Author Question: An ideal reversible heat pump is taking heat from the outside air at -10.0C and discharging it into ... (Read 33 times)

stock · **on:** Jul 29, 2018

An ideal reversible heat pump is taking heat from the outside air at -10.0C and discharging it into the house at 18.0C. What is the coefficient of performance of this heat pump?

A) 10.4
B) 9.44
C) 0.644
D) 0.533
E) 0.0962

Question 2

What is the surface temperature of a star, if its radiation peak occurs at a frequency of 1.06 1015 Hz? (c = 3.00 108 m/s, and the constant in Wien's law is 0.00290 m K)

A) 17,000 K
B) 14,500 K
C) 19,000 K
D) 20,400 K
E) 10,200 K