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MODERN PUBLICATION-WORK AND ENERGY-EXERCISE
- 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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- Two bodies with kinetic energy in the ratio of 4:1 are moving with equ...
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- A certain household has consumed 250 units of electric energy during a...
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- If mass is doubled and velocity is halved then new kinetic energy is
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- When the force retards the motion of the body, the work done is :
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- In which of the following examples, work done is negative?
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- In which of the following applications is work is not done?
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- For a force to do maximum work, what should be the angle between force...
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- State the SI unit of potential energy.
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- What is the commercial unit of electical energy? Represent it in terms...
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- A boy throws a rubber ball vertically upwards. What kind of work is do...
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- A boy throws a rubber ball vertically upwards. What kind of work is do...
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- A person holds a bundle of hay over his head for 30 minutes and gets t...
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