Read this sentence:"The name Pangaea is derived from the Ancient Greek words 'pan' meaning 'entire,' and 'Gaia' meaning 'Earth.'"As used in this sentence, the word derived means

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

The rocket is fired vertically and tracked by the radar station shown. when θ reaches 66°, other corresponding measurements give the values r = 32700 ft, r¨ = 85 ft/sec2, and θ˙ = 0.019 rad/sec. calculate the magnitudes of the velocity and acceleration of the rocket at this position.

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?