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Work and Energy...

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  • Question 1
    1 / -0

    A wound watch spring has ______ energy.

  • Question 2
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    Asha lifts a doll from the floor and places it on a table. If the weight of the doll is known, what else does one need to know in order to calculate the work Asha has done on the doll?

  • Question 3
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    If the speed of a motor car becomes six times, then the kinetic energy becomes

  • Question 4
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    The flowing water of a river primarily possesses ______ energy.

  • Question 5
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    When a body moves with a constant speed along a circle, then which of the following is correct : 

  • Question 6
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    Two bodies of equal weight are kept at heights of h and 1.5 h respectively. The ratio of their P.E. will be :

  • Question 7
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    A body rolling down a hill has :

  • Question 8
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    Kilowatt hour (kWh) represents the unit of :

  • Question 9
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    The unit of power is:

  • Question 10
    1 / -0

    A ball of mass $$200  g$$ falls from a height of $$5  m$$. What is its K.E. when it just reaches the ground ?

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