Physics
A bullet of mass 10gm is fired with a velocity of 40 m/s from a gun of mass 8 kg. Find the recoil velocity (in m/s) of the gun.

0.1
0.05
2
4

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Physics
When a pail of water is swung in a vertical circle, the water does not fall out at the top of the loop when the speed is

Above a certain minimum value irrespective of amount of water in the pail
Below a certain minimum value depending on amount of water in the pail
Below a certain minimum value irrespective of amount of water in the pail
Above a certain minimum value depending on amount of water in the pail

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