Thinking of a vibrating string with two fixed ends, try to explain in your own words, why only specific frequencies create a standing wave.

Aneutron and a proton combine to form a nucleus. why does the mass of the nucleus differ from the sum of the masses of the individual nucleons?

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.

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z