Two uniform solid cylinders, each rotating about its central (longitudinal) axis, have the same mass of 2.65 kg and rotate with the same angular speed of 415 rad/s, but they differ in radius. What is the rotational kinetic energy of (a) the smaller cylinder, of radius 0.308 m, and (b) the larger cylinder, of radius 0.618 m

When considering gravity acceleration and the force of acceleration, what must be true? a. the direction of acceleration must be perpendicular to the direction of the force. b. the direction of the force and the direction of acceleration must be the same as each other. c. the direction of the force and the direction of acceleration must be opposite of each other. d. the mass of the body must be the same as the acceleration of the body.

The energy of a photon was found to be 3.38 × 10–19 j. planck’s constant is 6.63 × 10–34 j • s. which color of light corresponds to this photon?

What’s #16 asking me and how do i solve it?