White light moves through a prism and separates into colors in the following order: red, orange, yellow, green, blue, and violet. which of the following choices correctly describes why the violet ray is at the bottom while the red ray is at the top?
a. red and violet light move at the same speed but have different frequencies, so they refract at different angles due to their different frequencies.
b. red and violet light move at the same speed but have different wavelengths, so they refract at different angles due to their different wavelengths.
c. red light moves slowest through glass while violet light moves fastest through glass compared to other visible light. so violet and red refract at different angles.
d. violet light moves slowest through glass while red light moves fastest through glass compared to other visible light. so violet and red refract at different angles.

An charge with mass m and charge q is emitted from the origin, (x,y)=(0,0). a large, flat screen is located at x=l. there is a target on the screen at y position y(h), where y(h) > 0. in this problem, you will examine two different ways that the charge might hit the target. ignore gravity in this problem. 1.assume that the charge is emitted with velocity v(0) in the positive x direction. between the origin and the screen, the charge travels through a constant electric field pointing in the positive y direction. what should the magnitude e of the electric field be if the charge is to hit the target on the screen? express your answer in terms of m, q, y(h), v(0), and l. 2.now assume that the charge is emitted with velocity v(0) in the positive y direction. between the origin and the screen, the charge travels through a constant electric field pointing in the positive x direction. what should the magnitude e of the electric field be if the charge is to hit the target on the screen? express your answer in terms of m, q, y(h), v(0), and l.