michie18 michie18

18-02-2016
Physics

contestada

What is the efficiency of a device that takes in 40,000 J of heat and does 12,000 J of work while giving off 28,000 J of heat? Use and convert to a percentage. A.70% B. 57% C. 30% D. 43%

Respuesta :

AutumnHDunaway AutumnHDunaway

18-02-2016

(12,000 / 40,000) * 100 = 30

Hope this helps!!(:

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