An engine can pump 30,000 L of water to a vertical height of 45 m in 10 min. Calculate the work done by the machine and the power. (Density of water = `10^3 kg//m^3, 1000 L - 1 m^3 , g = 9.8 ms^(-2)`)

The power of pump, which can pump 200 kg of water to a height of 50 m in 10 sec, will be

A water pump raises 50 litres of water through a height of 25 m in 5 .Calculate the power of the pump required . (Take g=10 N kg^(-1) and density of water =1000 kg m^(-3) )

An engine pumps 800 kg of water through height of 10 m in 80 s. Find the power of the engine if its efficiency is 75%

The lower end of a clean glass capillary tube of internal radius 2 xx 10^(-4) m is dippled into a beaker containing water . The water rise up the tube to a vertical height of 7 xx 10^(-2) m above its level in the beaker. Calculate the surface tension of water. Density of water = 1000 kg m^(-3), g = 10 m s^(-2) .

The density of water is ........ "kg/m"^3 .

The power of a pump, which can pump 500 kg of water to height 100 m in 10 s is

A man weighing 70 kg carries a 30 kg box to the top of a building 20 m high. Calculate the work done by the man (take g = 9.8 ms^(-2) ).

A square plate of side 10 m is placed horizontally 1 m below the surface of water. The atmospheric pressure is 1.013xx10^(5)Nm^(-2) . Calculate the total thrust on the plate. (Density of water rho=10^(3)kg m^(-3), g=9.8ms^(-2))

An engine pumps 373 kg of water upto height of 16 m in 40 seconds. Rated power of engine if its efficiency is 80% is (1 horse power = 746 W and g =10 m/ s^2 )

An engine pumps up 100 kg water through a height of 10 m in 5 s . If efficiency of the engine is 60% . What is the power of the engine? Take g = 10 ms^(2) .