Question

***I NEED ALL THE QUESTIONS ANSWERS***

1.When the period of oscillation decreases, the (a) amplitude increases, (b) frequency increases, (c) wavelength increases, (d) frequency decreases.

2.Sound is (a) transverse wave, (b) longitudinal wave, (c) standing wave, (d) magnetic wave.

3.When two waves interfere, which of the following add? (a) wavelength, (b) frequency, (c) phase, (d) amplitude.

4.The wave speed is equal to (a) the ratio of the frequency and wavelength, (b) the ratio of the frequency and the period, (c) the product of the frequency and wavelength, (d) the product of the period and wavelength.

5.The number of oscillations per time is given by the (a) wave speed, (b) wavelength, (c) frequency, (d) nodes.

6.When two waves of equal amplitude and wavelength traveling in opposite directions interfere, they (a) produce a wave of greater strength, (b) annihilate each other, (c) produce a standing wave, (d) none of these.

7.Points of maximum amplitude in a standing wave are (a) out of phase, (b) overtones, (c) antinodes, (d) pitch.

8.If an oscillation has a frequency of 1 Hz, it has a period of (a) 2seconds, (b) 1/2seconds, (c) 1second, (d) 10seconds.

9.The propagation of energy through a medium or space from a disturbance is a (a) wave, (b) vibration, (c) oscillation, (d) translational motion.

10.The oscillations are parallel to the wave motion in (a) water waves, (b) light waves, (c) sound waves, (d) resonant strings.

11.Points of zero amplitude on a string or rope where standing waves are present are called (a) crests, (b) antinodes, (c) period, (d) nodes.

12.A sound with a frequency of 200 Hz is in region of the sound frequency spectrum (a) infrasonic, (b) audible, (c) ultrasonic, (d) supersonic.

13.The bending of sound waves is called (a) resonance, (b) reflection, (c) refraction, (d) interference.

14.Sonar range detecting is based on (a) refraction, (b) reflection, (c) resonance, (d) interference.

15.The maximum distance of an oscillation from the center, or equilibrium, position is called (a) wavelength, (b) period, (c) amplitude, (d) frequency.

16.In SI system one hertz (Hz) is the unit of the (a) c, (b) speed of sound, (c) frequency, (d) period.

17.Waves travel with a speed of 150 m/s and a wavelength of 1.5m. What is the frequency?

(a) 1000 Hz (b) 100 Hz (c) 10 Hz (d) 225 Hz

18.A wave has a wavelength of 1.2m and a period of 0.6second. What is the speed?

(a) 2m/s (b) 20 m/s (c) 0.7 m/s (d) 0.5 m/s

19.A wave has a frequency of 400 Hz and a speed of 200 m/s. What is the wavelength?

(a) 5 m (b) 0.5 m (c) 50 m (d) 2 m

20.A wave has a wavelength of 0.75 m and a frequency of 440 Hz. What is the speed?

(a) 33m/s (b) 300 m/s (c) 3 m/s (d) 330 m/s

Answer #1

1. An object of mass M oscillates on a spring with maximum
amplitude A. If the amplitude is doubled, how will it change the
period?
The period is increased by a factor of 2
The period is increased by a factor of 4
The period is decreased by a factor of 2
The period is decreased by a factor of 4
The period stays the same
2. In the “Resonance” lab, you used a “piano” to generate a
frequency of...

A traveling wave on a string oscillates with an amplitude of
0.080m and a frequency of 2.5Hz. The speed of the waves on the
string is 10 m/s. At t=0, the end from which the oscillations
originate has a vertical displacement of 0m.
a) Find the angular frequency, period, wavelength, and wave
number.
b) Write a wave function describing the wave.
c) The linear mass density μ of the string is 0.300kg/m, and
tension in the spring is maintained at...

Standing Waves
1. Draw a sine wave. On this graph, indicate what the Amplitude
and Period are. If someone just gave you this graph, how could you
find the Frequency?
2. Imagine that two water waves moving in opposite directions
run into each other. What will the resulting wave look like?
3. When 2 waves interfere, can the resulting wave have a larger
amplitude than either of the two original waves? When?
4. What is the definition of a node?...

A string is stretched out horizontally between two xed posts.
(a) When set vibra ng at a frequency of between 200 Hz and 600 Hz
(3 SF, no zeroes), the string exhibits a standing wave with ve (5)
loops. Make and label a sketch showing the wavelength ? of the
waves and the length L of the string when vibra ng in this mode.
(b) The string is between 4 and 9 meters long (3 SF, no zeroes).
Calculate the...

13.
An open pipe of length 0.39 m vibrates in the third harmonic
with a frequency of 1400Hz. What is the distance from the center of
the pipe to the nearest antinode?
0 cm
13 cm
6.5 cm
9.8 cm
3.2 cm
14.
Wave speed (v) equals the product of
wavelength and amplitude
amplitude and frequency
frequency and period
wavelength and frequency
15.
A standing wave of the fifth harmonic is induced in a stopped
pipe of length 1.5m. The...

What is the length of an open-pipe resonator with a fundamental
frequency of 400.0Hz 400.0 Hz ? (Assume the speed of sound is
331m/s 331 m/s .)
flute is an open-pipe resonator that can produce a wavelength
that is twice as long as itself. A clarinet is a closed-pipe
resonator. What is the longest wavelength that a clarinet can
produce?
Why do the same notes sound different on different musical
instruments?
What is the possible number of nodes and antinodes...

Oscillation of a 230 Hz tuning fork sets up standing waves in a
string clamped at both ends. The wave speed for the string is 750
m/s. The standing wave has four loops and an amplitude of 1.6 mm.
(a) What is the length of the string? (b) Write an equation for the
displacement of the string as a function of position and time.
Round numeric coefficients to three significant digits.

An electromagnetic wave in a medium is given by the following
wave function expression:
E=5E0(i-2j)sin(kx-wt).
The wave is known to have a wavelength of 690 nm and frequency of
3.2*1014 Hz. Also E0=104 V/m. For
this wave find the propagation number, angular frequency, direction
of propagation, speed of wave, index of refraction of medium,
direction of E oscillation, direction of
corresponding B oscillation, amplitude of
E, amplitude of B, and calculate
the irradiance of this wave.

Two waves, each of frequency 250 Hz and wavelength
25.12 cm, produce
interference in which the maximum amplitude is 0.10 m and minimum
amplitude is
0.04 m. Estimate (a) the angular frequency of each wave, (b) the
propagation
constant (k) of each wave, (c) the amplitude of each wave and (d)
resultant
intensity, if the phase difference between the waves is 3.14
radian.

A stone is dropped from the top of a cliff. The splash it makes
when striking the water below is heard 3.2 s later. How high is the
cliff?
2. The pressure variation is a sound wave is given by Δ P =
0.0035 sin (0.38 π x – 1350 π t) Determine a. the wavelength b. the
frequency c. the speed and d. the displacement amplitude of the
wave. Assume the density of the medium to be 2.2 x...

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