The density of water is the greatest at a temperature of
a. 273 k.
b. 277 k.
c. 4 k.
d. 0 k.

If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the refrigerator if it released 380j of energy to the room?

Connie has $660,000 she wants to save. if the fdic insurance limit per depositor, per bank, is $250,000, which of these way is distributing her money between three banks will guarantee that all of her money is insured ?

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?