ACR 101 Unit 2

A solid material exerts a pressure or force ____.

• downward only
• in all directions
• outward and downward
• outward only

A liquid material exerts a pressure or force ____.

• outward and downward
• in all directions
• downward only
• outward only

A vapor material exerts a pressure or force ____.

• in all directions
• outward and downward
• downward only
• outward only

If the temperature remains constant and the volume that a gas occupies increases, the pressure will ____.

• decrease
• increase
• remain the same
• cannot be determined from the information given

The volume of gas varies inversely with the absolute pressure, provided the temperature remains constant. This is called ____.

• Boyle's Law
• Charles' Law
• Tom's Law
• Dalton's Law

At a constant pressure, the volume of a gas varies as to the absolute temperature and at a constant volume the pressure of the gas varies directly with the absolute temperature. This is known as ____.

• Charles' Law
• Boyle's Law
• Tom's Law
• Dalton's Law

The total pressure of a confined mixture of gases is the sum of the pressures of each of the gases in the mixture. This is known as ____.

• Dalton's Law
• Boyle's Law
• Tom's Law
• Charles' Law

A helicopter is lifting an 800-pound unit at a rate of 200 feet per minute. How many horsepower of work energy is the helicopter using in the process?

• 4.848 hp.
• 3.863 hp.
• 4.517 hp.
• 5.209 hp.

One watt of electrical energy is equal to ____.

• 3.413 Btu/h
• 3.1416 Btu/h
• 3.3416 Btu/h
• 3.3146 Btu/h

How many watts of electrical power are equal to 1 horsepower?

• 746
• 33000
• 15000
• 660