Which of these devices transfers thermal energy from a cool area to a warm area?
a. thermostat
b. vaporizer
c. combustion engine
d. refrigerator

D. Refrigerator

Explanation:

The basics characteristics of a refrigerator is its ability to keep things cold or at a low temperature.

This is possible because of the presence of heat pump which transfers thermal energy(heat) from a cold area(inside the fridge) to a warm area.

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

-reverse card

momentum of soft ball three times less than baskey ball