The transfer of heat by the movement of a heated fluid is

The emission of energy from the surface of all bodies is

Archimedes’ principle states that

The speed of sound

A weight of sixty pounds is supported by pulleys which are supported by four ropes.  How much force must be applied to move the weight?

If the pressure of a dry gas is reduced by one third, the volume will

Pascal’s Law states that

In a hovering helicopter equipped with a tail rotor, directional control is maintained by

The elevators of a conventional airplane are used to provide rotation about the

‑15° Centigrade is how many degrees Fahrenheit?   °F = (°C x 1.8) + 32