Class -VIII
Physics
Time-20 min (Numerical) FM - 10
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1. The capacity of an RD bottle is 100 cc and its mass is 35 g. Find the mass of the bottle when it is filled with a liquid of density 500 kg/cu.m.
2. A box weighs 4500N and it exerts a pressure of 2400Pa on the ground. Find the area of its base.
3. A pamp can lift 50 kg of water per minute to a tank. If the potential energy of the water stored is 20.5k, find the height of the tank.[g=10m/sq.s]
4. Calculate the kinetic energy of an object weighing 500 kg moving with a velocity of 25m/s.
5. Write the advantages of mercury with respect to water as a barometric liquid.
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