The prism shown in the figure is placed in air ( = 1) in the position shown. A light beam is incident on the left side (side AB) of the prism. The index of refraction of the prism for the
frequency of light used is p = 1.5.
a) Sketch in a diagram the direction of the light ray when it comes out of the other side
(side BC) of the prism. Justify your answer
b) Find the angle between the light ray and the dashed line when it comes out of side BC.
c) Find the angle that the corner B of the prism must be to have total internal reflection of
the light ray at side BC

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 740 n/m. it is initially at rest on an inclined plane that is at an angle of theta= 26 with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is uk = 0.17. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. the block's initial mechanical energy is 9.472 j.b. if the spring pushes the block up the incline, what distance l in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.