What do you call the warming effect some gases have on the atmosphere by absorbing and radiating heat?
a. convection
b. radiation
c. solar heating
d. the greenhouse effect?

According to social exchange theory, altruistic behaviors benefit the individual who performs them. t/f

Aforce of 200 n is applied to an input piston of cross-sectional area 2 sq. cm pushing it downward 2.8 cm. how far does the output piston of cross-sectional area 12 sq. cm move upward? show all work.

Calculate the amount of heat produced when 18000 coulombs of charge is transferred in one hour through a potential difference of 50v