An interaction of systems allows for the body to warm itself when it is cold. Which processes help the body warm up when it is cold? Select three options.

Which statement is best supported by the information in the chart? wave y is moving the fastest. wave x is moving the fastest. all of the waves are moving at the same speed. all of the waves have the same value of wavelengths per second.

Tall pacific coast redwood trees can reach heights of about 100 m. if air drag is negligibly small, how fast is a sequola cone moving when it reaches the ground f it dropped from the top of a 100 m tree?

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?