What is specific heat capacity?
o
a. a physical change from one form (or phase) of matter to another.
b. the amount of energy required for a unit mass of a substance to
undergo a phase change from a liquid to a gas.
o
c. the amount of energy required for a unit mass of a substance to
undergo a phase change from solid to liquid.
o
d. the amount of energy required to raise the temperature of 1 kg of
a substance 1°c.

Moon effect. some people believe that the moon controls their activities. if the moon moves from being directly on the opposite side of earth from you to being directly overhead, by what percentage does (a) the moon's gravitational pull on you increase and (b) your weight (as measured on a scale) decrease? assume that the earth–moon (center-to-center) distance is 3.82 × 10^8 m, earth's radius is 6.37 × 10^6 m, moon's mass is 7.36 × 10^22 kg, and earth's mass is 5.98 × 10^24 kg.

The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.

9.98 kg of r-134a at 300 kpa fills a rigid container whose volume is 14 l. determine the temperature and total enthalpy in the container. the container is now heated until the pressure is 600 kpa. determine the temperature and total enthalpy when the heating is completed. use data from the steam tables.