Arigid cylinder with a movable piston contains 50.0 liters of a gas at 30.0 degree c with a pressure of 1.00 atmosphere. what is the volume of the gas in the cylinder at stp?
(1) 5.49 l (3) 55.5 l
(2) 45.0 l (4) 455 l

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d