes expansion or contraction of that body. Most of the substances expand on heating and contract on cooling. This is called thermal expansion. It is interesting to know why the level of mercury rises with temperature, wires attached to electric poles contract or expand with change in season, etc. This all is due to thermal expansion.

Some liquids show resistance to motion and it is like internal friction. This is called viscosity. Liquids acquire a free surface when poured in a container. The additional energy that these surfaces have is called surface tension.

Sound is a form of energy. It is that form of energy which makes us hear. Sound wave is a vibratory disturbance in a medium which carries energy from one point to another without there being a direct contact between the two points. According to Doppler Effect the frequency of sound wave changes with motion, either of the source or of the observer. The reflection of sound wave is called echo. It varies in different mediums.

Refraction is the change in direction of light when it passes from one medium to another. The working of a lens is based on the refraction of light when they pass through it. Lens is a piece of transparent glass bound by two spherical surfaces and is used to magnify objects. They are of two types convex and concave. The image produced by convex lens is enlarged and the image produced by concave lens is diminished.

Refraction is the bending of light when it goes from one medium to another so, when a ray of light passes through a glass prism, refraction of light occurs both, when it enters the prism as well as when it leaves the prism. Since the refracting surfaces are not parallel, therefore, the emergent ray and incident ray are not parallel to one another. In this case the ray of light is deviated on passing through the prism.

The Human eye works on the refraction of light through a natural convex lens made up of transparent living material and enables us to see things around us. Also, the ability to see is called vision, eyesight or drishti. Sometimes a person cannot able to see distant or nearby objects clearly and have a defect of vision which can be fixed by wearing spectacles.

The Universe is everything we can touch, feel, sense, measure or detect. It includes living things, planets, stars, galaxies, dust clouds, light, and even time. All the existing matter and space as a whole is considered as universe. The universe is believed to be at least 10 billion light years in diameter and contains a vast number of galaxies each containing millions or billions of stars.

The Solar System consists of the eight planets that orbit our Sun and other celestial bodies such as moons, comets, asteroids, minor planets, and dust and gas. Sun is considered as the centre of the solar system and all the planets revolve around the sun. The eight planets in the solar system in the increasing order of their distance from the Sun are Mercury, Venus, Earth and Mars, Jupiter, Saturn, Uranus and Neptune.

Resistance is the hindrance to the flow of electric charge. The obstruction posed in the way of current carrying particles by fixed particles creates resistance in an electric circuit. The measurement of the electric current in an electric circuit therefore, depends on two factors primarily i.e. Potential Difference across the ends of the conductor and Resistance of the conductor. The relationship between current and potential difference is also explained by Ohm s Law.

Refraction of light takes place when light travels from one medium to another. It takes place at the boundary between the two mediums. Also, we know that speed of light is different in different mediums. So, it occurs due to the change in speed of light on going from one medium to another.

A spherical mirror is that mirror whose reflecting surface is the part of a hollow sphere of glass. Spherical mirrors are of two types: concave mirrors and convex mirrors. In a concave mirror reflection of light takes place in the bent in surface or concave surface. In a convex mirror the reflection of light takes place at the bulging-out surface or convex surface.

Light is a form of energy which enables us to see objects and the straight line along which it travels is called ray of light. Reflection of Light is the process of sending back the light rays which falls on the surface of an object. The image formed due to reflection of an object on a plane mirror is at different places.

A current carrying conductor creates a magnetic field around it, which can be comprehended by using magnetic lines of force or magnetic field lines. Magnetic field in a current carrying straight conductor is in the form of concentric circles around it. The direction of magnetic field; in relation to direction of electric current through a straight conductor can be depicted by using the Right Hand Thumb Rule which is also known as Maxwell s Corkscrew Rule.

A wave is a phenomenon whereby energy is moved without the transference of any material. X-rays, ultraviolet rays, light and radio waves all travel at the same speed through a vacuum.

When a red hot piece of iron cools down, it transfers energy to its surroundings in three possible ways: conduction, convection or radiation.


Computer Fundamentals – Computer Science Questions and Answers #telephone #answering #service


#computer questions answered free

#

Computer Science – Computer Fundamentals

Why Computer Science Computer Fundamentals?

In this section you can learn and practice Computer Science Questions based on “Computer Fundamentals” and improve your skills in order to face the interview, competitive examination and various entrance test (CAT, GATE, GRE, MAT, Bank Exam, Railway Exam etc.) with full confidence.

Where can I get Computer Science Computer Fundamentals questions and answers with explanation?

IndiaBIX provides you lots of fully solved Computer Science (Computer Fundamentals) questions and answers with Explanation. Solved examples with detailed answer description, explanation are given and it would be easy to understand. All students, freshers can download Computer Science Computer Fundamentals quiz questions with answers as PDF files and eBooks.

Where can I get Computer Science Computer Fundamentals Interview Questions and Answers (objective type, multiple choice)?

Here you can find objective type Computer Science Computer Fundamentals questions and answers for interview and entrance examination. Multiple choice and true or false type questions are also provided.

How to solve Computer Science Computer Fundamentals problems?

You can easily solve all kind of Computer Science questions based on Computer Fundamentals by practicing the objective type exercises given below, also get shortcut methods to solve Computer Science Computer Fundamentals problems.