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PHYS-91; Multiple Choice: For the hydrogen atom, which series describes electron transitions to the N=1 orbit, the lowest energy electron orbit? Is it the:
w) Lyman series x) Balmer series y) Paschen series z) Pfund series
PHYS-91; Multiple Choice: Electric current may be expressed in which one of the following
units?
w) coulombs/volt
x) joules/coulomb
y) coulombs/second
z) ohms/second
HYS-91; Short Answer: In the SI system of measure, what is the unit of capacitance?
PHYS-91; Multiple Choice: A Newton is equal to which of the following?
w) kilogram-meter per second
x) meter per second squared
y) kilogram-meter per second squared
z) kilogram per meter-second
PHYS-91; Multiple Choice: For an object moving in uniform circular motion, the direction of the
instantaneous acceleration vector is:
w) tangent to the path of motion
x) equal to zero
y) directed radially outward
z) directed radially inward
PHYS-91; Short Answer: A boy is standing on an elevator which is traveling downward with a
constant velocity of 30 meters per second. The boy throws a ball vertically upward with a
velocity of 10 meters per second relative to the elevator. What is the velocity of the ball,
MAGNITUDE AND DIRECTION, relative to the elevator shaft the instant the boy releases the
ball?
PHYS-91; Multiple Choice: The work done by a friction force is:
w) always positive
x) always negative
y) always zero
PHYS-91; Multiple Choice: As defined in physics, work is:
w) a scalar quantity
x) always a positive quantity
y) a vector quantity
z) always zero
