Suppose a soccer ball is kicked from the ground at an angle 20.0º above the horizontal at 8.00 m/s. The initial y-velocity is determined to be 2.74 m/s. If the ball lands at the same height at which it was kicked, what is the value of Δy for the ball?

Erosion of the beach is normally a slow process. however, in certain situations, large chunks of shore may wash out to sea. what could cause this to happen?

The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.

With the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 1.90