College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

تمرين 54

The heat output of a particular engine is 7.5 × 10 3 J per cycle, and the net work out is 4.0 × 10 3 J per cycle. (a) The heat input is (1) less than 4.0 × 10 3 J, (2) between 4.0 × 10 3 J and 7.5 × 10 3 J, (3) greater than 7.5 × 10 3 J. Explain. (b) What is the heat input and thermal efficiency of the engine