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71
A raised hammer possesses
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Answer: Option D
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72
What is the potential energy of an object of mass 40 kg when it is lifted at a height of 5m above the ground?
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Answer: Option B
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73
Mechanical energy - kinetic energy = ?
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Answer: Option B
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74
What is called pushing or pulling an object to move it?
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Answer: Option B
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75
An object capable of performing a work has . . . . . . . .
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Answer: Option B
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76
The energy received by an object by its position and configuration is called?
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Answer: Option C
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77
The energy of a body is
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Answer: Option D
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78
In which of the following energy is kinetic energy?
1. A bullet fired by a gun
2. A fast moving railway engine
3. Speed of a simple pendulum
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Answer: Option D
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79
A boy of 50 kg mass climbs 45 stairs in 10 seconds. If the height of each stair is 16cm then find his power?
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Answer: Option C
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80
Which of the following physical quantity measure the rate of work?
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Answer: Option D
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