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SL ARORA-Work, Energy and power-EXERCISE
- A massless platform is kept on a light elastic spring as shown in figu...
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- About 4xx10^(9)kg of matter is converted into energy in the sun each s...
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- Show that energy equivalent to atomic mass unit equals nearly 933 MeV ...
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- 500 kg of water is heated from 20^(@) to 100^(@) C . Calculate the inc...
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- 1 mg of uranium is completely destroyed in an atomic bomb. How much en...
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- An electron - positron pair annihilates at rest to produce gamma-rays....
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- if 10 g of mass is completely converted into energy, then find the cor...
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- A lift is designed to carry a load of 4000kg through 10 floors of a bu...
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- A machine can take out 1000 kg of mud hour from a dept of 100 m . If ...
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- One coolie takes 1min to raise a box through a height of 2m. Another o...
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- An energies of 4.9 K.W power is used to pump water from a well 50 m d...
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- Water is pumped out of a well 10 m deep by mean of a pump rated at 10 ...
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- A 30m deep well is having water up to 15 m. An engine evacuates it in ...
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- The human heart forces 4000cm^(3) of blood per minute through the arte...
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- A car of mass 1000kg accelerates uniformly from rest to a velocity of ...
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- A car of mass 1000kg accelerates uniformly from rest to a velocity of ...
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- A car of mass 1000 kg accelerrates uniformly from rest to a velocity o...
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- A vehicle of mass 30 quintals moving with a speed of 18km h^(-1) coll...
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- A body of mass 2 kg makes an elastic collision with another body at re...
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- Ball A of mass m strickes a stationary ball B of mass M and undergoes ...
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