A stretched string is observed to vibrate in three equal segments when driven by a 480-Hz oscillator. What is the fundamental frequency of vibration for this string?
a. 480 Hz
b. 320 Hz
c. 160 Hz
d. 640 Hz
e. 240 Hz
c
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Chromatic aberration is absent in
A) converging lenses B) diverging lenses. C) front surface plane mirrors.
The diagram below shows the position of a long straight wire perpendicular to the page and a set of directions labeled A through H.
When the current in the wire is directed up out of the page, the direction of the magnetic field at point P is
A. A. B. B. C. C. D. D. E. E.
According to the special theory of relativity, while traveling at very high speed your pulse rate
A) increases. B) decreases. C) remains unchanged.
Galileo's observations of the entire phase cycle of Venus proved that Ptolemy's epicycles could not be correct in keeping Venus between us and the Sun
Indicate whether the statement is true or false