When discussing the motion of waves, how is a medium defined? Please write why beside A. a substance that creates a wave
B. a substance that damages a wave
C. a substance that a wave moves through
D. a substance that blocks a wave’s movement

If you mix chlorine lithium and nickel together which two elements would be the most reactive

The 5-kg cylinder is initially at rest when it is placed in contact with the wall b and the rotor at a. if the rotor always maintains a constant clockwise angular velocity v = 6 rad> s, determine the initial angular acceleration of the cylinder. the coefficient of kinetic friction at the contacting surfaces b and c is mk = 0.2.

More solar radiation is absorbed by earth’s surface than by