Consider a sealed can that is filled with refrigerant-134a at 20 degrees C. Now a leak develops, and the pressure in the can drops to the local atmospheric pressure of 80 kPa. The temperature of the refrigerant in the can is expected to drop to (rounded to the nearest integer) Hint: The remaining refrigerant in the can contains both liquid and vapor at the final condition.

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

Because air contracts as it cools, the air pressure inside a freezer is typically lower than on the outside. why do ice cubes inside a freezer tend to shrink over time? a. the ice dissolves oxygen from the air, forming a denser crystalline matrix.b. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds.c. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer.d. the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer.

You hang a book bag on a spring scale and place the bag on a platform scale so that the platform scale reads 23.7n and the spring scale reads 13.8n. what is the magnitude of the force that earth exerts on the bag?