45) A bucket of water of 50 kg is lifted vertically upwards with a uniform acceleration of 0.5 m/square second (g=10m/square second). Calculate the tension in the rope?

46) A measure of the resistance of a liquid to shearing forces is given by its

47) Annealing is a heat treatment carried out to

48) The use of Draft tube in a reaction type water turbine helps to

49) A ball is projected up vertically with a velocity of 9.8 m/s. The time it takes to reach the ground is