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Work and Energy...

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  • Question 1
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    When the K.E. of a body is increased by 300%, the momentum of the body is increased by

  • Question 2
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    An object A of mass 10 kg has a kinetic energy equal to 180 J. What will be its momentum?

  • Question 3
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    What is the kinetic energy of a body of mass 0.1 kg and momentum 20 kg m/s?

  • Question 4
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    The ratio of the magnitudes of the linear momentum of two blocks A and B is 1 :√3. What is the ratio of their kinetic energies?

  • Question 5
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    A body is dropped from a certain height above the ground. When it is half way down, it possesses

  • Question 6
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    At which position does a pendulum has the highest PE?

  • Question 7
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    If an electric bulb of 100 watt is lighted for 2 hours, how much electric energy would be consumed?

  • Question 8
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    How much energy will an electric motor of 1 horse power consume in one second?

  • Question 9
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    If a force F is applied on a body and it moves with a velocity v, the power will be

  • Question 10
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    A motorboat is travelling with a speed of 7.0 m/s. If the force on it due to water fall is 600 N, what will be the power of the boat?

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