Anna used a rock to drive a peg into the ground to put up her tent. if the rock applied a 9.5 n force in 0.50 s, what is the impulse on the peg? 4.8 n • s 9.5 n • s 10 n • s 19 n • s

The two required components for a generator are

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.

How can a cyclist's acceleration change even if its velocity remains constant?