The expansion of the universe is detected: a) inside the milky way d) in globular clusters b) inside the local group e) none of the above c) in the solar system

Ineed the answer to question 1 , i’m desperate

Asap and show ! a 14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.

In a series circuit the __ is the same at every point