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SL ARORA-Work, Energy and power-EXERCISE
- What kind of energy transformations take place at a hydroelectric powe...
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- A spring is cut into two equal halves. How is the spring constant of e...
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- Define power and its SI unit.?
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- The unit same as the watt second.
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- What are the dimensions of power ?
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- How many watts are there in one horse power ?
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- Name the physical quantity, which is expressed as force times velocity...
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- For a planet revolving round the sun, when it is nearest to the sun
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- What is a conservative force ? Give one example.
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- Which physical quantities are conserved in an elastic collision?
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- Which physical quantity is conserved in both, elastic and inelastic co...
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- If two bodies stick together after collision. Will the collision be el...
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- A bullet gets embedded in a wooden block. Where does its KE go?
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- Give three examples of forces which are conservative in nature.
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- Friction is non-conservative force. How ?
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- Name the process in which (i) momentum is conserved but K.E. is not co...
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- A coolie with load on his head is walking on a horizontal platform. Wh...
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- An artificial satellite is at a height of 36,500 km above earth's surf...
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- Give two examples from daily life where according to physics, work don...
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- What is the source of KE of falling rain drops ?
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