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.

emily ruth's annual premium is $1058.50

step-by-step explanation:

emily ruth is a female of 27 years age purchasing 20 year endowment insurance with face value $25000.

from the given table,

for females, the age of a male 3 years younger should be used.

so, we have to check for 24 year male for 20 year endowment.

it is 42.34 for every $1000 face value.

for a face value of $25000,

it is 25 * 42.34 = $1058.50

∴ emily ruth's annual premium is $1058.50

a 2,000 calorie based diet.