Fundamentals of Physics Extended
10th Edition
ISBN: 9781118230725
Author: David Halliday, Robert Resnick, Jearl Walker
Publisher: Wiley, John & Sons, Incorporated
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Chapter 16, Problem 95P
To determine
To find:
a) Standing Wave Ratio (SWR) for the total reflection.
b) Standing Wave Ratio (SWR) for no reflection.
c) R (reflection coefficient) in percent for SWR=1.50.
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y!
72 Two sinusoidal 120 Hz
waves, of the same frequency
and amplitude, are to be sent in
the positive direction of an x axis
that is directed along a cord un-
der tension. The waves can be
10
20
sent in phase, or they can be
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sulting wave versus the distance of the shift (how far one wave is
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(d) the correct choice of sign in front of w?
Shift distance (cm)
Figure 16-47 Problem 72.
(uu)
95 A continuous traveling wave with amplitude A is incident on
a boundary. The continuous reflection, with a smaller amplitude B,
travels back through the incoming wave. The resulting interference
pattern is displayed in Fig. 16-51. The standing wave ratio is
defined to be
A + B
А — В
SWR
The reflection coefficient R
is the ratio of the power of
the reflected wave to the
Ana
Amin
Am
max
ах
power of the incoming wave
and is thus proportional to
the ratio (BIA). What is the
SWR for (a) total reflection
and (b) no reflection? (c) For SWR = 1.50, what is R expressed as a
percentage?
Figure 16-51 Problem 95.
Figure 17-37 shows a transmitter and receiver of waves con- tained in a single instrument. It is used to measure the speed u of a target object (idealized as a flat plate) that is moving directly toward the unit, by analyzing the waves reflected from the target. What is u if the emitted frequency is 18.0 kHz and the detected frequency (of the returning waves) is 22.2 kHz?
Chapter 16 Solutions
Fundamentals of Physics Extended
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