It is possible to detect Doppler shifts due to light on each side of a rapidly spinning star. Suppose it is seen that a nearby star, relatively stationary to us, is blueshifted in light on one side of the star and redshifted in the light from the other side. Suppose a star of radius 
km has light shifted from 525 nm to 527 nm on one side and to 523 nm on the other. What is the rotational period of the star?
A. 34 h
B. 32 h
C. 24 h
D. 16 h
D. 16 h
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A uniformly charged rod (length = 2.0 m, charge per unit length = 3.0 nC/m) is bent to form a semicircle. What is the magnitude of the electric field at the center of the circle?
a. 64 N/C b. 133 N/C c. 48 N/C d. 85 N/C e. 34 N/C
A straight wire is bent into the shape shown. Determine the net magnetic force on the wire
a.
Zero
b.
IBL in the +z direction
c.
IBL in the ?z direction
d.
1.7 IBL in the +z direction
e.
1.4 IBL in the ?z direction
In the two-slit experiment, monochromatic light of frequency 5.00 × 1014 Hz passes through a pair of slits separated by 2.20 × 10-5 m
(c = 3.00 × 108 m/s) (a) At what angle away from the central bright spot does the third bright fringe past the central bright spot occur? (b) At what angle does the second dark fringe occur?
In a polarized plug, the large slit connects to the hot side and the small slit connects to the neutral, or ground, side
Indicate whether the statement is true or false