The slope of the position versus time graph represents the object’s acceleration displacement position velocity

The amount of potential energy possessed by an elevated object is equal to what?

What is an electric motor? explain its operation. 2-3 sentence

Which of the following conditions lead you to see an absorption line spectrum from a cloud of gas in interstellar space? the cloud is extremely hot. the cloud is visible primarily because it reflects light from nearby stars. the cloud is cool and lies between you and a hot star. the cloud is cool and very dense, so that you cannot see any objects that lie behind it.