34. a steam engine operates between 300k and 600k, the maximum possible efficiency of this
engine is
a. 100%
b. 75%
c. 50%
d. 25%

c. 50%

Explanation:

The maximum efficiency of a heat engine is:

η = 1 − (Tc / Th)

where Tc is the low temperature and Th is the high temperature.

In this case, Tc = 300 K and Th = 600 K:

η = 1 − (300 / 600)

η = 0.50

The maximum possible efficiency is 50%.

answer:   you might love summer weather, but you don’t want it to feel like the sun is inside your car. but a hot car that just won’t seem to cool down might be a bigger of a problem than you think. your car relies on being at the right temperature.

explanation:

e

explanation:

there is no change in the electric potential energy as it is in rest on both conditions.