Let wheel 1 rotate at a constant angular speed ω1. find the ratio ω1ω2 of the angular speed of wheel 1 to the angular speed of wheel 2.

A150 w lamp emits light of wavelength 590 nm uniformly in all directions. what is the photon flux (photons per unit area per unit time) on a small screen at a distance 2.3 m from the lamp? assume the photons are uniformly distributed over the surface of a sphere of radius 2.3 m.

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter

Often called simply "velocity," this is the velocity of an object at a particular moment in time.