Two children playing on a spinning merry-go-round take turns riding and pushing. the merry-go-round slows, stops, and then speeds up again as the children switch places. what best describes the motion of a third child who only sits and rides the merry-go-round?

Which statement best describes who the period and frequency of electromagnetic was change between gamma rays and microwaves? a) the period and frequency stay the same. b) the period increases and the frequency decreases. c) the period decreases and the frequency increases. d) the period increases and the frequency increases.

State the right hand rule of the direction of magnetic field in a conductor carrying current

Ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a temperature of 18oc and exits at 6.0 bar. the refrigerant undergoes a throttling process. determine the temperature, in oc, and the quality of the refrigerant at the exit of the expansion valve.