5. An electron is moving north in a region where the magnetic field is south. The magnetic force
exerted on the electron is:
A. Zero
B. up
C. down
D. east
E. west

Which statement correctly describes the relationship between frequency and wavelength?

Aball horizontally thrown from a cliff at 8m/s

Abaseball is thrown from the outfield toward the catcher. when the ball reaches its highest point, which statement is true? (a)its velocity is not zero, but its acceleration is zero. (b) its velocity and its acceleration are both zero. (c) its velocity is perpendicular to its acceleration. (d) its acceleration depends on the angle at which the ball was thrown. (e) none of the above statements are true.