Homework Answers
Fully constructive interference between two sinusoidal waves occurs only if
they are in phase
and they are travelling in same direction
if they are travelling in differnet direction (ooposite directions)
then
for constructive interference, they need to be in phase with their maximas aligned as well
hence
option c is the answer
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frequency-independent amplitude that are in phase.
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b)
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Learning Goal:
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Two small loudspeakers emit pure sinusoidal waves with
frequency-independent amplitude that are in phase.
a ) At the frequencies 0.63 kHz, 1.91 kHz, and 3.19 kHz we have
constructive interference at point P.
b)
At the frequencies 1.27 kHz, 2.55 kHz, and 3.82 kHz the sound
at point P is very soft.
c)
At the frequencies 1.27 kHz, 2.55 kHz, and 3.82 kHz the sound
at point P is loud.
d)
The intensity of the sound at point P does...
Three sinusoidal waves of the same frequency travel along a string in the positive direction of an x axis. Their amplitudes are A, A/2, and A/3, and their phase constants are 0,T/2 and . Find: a. the amplitude and b. the phase constant of the resultant wave c. Plot the wave form of the resultant wave at t 0 and discuss its behavior as t increases.
Learning Goal:
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