Calculate the power of heart if it discharges 60 cc of blood at each beat against an average pressure of 10 cm of mercury column with a pulse frequency of 80 per minute.

An athlete of mass 60 kg skips at the rate of 20 steps per minute through an average height of 25 cm. The power developed is

A pump on an average delivers 300 kg of water at a height of 10 cm in 1 minute.Calculate the average power of the pump in h.p.

A metal rod 25 cm long and 10sq cm in cross section has it's one end placed in boiling water and the other end in melting ice. Calculate the mass of ice method per minute if K for metal is 378 W/mk. Latent heat of fusion of ice - 80 K cal/gm . J = 4200 j/Kcal.