If a light ray strikes a surface with an angle of incidence of 17°, what is the angle between the ray
and the surface?
a 163°
b 73°
C 107°
d 90°

Abar magnet cut in half will form a total ofpoles.a)fourb)eightc)two

Greg drew a diagram to compare two of the fundamental forces. which labels belong in the areas marked x, y and z? gravitational force electromagnetic force x. attractive y repulsive z: infinite range x: infinite range y attractive z. repulsive x. always attractive y: infinite range z: attractive or repulsive x. attractive or repulsive y infinite range z: always attractive

A20 cm long spring is attached to a wall. the spring stretches to a length of 22 cm when you pull on it with a force of 100 n. what is the spring constant