What is the angle of reflection?
a. the angle the reflecting surface makes with the ground
b. the angle that the incident ray makes with a line drawn perpendicular to the reflecting surface
c. the angle that the reflected ray makes with a line drawn perpendicular to the reflecting surface
d. the angle that the reflected ray makes with the incident ray

Which is not a step in the rock cycle?

Aball tossed vertically upward from the ground next to a building passes the bottom of a window 1.8 s after being tossed and passes the top of the window 0.20 s later. the window is 2.0 m high from top to bottom. what was the ball's initial velocity? the unit vector j^ is directed upward. how far is the bottom of the window from the launch position? how high does the ball rise above the launch position?

Several mountains together form a mountain . a few of these combined form a mountain system. several systems combined form a mountain , which can stretch thousands of miles in length.