If there were a great migration of people toward the earth's equator, would the length of the day get longer because of conservation of angular momentum?

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

What are igneous intrusions and extrusions

Find v1, the speed of the fluid in the left end of the main pipe. express your answer in terms of h1, h2, g, and either a1 and a2 or γ, which is equal to a1a2.