What is the acceleration of an object in free fall near Earth's surface? A. 4.9 m/s2
B. 1 m/s2
C. 0.98 m/s2
D. 9.8 m/s2

Several mountains together form a mountain . a few of these combined form a mountain system. several systems combined form a mountain , which can stretch thousands of miles in length.

An electromagnet is a device in which moving electric chargers in a coil of wire create a magnet.whats one advantage of using electromagnetic in devices

The solid that is formed and usually sinks to the bottom of a solution is the