# Question

An ice machine is to convert 10oC water to 0oC ice. If the machine has a COP of 2.0 and consumes electrical power at a rate of 1.0 kW, how much ice can it make in 1.0 h?

## Answer to relevant Questions

An Olympic weight lifter lifts 145 kg a vertical distance of 2.1 m. When he does so, 6.0 x 104 J of heat is transferred to air through perspiration. Does he gain or lose internal energy and how much? If they have the same tension and length, will a thicker or a thinner guitar string sound higher in frequency? Why? (a) At what position is the magnitude of the force on a mass in a mass–spring system minimum: (1) x = 0, (2) x = – A, or (3) x = + A? Why? (b) If m = 0.500 kg, k = 150 N/m, and A = 0.150 m, what are the magnitude of the ...A vertical spring has a 0.200-kg mass attached to it. The mass is released from rest and falls 22.3 cm before stopping. (a) Determine the spring constant. (b) Determine the speed of the mass when it has fallen only 10.0 ...The displacement of an object is given by y = (5.0 cm) cos[(20π rad/s)t]. What are the object’s (a) Amplitude, (b) Frequency, and (c) Period of oscillation?Post your question

0