Consider a wire in a magnetic field, as shown in the following figure, with a current flowing downward through it. What will happen to the wire?
a.
The wire will be forced toward the north pole.
b.
The wire will be forced perpendicular to the plane of the magnetic field, into the page.
c.
The wire will be forced perpendicular to the plane of the magnetic field, out of the page.
d.
The current will cease flowing.
e.
The wire will be forced toward the south pole.
c
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If you double the spring constant of a harmonic oscillator, the oscillation frequency does what?
A. Decreases by a factor of 2.
B. Decreases by a factor of 
.
C. Does not change.
D. Increases by a factor of .
E. Increases by a factor of 2.
F. Changes by some other factor (specify).
In globular clusters, the brightest stars will be:
A) massive blue main sequence stars. B) red supergiants. C) T Tauri stars. D) blue stragglers. E) planetary nebulae.
A blueberry will look black when illuminated with
A) red light. B) yellow light. C) magenta light. D) cyan light. E) none of the above
The maximum torque is exerted on a current loop when the plane of the loop is at what angle to the magnetic field?
A) 45.° B) 0.° C) 135.° D) 90.° E) -45.°