: An engine takes in 493 kW of heat and rejects 128 kW of heat. What could be the power generated assuming the engine is not ideal (assuming there are losses beyond what is measured)? View
: An engine takes in 493 kW of heat and rejects 128 kW of heat. What is the power generated (assuming there are no losses)? View
: You have a heat pump that takes in 397 kW of heat and puts out 599 kW of heat. What is the coefficient of performance (C.O.P.) of the system (do NOT express this value as a percentage)? View
: You have a refrigeration system that takes in 397 kW of heat and puts out 599 kW of heat. What is the coefficient of performance (C.O.P.) of the system (do NOT express this value as a percentage)? View
: What is the efficiency of the heat engine in the previous problem (express your answer as a percentage)? View
: If you run a heat engine that takes in 413 kW of heat and rejects 164 kW of heat, what is the power generated by the engine? View
: Now that you’ve filled the ball, you know that it’s at a gauge pressure of 7 psi and the air inside is again at the ambient temperature of 298 K (so you filled it quickly and allowed it to reach equilibrium, as discussed in lecture). What is the new mass of air inside the ball? (Please use the absolute pressure in the ideal gas formula) View
: You need to fill up a basketball that’s low on air pressure. It’s initially at a gauge pressure of 6 psi, and you want to inflate it to 7 psi so that it is properly inflated. The volume of the ball is 7000 cubic centimeters, and you can assume that the volume of the ball remains constant as you pump air into it. What is the initial mass of air in the ball, if you assume that the air in the ball is at the ambient temperature of 298 K and that the ideal gas relations hold true for the air in the ball? (Please use the absolute pressure in the ideal gas formula) View
