What percentage of sun-like stars exists in multiple-star systems? a. approximately 45% b. more than half c. all of them d. about 25%

The earth is constantly spinning on its axis, like you might spin a basketball on your finger. it is this spinning of the earth that causes

Anybody wanna ? (picture included? )

Within a pendulum, as potential energy decreases, energy increases. a. heat b. kinetic c. frictional d. gravitational