A steam engine delivers `5.4×10^(8)J` of work per minute and services `3.6 × 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 frog is slipping into a well from upper surface at rate of 3 meters per minute, after 5 minutes what is the position of the frog in the well? (Con)

A motor engine pumps 1800 L of water per minute from a well dpth 30 m and allows to pass through a pipe of cross-sectional area 30 cm^2 . Then the power of the engine is (Acceleration due to gravity, g=10 ms^-2 )

A Carnot engine working between 300 K and 600 K has work output of 800 J per cycle. What is amount of heat energy supplied to the engine from source per cycle