What would be the angular diameter of the milky way as seen by an alien astronomer in the virgo cluster at a distance of 18 mpc? (note: the diameter of the mikly way is 30 kpc.)
a = arc minutes

Aregion of space in which a measurable gravitational force is indicated by the force exerted on a test mass is called

If a balloon is taken outside on a very cold day, what will occur?

Avolcano erupts next to a grassland area in a valley. a. describe three ways in which material released by the volcano could impact the grassland area. b. describe three ways in which the grassland ecosystem could recover after a volcanic eruption.