Given the ideas presented here about how galaxies form, would you expect to find a giant elliptical galaxy in the local group? why or why not? is there in fact a giant elliptical in the local group?

Yvette hangs a 2.4kg bird feeder in the middle of a rope tied between two trees. the feeder creates a tension of 480 n in each side of the the rope.

While standing outdoors one evening, you are exposed to the following four types of electromagnetic radiation: yellow light from a sodium street lamp, radio waves from an am radio station, radio waves from an fm radio station, and microwaves from an antenna of a communications system. rank these type of waves in terms of increasing photon energy.

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?