A parallel beam of light makes an angle 30º with the surface of a glass plate having refractive index of 1.50. (a) What is the angle between the refracted beam and the surface of the glass? (b) What should be the angle of incidence φ with this plate for the angle of refraction φ/2 ?

Identify two factors that determine the rate of stream erosion

Which composition of water moves to begin a deepwater current?

Aball is thrown from the top of a building with an initial velocity of 21.9 m/s straight upward, at an initial height of 51.6 m above the ground. the ball just misses the edge of the roof on its way down, as shown in the figure. (a) determine the time needed for the ball to reach its maximum height. (b) determine the maximum height. (c) determine the time needed for the ball to return to the height from which it was thrown, and the velocity of the ball at that instant. (d) determine the time needed for the ball to reach the ground. (e) determine the velocity and position of the ball at t = 5.35 s.