Consider light energy that is momentarily absorbed in glass and then re-emitted. Compared to the absorbed light, the frequency of the re-emitted light is
A) considerably less.
B) slightly less.
C) the same.
D) slightly more.
E) considerably more.
Answer: C
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Wave Characteristics: An FM radio station broadcasts at 96.7 MHz. What is the wavelength of the radio wave used for this broadcast? (c = 3.0 × 108 m/s)
Fill in the blank(s) with the appropriate word(s).
The frequency of a periodic wave is 340 Hz. The period of the vibration motion of the wave is
A. 2.56 milliseconds. B. 2.94 milliseconds. C. 3.55 milliseconds. D. 3.94 milliseconds. E. 4.25 milliseconds.
Consider the field lines of the electric dipole in this diagram, relative to the w-axis and the z-axis. 
In which direction does the electric field point where the two axes intersect?
A. 45° up and to the right, parallel to the z-axis: 
B. 45° down and to the left, parallel to the z-axis: 
C. 45° down and to the right, parallel to the w-axis: 
D. 45° up and to the left, parallel to the w-axis: 
What are the magnitude and direction of the electric field at a distance of 1.50 m from a 50.0-nC charge?
A) 20 N/C away from the charge B) 20 N/C toward from the charge C) 10 N/C away from the charge D) 200 N/C away from the charge E) 200 N/C toward from the charge