Question

A heat engine has a hot reservoir of 680°C and a cold reservoir of 220°C. What is the efficiency of the engine

Answer 1

@danish071996

Answer 2

@Australopithecus

Answer 3

220C = 428F 680C= 1257 F

Answer 4

a 58.3%
b 75.9%
c 62.3%
d 72.1%
e 67.6%

Answer 5

grr lol

Answer 6

\[%\ efficiency\ = (1-\frac{(T_{cold}}{T_{hot}})*100\]

Answer 7

?

Answer 8

This is the formula you need
\[efficiency\ percent = (1 - \frac{T_{cold}}{T_{hot}})*100\]

Answer 9

Where Temperature is in kelvin, so add 273 to each of your temperatures.