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Work And Energy...

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  • Question 1
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    Calculate the work done in lifting 100 kg of water through a vertical height of 3 meter. (Assuming g = 10 m/s2)

  • Question 2
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    A dry cell converts one form of energy into another.Which of the following options depicts the two forms?

  • Question 3
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    Which of the following statements is not true?

  • Question 4
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    Which of the following physical quantities has its units Watt?

  • Question 5
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    Which of the following options is correct?

  • Question 6
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    How much work is done when a force of 2 N moves a body through a distance of 10 cm in the direction of force?

  • Question 7
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    A ball of mass 200 g falls from a height of 5 m. What is its kinetic energy, when it just reaches the ground? (g = 9.8 m/sec2)

  • Question 8
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    Two bodies A and B of equal masses are kept at height of h and 2h respectively. What will be the ratio of their potential energies?

  • Question 9
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    What is the power of an engine which is capable of doing 10,000 J of work in 10 minutes?

  • Question 10
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    When we compress a coil spring, the elastic potential energy

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