How much heat is needed to change 7.2 kg of solid ethyl alcohol to liquid?
Show work.

In addition to gravity, what is the other predominant force that affects the motion of a pendulum?

Does the asteroid belt revolve around the sun?

The average atmospheric pressure on earth is approximated as a function of altitude by the relation patm = 101.325 (1 − 0.02256z)5.256, where patm is the atmospheric pressure in kpa, and z is the altitude in km with z = 0 at sea level. determine the approximate atmospheric pressures at atlanta (z = 306 m), denver (z = 1610 m), mexico city (z = 2309 m), and the top of mount everest (z = 8848 m).