Question

4. Each pair of adjacent nodes, or each pair of adjacent antinodes, is separated by a distance of a. µ b. L c. λ/2 d. λ

5. Convert µ = 2.56 x 10-3 g/cm to SI units. a. 2.56 x 102 kg/m b. 2.56 x 10-2 kg/m c. 2.56 x 10-3 kg/m d. 2.56 x 10-4 kg/m

6. During the experiment, you measure a length of (66.0 ± 2.0) cm for four useable loops of the standing wave. Solve for the wavelength of the standing wave, including uncertainty. a. 33.0 ± 1.0 cm b. 264.0 ± 8.0 cm c. 132.0 ± 4.0 cm d. 132.0 ± 2.0 cm

7. During the lab experiment, you put 662 g on a 50-g weight hanger, and hang it off the end of a string. What is the tension in the string in SI units (N)? a. 6978 N b. 649 N c. 712 N d. 6.978 N e. 0.649 N

8. You establish a standing wave pattern by hanging 0.102 N off the edge of the table (over the pulley). If µ = 2.56 x 10-4 kg/m, what is the velocity of the wave traveling along the string? a. 20.0 m/s b. 39.8 m/s c. 6.31 m/s d. 390. m/s e. None of these.

Answer #1

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A distance of 5.60 cm is measured between two adjacent nodes of
a standing wave on a 28.0 cm-long string.
HINT
(a)
In which harmonic number n is the string vibrating?
(b)
Find the frequency (in Hz) of this harmonic if the string has a
mass of 1.25 ✕ 10−2 kg and a tension of 885 N.
Hz

1. A cord of mass 0.65 kg is stretched between two supports 8.0
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1. In an experiment to study standing waves, you use a string
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µ .
You make a plot with L on the y-axis and √ T on the x-axis, and
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A thin taut string of mass 5.00 g is fixed at both ends and
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PART A: Determine which harmonic corresponds to the 630 Hz
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PART B: Find the linear mass density of this string. Express
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?5 = m
(b) What is the wave number?
k5 = m?1
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A wave on a string is described by
y(x,t)=( 4.0 cm
)×cos[2π(x/( 1.2 m )+t/( 0.30 s ))] ,
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What is the wave speed? v
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Part C
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Part D
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1. A wave train is traveling along a string. Seven waves pass by
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b) the tension in the string if it has a length of 1.68 m and a
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(b) What is the vertical position of an element of the string at
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_______m
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A guitar string vibrates in its fundamental mode, with nodes at
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a
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b
a)...

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