Four forces are exerted on an object as shown below: In which direction will the object move?
A. Up
B. Down
C. Left
D. Right

The number at the end of an isotope’s name is the number.

Calculate the frequency of a wave in a spring toy. the wave has a speed of 1.1 meters per second and a wavelength of 0.1 meters. *

Why does earth rotate? because earth is formed from cold gases collapsing due to gravity because the matter in the nebula that formed earth was spinning because earth forms more than 99% of the mass of the solar system because the hydrogen atoms inside the nebula fused to form helium