An accelerating voltage of 2.63 103 V is applied to an electron gun, producing a beam of electrons originally traveling horizontally north in vacuum toward the center of a viewing screen 36.2 cm away.
(a) What is the magnitude of the deflection on the screen caused by the Earth's gravitational field?
m

(b) What is the direction of the deflection on the screen caused by the Earth's gravitational field?
up
down
east
west

(c) What is the magnitude of the deflection on the screen caused by the vertical component of the Earth's magnetic field, taken as 20.0 µT down?
mm

(d) What is the direction of the deflection on the screen caused by the vertical component of the Earth's magnetic field, taken as 20.0 µT down?
north
south
east
west

(e) Does an electron in this vertical magnetic field move as a projectile, with constant vector acceleration perpendicular to a constant northward component of velocity?
Yes
No

(f) Is it a good approximation to assume it has this projectile motion?
Yes
No