Asolid sphere with mass, m, and radius, r, rolls along a level surface without slipping with a linear speed, v. what is the ratio of rotational to linear kinetic energy

The density of a liquid could be found by using

Avoltaic cell converts chemical energy to

Abag of potato chips contains 2.00 l of air when it is sealed at sea level at a pressure of 1.00 atm and a temperature of 20.0 deg c. what will be the volume of the air in the bag if you take it with you, still sealed, to the mountains where the temperature is 7.00 deg c and atmospheric pressure is 70.0 kpa? assume that the bag behaves like a balloon and that the air in the bag is in thermal equilibrium with the outside air.