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MODERN PUBLICATION-WORK AND ENERGY-EXERCISE
- Give an example of electrical energy converted into light energy.
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- What are two types of potential energy? Give two examples of each.
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- Define K.E. and derive the expression for K.E.
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- The kinetic energy of a body of mass 15 kg is 30 J . What is its momen...
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- An object of mass 15 kg moving with a uniform velocity of 4ms^-1. What...
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- What is the work to be done to increase the velocity of a car form 30 ...
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- Find the energy possessed by an object of mass 10 kg when it is at a h...
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- A boy of mass 50 kg runs up a staricase of 45 steps in 9 s. If the hei...
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- An electric bulb of 60 W is used for 6 hours per day. Calculate the un...
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- A ball is dropped a height h. The velocity of the ball when it reaches...
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- When a body falls freely towards the earth, then its total energy.
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- A car is accelerated on a levelled road and attains a velocity 4 times...
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- In case of negative work the angle between the force and displacement ...
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- A girl is carrying a school bag of 3 kg mass on her back and moves 200...
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- Which one of the following is not the unit of energy?
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- The work done on a object does not depend upon the
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- Water stored in a dam possesses
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- A body is falling from a height h. After it has fallen a height h/2, i...
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- Two electrodes are maintaned at a potential difference of 100 V. An e...
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- A car with K.E. 100 J is moving on a horizontal road. Now 200 J work i...
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