Electromagnetic radiation is a kind of that behaves like a(n) as it travels through space.

Who was the first scientist to measure speed as distance over time?

Ways that industry and agriculture use physical properties to separate substances

Aplane flying horizontally at an altitude of 1 mile and a speed of of 500mih passes directly over a radar station. find the rate at which the distance from the plane to the station is increasing when it is 2mi away from the station.