Aheat engine has an effeciency of 0.48. initially, the heat input to the engine is qh. then the heat input is increased by a factor of 2.4. by what factor does the net work w change? 1 0.42 2.4 5.8

An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.

Which of the following best describes the circuit shown below?

When solid surfaces slide over each other the kind of friction that occurs is called friction