An optical fiber is made of clear plastic (n = 1.50). light travels through the fiber at angles ranging from 40° to 55°. what is the measurement of the critical angle of this fiber?
a. 42.3°
c. 41.8°
b. 44.6°
d. 47.7°

Which are examples of projectile motion? choose all that apply a. a soccer ball rolling across the ground in the northeast direction b. a car turning a corner, so it is heading south c. a javelin flying through the air d. a tennis ball lobbed over the net

The respiratory system removes oxygen and water from the body. select the best answer from the choices provided t f

Which graph represents motion with an object with positive velocity that is located at a position of 3 meters at a time of 0 seconds? a) a b) bb eliminate c) c d) d