A river of salty water is flowing with a velocity `2m//sec`. If the density of water is `1.2 gm//c c`, the kinetic energy of each of cubic metre of water is

At 4^(@)C , the density of water is

The density of water at 4^@C is:

What is the density of water at 4^@C ?

A river is flowing with a velocity of 2m/s. If the width of river in 100 m and swimmer wants to cross river is shortest time, what time (in sec) would he take if velocity of swimmer in still water is 4 m/s ?

Water is flowing in a pipe of diameter 4 cm with a velocity 3 m//s . The water then enters into a tube of diameter 2 cm . The velocity of water in the other pipe is

What is kinetic energy of 1 gm of O_(2) at 47^(@)C ?

A ball of mass 5.0 gm and relative density 0.5 strikes the surface of the water with a velocity of 20 m/sec. It comes to rest at a depth of 2m. Find the work done by the resisting force in water: (take g = 10 m//s^(2) )