The mass flow rate in a 4.0-m wide, 2.0-m deep channel is 4000 kg/s of water. if the velocity distribution in the channel is linear with depth what is the surface velocity of flow in the channel?

An engine runs on the ideal diesel cycle. the cycle has a compression ratio of 20 and a cutoff ratio of 2. the highest temperature in the cycle is 1200 k. if the heat into the system is 300 kj/kg of working fluid and using variable specific heats determine the work produced per mass of working fluid