A ball is traveling horizontally when it clears a volleyball net that is 1.7m high. What maximum {horizontal) speed (in m/s) can it have if it is to fall within 5 meters of the net? Please input your answers as positive values with two decimal places.

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.

(**i would really appreciate if this was answered soon** ) which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

Why do astronauts in the space shuttle weigh less?