For Gear A and Gear B to mesh properly in the figure above __________.

A. They must be the same size.

B. They must turn at different rates.

C. They must both turn in the same direction.

D. Their teeth must be of equal size.

33,000 foot-pounds of work done in one minute is called ___________.

A. a job for an enlisted soldier

B. one horsepower

C. 330 psi

D. meaningful force

The try-cock in the schematic above measures ___________.

A. temperature of water

B. pressure of water

C. pressure of steam buildup

D. level of water

Presume that Pulley C is rotating clockwise.

What direction will Pulley A rotate?

A. Clockwise

B. Counterclockwise

C. Insufficient information to answer

D. Pulley A will not rotate

Kinetic energy is __________.

A. energy stored in chemicals, such as in a battery.

B. energy in moving electrons, as in an electric current.

C. energy in a moving object.

D. energy that can be released under certain conditions.

When meshing or interlocking gears have different numbers of teeth, __________.

A. relative speeds depend on the speed of the drive aide for both

B. both gears will rotate at the same speed

C. the gear with more teeth will rotate fester than the gear with fewer teeth

D. the gear with fewer teeth will rotate fester than the gear with more teeth

If you drop something, the force acting on it is ____________.

A. gravity

B. friction

C. elastic recoil

D. equilibrium

What mechanical motion principle do the brakes in a car or on a bicycle use?

A. friction

B. centrifugal force

C. momentum

D. acceleration

What is Newton's Third Law of Motion?

A. What goes up must come down.

B. For every action, there is an equal and opposite reaction.

C. Reactions are a result of large actions.

D. Mass cannot be destroyed.

A hydraulic jack performs the task of moving objects by __________.

A. utilizing oil; because oil cannot be compressed, pressure is placed upon the oil, resulting in a lifting motion

B. pressing together two interfacing parts to increase height

C. using a pulley system to lift items

D. using a corkscrew-like effect to function