This photograph captured:

Thermal energy is measured in

When a gas in a container is squeezed to half its volume at constant temperature, its density

When Paul compresses air with a tire pump, the temperature of the compressed air

Heat is thermal energy that flows from

One liter of water has a mass of

In a hydraulic-press operation, it is impossible for the

Pascal’s principle applies to

The density of air at room temperature is about 1.2 g/cm3. Estimate the mass of air inside a 0.80-m3 volume refrigerator. (There are 1 million cm3 in 1 m3.)

A rising balloon is buoyed up with a force equal to the