Why is it difficult for a fire fighter to hold a hose that ejects large amount of water at high speed?

Fruit that contains large amount of water

Large amount of fresh water is present in

Elimination of which substance requires large amount of water ?

A spherical glass vessel has a cylindrical neck 8 cm long, 2 cm in diameter. The diameter of the spherical part is 8.5 cm. By measuring the amount of water it holds, a child find its volume to be 345 cm^3 . Check whether she is correct, taking the above as inside measurements and pi = 3.14

A : On a rainy day, it is difficult to drive a car or bus at high speed. R : The value of coefficient of friction is lowered on a rainy day due to wetting of the surface.

1000 spherical drop of water each 10^-8m in diameter coalesce to form one large spherical drop the amount of energy liberated in this process in joules is (surface tension of the water is 0.075M/m)

(A) : Salts of Mg does not impart any colour to the flame (R): Due to small size and high effective nuclear charge, 'Mg' requires a large amount of energy for excitation of electrons.

A stone dropped from the top of a tower of height 300 m high splashes into the a pond of water near the base of the tower.When is the splash heard at the top given that the speed of sound air is 340 ms^(-1) . (g = 9.8 ms^(-2))