What's an air column

A boy on a bicycle rides at 21.1 m/s a distance of 87.9 m. How long does it take?

A 50-kg box is placed in the bed of a truck. the coefficient of static friction between the box and the truck bed is 0.54.

A car traveling 20 m/s to the north collides with a car traveling 10 m/s to the south. Each car has a mass of 800 kg. If the system is defined as the two cars, what is the change in momentum of the system due to the collision? A. 24,000 kg. m/s B.

Which compound should require the highest temperature to melt? LiF, NaF, LiCl, NaCl

The amount of sunlight received at Earth's surface fluctuates more at the poles than the equator. a. True b. False

What is the most advanced life form on earth

Which EM wave is about the size of humans?

Describe how the Catapult works?

Newton's third law of motion states that the force pair acting on different objects consist of two forces that

While working on her science fair project Venus connected a battery to a circuit that contained a light bulb. Venus decided to change the light bulb to a higher resistance, but she wanted to keep the current the same.