sydj2002 sydj2002

24-04-2020
Physics

contestada

What is the efficiency of a device that takes 400J of heat and does 120J of work while giving off 280 J of heat

Respuesta :

muhammadtalhabinyous muhammadtalhabinyous

27-04-2020

Answer:

30%

Explanation:

Efficiency = useful work / heat absorbed x 100

= 120/400 x 100

= 0.3 x 100

= 30%

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