problem20_19

# University Physics with Modern Physics with Mastering Physics (11th Edition)

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20.19: The total work that must be done is J 10 . 4 90 m) 100 )( s m kg)( . 9 80 500 ( 5 2 tot × = = = mgy W J 250 H = Q Find C Q so can calculate work W done each cycle: H T T Q Q C H C - = [ ] J 7 . 120 K) ( . 773 15 K) ( . 373 15 J) 250 ( ) ( H H C C
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Unformatted text preview: -=-= Q T T Q J 3 . 129 H C = + = Q Q W The number of cycles required is cycles. 3790 J 3 . 129 J 10 09 . 4 5 tot = × = W W...
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• Cycle, QH TH QC

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