If a light ray is traveling from air into a glass prism, how will the direction of the light ray change after it enters the prism?
a. the light ray will be refracted toward the normal.
b. the light ray will be refracted away from the normal.
c. the light ray will be refracted perpendicular to the normal.
d. the light ray will be refracted along the normal.
e. the light ray will not be refracted.

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 790 n/m. it is initially at rest on an inclined plane that is at an angle of 28 degrees with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is k = 0.14. in the initial position, where the spring is compressed by a distance of a = 0.18 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. 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.

What is friction? how does it affect the motion of an object?

What organization and environment is described above?