When light passes from glass n=1.55 to water n=1.33 it ? a) continues in a straight line without bending
b) bends toward the normal to the boundary
c) bends away from the normal to the boundary
d) travels in a curved path after it crossed the boundary

The force will determine the acceleration.

The x-coordinate of a particle in curvilinear motion is given by x = 3.1t3 - 4.9t where x is in feet and t is in seconds. the y-component of acceleration in feet per second squared is given by ay = 2.3t. if the particle has y-components y = 0 and vy = 5.0 ft/sec when t = 0, find the magnitudes of the velocity v and acceleration a when t = 1.8 sec. sketch the path for the first 1.8 seconds of motion, and show the velocity and acceleration vectors for t = 1.8 sec. answers: v = ft/sec a = ft/sec2

Most short-period comets do not have randomly oriented orbits because