One 4. A ray of light traveling through the air has an angle of incidence of
30.00 on a block of glass and an angle of refraction of 20.09.
Calculate the index of refraction for this block of glass.

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

Do you agree with scientist’s prediction about the warming of alaska and other polar regions?

What is the final velocity of the initial velocity of 25 and -50?