Author Question: A Carnot refrigerator has a coefficient of performance = 2.5. The refrigerator consumes 50 W of ... (Read 840 times)

itsmyluck · **on:** Jul 29, 2018

A Carnot refrigerator has a coefficient of performance = 2.5. The refrigerator consumes 50 W of power. How much heat is removed from the interior of the refrigerator in 1 hour?

A)

7.5 kJ

B)

4.5 105 J

C)

1.8 105 J

D)

7.2 105 J

E)

72 kJ

Question 2

When a proton passes through matter, it is possible for it to interact with the matter in such a way that an electron and a positron are produced; this interaction is referred to as

A)

the photoelectric effect.
B)

the Compton effect.
C)

the de Broglie effect.
D)

pair production.
E)

none of the given answers