Force on a Moving Charge: A proton, moving west, enters a magnetic field. Because of this magnetic field the proton curves upward. We may conclude that the magnetic field must have a component
A. towards the west.
B. towards the east.
C. towards the south.
D. towards the north.
E. downward.
Answer: C
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In a good insulator, electrons are usually
a. Not moving at all. b. Free to move around after an impurity has been added. c. Free to move around. d. Tightly bound in place. e. Semi-free to move around.
A string with a fixed frequency vibrator at one end is undergoing resonance with 4 antinodes when under tension T1 . When the tension is slowly increased the resonance condition disappears until tension T2 is reached, there being no resonances occurring between these two tensions. How many antinodes are there in this new resonance?
a. 3 b. 4, since all resonances in this situation have the same number of nodes c. 5 d. 2, since resonances only involve whole wavelengths e. 6, since resonances only involve whole wavelength
Exclusion Principle: What is the maximum number of electrons that can occupy the g subshell?
A. 10 B. 14 C. 18 D. 22
The actual depth of a shallow pool 1.00 m deep is not the same as the apparent depth seen when you look straight down at the pool from above. How deep (in cm) will it appear to be? (nwater = 1.33.)
a. 133 b. 75.2 c. 90.6 d. 117 e. 100