Does partial reflection and refraction occur when light travels from a slow to fast medium? explain.

Write the equation for momentum, first using symbols for the variables, then using words for the variables.

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.

What is the scientific definition of energy that relates to work