Question

1. A cord of mass 0.65 kg is stretched between two supports 8.0 m apart. If the tension in the cord is 140 N, how long will it take a pulse to travel from one support to the other?

2. A 50.0 Kg ball hangs from a steel wire 1.00 mm in diameter and 6.00 m long. What would be the speed of a wave in the steel wire?

3. The intensity of an earthquake wave passing through the earth is measured to be 3.0 x 106 J/m2 .s at a distance of 48 km from the source.

(a) What was its intensity when it passed a point only 1.0 Km from the source?

(b) At what rate did energy pass through an area of 2.0 m2 at 1.0 km?

4. If a cord is under a tension of 125 N and has mass per unit length 0.10 kg/m, what power is required to transmit 120 Hz transverse waves of amplitude 2.0 cm?

5. A 524 Hz longitudinal wave in air has a speed of 345 m/s.

(a) What is the wavelength?

(b) How much time is required for the phase to change by 900 at a given point in space?

(c) At a particular instant, what is the phase difference (in degrees) between two points 4.4 cm apart?

6. The velocity of waves on a string is 96 m/s. If the frequency of standing waves is 445 Hz, how far apart are the two adjacent nodes?

7. A guitar string is 90.0 cm long and has a mass of 3.16 g. From the bridge to the support post is 60.0 cm and the string is under a tension of 520 N. What are the frequencies of the fundamental and the first two overtones?

8. A 65 cm guitar string is fixed at both ends. In the frequency range between 1.0 and 2.0 KHz, the string is found to resonate only at frequencies 1.2, 1.5 and 1.8 kHz. What is the speed of travelling waves on this string?

9. A particular violin string plays at a frequency of 294 Hz. If the tension is increased 15%, what will the new frequency be?

10. The amplitude, angular frequency, and wave number of a transverse traveling wave are 4.00 m, 12.0 rad/s, and 4.00 rad/m, respectively. At what speed does it transfer energy from place to place?

11. Find the speed of the wave-function y(x,t) = 2/(x -3t^2) + 1

12. A microphone is placed at a distance of 3.40 m on the perpendicular bisector of a line joining two speakers that are separated by 3.00 m. By what distance should the microphone be moved parallel to the speakers so that the next maximum is heard? The frequency of sound produced by the speakers is 455 Hz.

Answer #1

Please upload remaining questions separately for the answers. Thank You:)

Two identical guitar strings are stretched with the same tension
between supports that are not the same distance apart. The
fundamental frequency of the higher-pitched string is 360Hz, and
the speed of transverse waves in both wires is 150 m/s. How much
longer is the lower-pitched string if the beat frequency is
4Hz?

A cord of mass 0.65 kg is stretched between two supports 8.0 m
apart. If the tension in the cord is 140N, how long will it take a
pulse to travel from one support to the other?

A guitar string of length 72.8 cm (which might be out of tune)
has been plucked and is producing a note of frequency 334 Hz. (a)
What is the speed of transverse traveling waves on this guitar
string? Give your answer in m/s. HINT: The note you hear is
produced by the vibrational mode of the string which has the
fundamental (lowest possible) frequency. Draw a picture of the
string vibrating in that mode and determine the wavelength of the...

A stretched string is 1.91 m long and has a mass of 20.9 g. When
the string oscillates at 440 Hz , which is the frequency of the
standard A pitch, transverse waves with a wavelength of 16.7 cm
travel along the string. Calculate the tension ? in the string.

Two small speakers are separated by a distance of 4 cm, as
shown. The speakers are driven in phase with a sine wave signal of
frequency 10 kHz. A small microphone is placed a distance 1.1 m
away from the speakers on the axis running through the middle of
the two speakers, and the microphone is then moved perpendicular to
the axis. Where does the microphone record the first minimum of the
interference pattern from the speakers as measured from...

Two small stereo speakers are 2 m apart and act as a double slit
interference experiment with sound waves. If the opposite wall of
the room is 6 m away and the sound frequency is 2 kHz, what is the
distance between the two interference maxima nearest the center of
the wall? Assume the speakers act as point sources of sound.

A string with both ends held fixed is vibrating in its third
harmonic. The waves have a speed of 193 m/s and a frequency of 235
Hz. The amplitude of the standing wave at an antinode is 0.380
cm.
a)Calculate the amplitude at point on the string a distance of
16.0 cm from the left-hand end of the string.
b)How much time does it take the string to go from its largest
upward displacement to its largest downward displacement at...

1.The human ear canal is about 2.3 cm long. If it is regarded as
a tube open at one end and closed at the eardrum, what is the
fundamental frequency around which we would expect hearing to be
most sensitive?
?kHz
2. An airplane traveling at half the speed of sound emits a
sound of frequency 5.30 kHz.
(a) At what frequency does a stationary listener hear the sound
as the plane approaches?
? kHz
(b) At what frequency does...

Two identical loudspeakers 2.20 m apart are emitting sound waves
into a room where the speed of sound is 340 m/s. Abby is standing
4.00 m in front of one of the speakers, perpendicular to the line
joining the speakers, and hears a maximum in the intensity of the
sound.
What is the lowest possible frequency of sound for which this is
possible?

A standing wave pattern is created on a string with mass density
μ = 3 × 10-4 kg/m. A wave generator with frequency f = 63 Hz is
attached to one end of the string and the other end goes over a
pulley and is connected to a mass (ignore the weight of the string
between the pulley and mass). The distance between the generator
and pulley is L = 0.68 m. Initially the 3rd harmonic wave pattern
is formed....

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