If a vibrating string is made shorter (i. e., by holding your finger on it), what effect does this have on the frequency of vibration and on the pitch? 1. both decrease. 2. no effect 3. both increase. 4. the frequency decreases; the pitch decreases. 5. the frequency increases; the pitch decreases.

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.