A steam engine delivers `5.4xx10^8 J` of work per minute and takes `3.6xx10^9` J of heat per minute from the boiler. What is the efficiency of the engine ? How much heat is wasted per minute ?

A steam engine delivers 5.4 xx 10^(8)J of work per minute and services 3.6 xx 10^(9) J of heat per minute from its boiler. What is the efficiency of the engine? How much heat is wasted per minute?

A pump can raise 100 L of water per minute to a height of 10 m . What should be the power of the pump ?

A pump lifts 5000kg of water per minute through a height of 12m. Find the power of the engine if 30 % of energy is wasted.

A fire engine raises 6 kL of water per minute to a height of 2m and ejects it at 9.2m*s^(-1) . Find the power of the engine. Given mass of 1L of water is 1 kg.

How much water per minute a pump of power 2 kW can reise to a height of 10 m ? (g=10 m//s^(2))

To verify the cash balance, the auditor of Jaya Bank Ltd. Employs his assistant to count cash in hand of Rs. 4500. At first he counts @ Rs. 150 per minute for 10 minutes only, at the end of which time he begins to count @ Rs.2 less every minute than he did in the previous minute. Ascertain how much time he will take to count Rs. 4500 ?