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1. |
A steam engine delivers 5.4 × 108J of work per minute and absorbs 3.6 × 109J of heat per minute from its boiler. What is the efficiency of the engine? |
A. | 0.15 |
B. | 0.75 |
C. | 0.85 |
D. | 0.55 |
Answer» B. 0.75 | |