How much refrigerant must a system contain

An object that gives off electromagnetic waves based on it's temperature demonstrates which phenomenon

What can be calculated if you know the distance that an object travels in one unit of time?

A 1000-kg car moving at 10 m/s brakes to a stop in 5 s. the average braking force is

If an object is thrown in an upward direction from the top of a building 160 ft. high at an initial speed of 21.82 mi/h., what is its final speed when it hits the ground? (Disregard wind resistance.

Why doesn't an object thrown in an upward direction fall the same distance in each time interval as it descends toward Earth?

Power=170 watts time=20 seconds

What is the charge of alpha, beta and gamma rays?

A pair of scissors is a complex machine. what simple machines make up a pair of scissors?

Methane gas absorbs red light, and methane clouds reflect blue light, giving Uranus and Neptune their distinctive blue colors. Why do Uranus and Neptune have methane clouds, but Jupiter and Saturn do not

A car traveled 1025 kilometers from El Paso to Dallas in 13.5 hours. What was it's average velocity?