One explanation for how the receiver of a passed football knows to speed up or slow down to catch the ball is that he keeps the tangent of the angle of the ball’s velocity vector constant. Explain.

Which type of circuit is becoming more common in residential electrical design and construction? a. hazardous-area circuit b. three-phase circuit c. 480-volt circuit d. communication circuit

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.

Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?