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Work And Energy...

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  • Question 1
    1 / -0

    Which of the following devices does not come under the category of lever?

  • Question 2
    1 / -0

    Find the mechanical advantage of a machine, which has a velocity ratio as 3.2 and efficiency as 75%.

  • Question 3
    1 / -0

    The temperature of water at the bottom of a waterfall is higher than that of the water at the top because

  • Question 4
    1 / -0

    Sound energy is converted into electrical energy in a

  • Question 5
    1 / -0

    When a spring is wound, a certain amount of PE is stored in it. If this wound spring is dissolved in acid, the stored energy

  • Question 6
    1 / -0

    The spring of the winding knob of a watch has

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