Which statement best compares light passing through the two blocks?

light is not separated by wavelength as it exits object x.
light moves faster as it moves within object x.
light is only refracted once as it passes in and out of object y.
light is refracted less when it passes through object y.

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.