(i) a space shuttle releases a satellite into a circular orbit 780 km above the earth. how fast must the shuttle be moving (relative to earth’s center) when the release occurs?

Explanation:

Given

shuttle is at distance of 780 km above earth surface

total distance

radius of earth

acceleration due to gravity

where

Net force on shuttle is

Centripetal acceleration is given by

Force will Provide centripetal acceleration

answer: d. a cme increases the amount of energy in the solar wind

explanation:

coronal mass ejections, also called cmes, are large clouds of plasma and magnetic field that erupt from the sun. only when the cloud is aimed at earth will the cme hit earth and therefore cause impacts. high-speed solar wind streams come from areas on the sun known as coronal holes.

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods