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its feet are good insulators
the body is earthed
it has high resistance
it does not form a closed path for the flow of current
A bird sitting on a high tension electric wire does not get electrocuted because
A block of mass m is pulled along a surface as shown. The coefficient of kinetic friction between the block and the surface is m and the tension in the rope is T. The acceleration of the block is
A block P released from the top of a smooth inclined plane slidesdown the plane. Another block Q is dropped from the same point and falls vertically downwards. Which one of the following statements will be true if the friction offered by air is negligible?
A boat carrying a number of large stones is floating in a water tank. If the stones are unloaded into the water, the level of water in the tank
A boat loaded with rocks floats in the middle of a swimming pool. A man in the boat throws the rocks overboard. The level of water in the pool will
A body absorbs heat most if it is
A body is initially moving with a velocity of 5 m/s. It undergoes an acceleration of 2 m/s2 for 4 seconds. Find the displacement (in m) of this body in these 4 seconds.
A body moving in a circular path with a constant speed has a
A body of mass 5 kg accelerates from 12 m/s to 20 m/s in 4 seconds due to the application of a force on it. Calculate the magnitude of this force (in N).
A body that is moving with uniform acceleration covers 200 m in the first 2 s and 220 m in the next 4 s. The velocity in m/s after 7 s is