Author Question: One advantage of using air as the working fluid in a solar collector is ________. a. that freezing ... (Read 60 times)

AEWBW · **on:** Jul 28, 2018

One advantage of using air as the working fluid in a solar collector is ________.
a. that freezing will not be a problem
b. that water heats up faster than air
c. a smaller storage facility can be used
d. that one needs hot water for showers

Question 2

Which type of force would be the equal and opposite force to a gravitational force?
a. gravitational
b. electromagnetic
c. strong
d. weak
e. It could be any one of the above or some combination of them.