Please select a subject first
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What is wind energy? How is wind energy used to produce electricity? How much electric power is generated in India using the wind energy?
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State unit of momentum in the CGS system.
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State unit of momentum in the SI system.
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Define absolute units of force in CGS as well as the SI system.
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Explain the following:
Why does a boatman push the bank backward with a long bamboo pole, on launching his boat in the water?
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State unit of mass in CGS system.
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Describe, briefly how can you calculate the value of ‘g’ with a simple pendulum.
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What is the SI unit of force?
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Write the SI unit of momentum.
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Name the physical quantity associated with the motion of a body.
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Which has more momentum: a fast pitched soft ball or a soft pitched soft ball?
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What is the ratio of SI units to CGS units of momentum?
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What will be the momentum of a body at rest?
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What do you mean by action?
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If a number of forces act on a stationary body at the same point, then what do you conclude from it?
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Why do passengers tend to fall sideways when the bus takes a sharp turn?
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Why are passengers thrown in the forward direction when a running bus stops suddenly?
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Why do passengers tend to fall backward when it starts suddenly?
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Can internal forces change the velocity of a body?
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