Why do things burn up when they enter the atmosphere?

A 20 kg rock is a 5 meters above ground. how much energy is stored gravitationally?

In your own words describe hot spot and the formation of the Hawaiian island

What is the force needed to accelerate a sled with a mass of 2 kg at a rate of 3.0 m/s2 A 2.0 B 1.5 C 3.0 D 6.0

A human being can be electrocuted if a current as small as 55 mA passes near the heart. An electrician working with sweaty hands makes good contact with the two conductors he is holding.

The lowest note on the piano has the longest string to vibrate. How does the lowest note compare if you consider the column of air that is vibrating in test tubes or bottles?

A device that changes thermal energy into mechanical energy

You and your roommate are moving to a city 380 mimi away. Your roommate drives a rental truck at a constant 55 mi/hmi/h, and you drive your car at 65 mi/hmi/h. The two of you begin the trip at the same instant.

Which planet is 92,897,000 miles from the sun?

Stretching or drawing a solid into a wire is which of the following physical properties A) ductility B) solubility C) malleability D) conductivity

How well does the infographic ""Plastics in the Ocean"" present a solution to the problem it describes?