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100
No, because a vacuum does not contain any particles to act as medium through which the sound can travel. In an area that is not a vacuum, sound passes through surrounding air particles, which then vibrate or collide.
Can sound travel through a vacuum. Explain
100
f= -kx
What is Hooke's Law equation?
100
A wave is a continuous and repeating disturbance of a medium and a pulse is a single disturbance.
A single disturbance that moves from point to point through a medium is called a ___.
100
lambda
What is the name of the symbol used for wavelength?
200
28 degrees
A ray of light in air is incident on an air-to-glass boundary at an angle of 50. degrees with the normal. If the index of refraction of the glass is 1.65, what is the angle of the refracted ray within the glass with respect to the normal?
200
Amplitude Only
If a sound becomes louder, which wave characteristic is likely increasing – frequency, wavelength, amplitude, or speed?
200
destructive interference
What is it called when to waves cancel out each other?
200
Let d = wavelength. Since d*f = v, f = v/d. Answer: A
A wave X meters long passes through a medium with a speed of Y meters per second. The frequency of the wave could be expressed as a. Y/X cycles/sec. b. X/Y cycles/sec. c. XY cycles/sec. d. (X + Y) cycles/sec.
200
air
What medium does sound waves travel through?
300
1.35
What iIf the critical angle for internal reflection inside a certain transparent material is found to be 48.0 degrees, what is the index of refraction of the material? (Air is outside the material).
300
Bats because higher frequency means shorter wavelengths
A cat can hear sound frequencies up to 70,000 Hz. Bats send and receive ultrahigh-frequency squeaks up to 120,000 Hz. Which hears sound of shorter wavelengths, cats or bats?
300
k = 3406.25 N/m
A 5 kg crate falls from a height of 2m onto an industrial spring scale. When the crate comes to rest the compression of the spring is 24cm. What is the spring constant?
300
Use v = f x l v = 3250 x 0·1 = 325 m/s.
A sound wave has a frequency of 3250 Hz and a wavelength of 0·1 m. What is its velocity?
300
high frequency
If a wave has a short wavelength, what type of frequency does it have?
400
Diamond has a very high refractive index. It can strongly separate the different frequencies (colors) of white light from each other. Diamonds are carefully cut so that light entering from most angles is trapped by reflecting surfaces into multiple reflections so that when the light eventually escapes, it does so in bursts we call "sparkles". And with the separation of the colors, the sparkles can be almost any color.
If the critical angle for internal reflection inside a certain transparent material is found to be 48.0 degrees, what is the index of refraction of the material? (Air is outside the material).
400
1.3m
What is the wavelength of sound waves produced in air by a vibrating tuning fork whose frequency is 256 Hz when the velocity of sound in air is
330 m s-1?
400
Use f = v ÷ l f = 25 ÷ 10 = 2·5 Hz.
A wave at sea travels with a velocity of 25 m/s. If it has a wavelength of 10 m, what is its frequency?
400
an increase (or decrease) in the frequency of sound, light, or other waves as the source and observer move toward (or away from) each other. The effect causes the sudden change in pitch noticeable in a passing siren, as well as the redshift seen by astronomers.
What is the Doppler Effect?
500
40.0 degrees
What is the angle of incidence on an air-to-glass boundary if the angle of refraction in the glass (n = 1.52) is 25 degrees?
500
180HZ 360/2
If velocity of sound in a gas is 360 m/s and the distance between a compression and the nearest rarefaction is 1m, then the frequency of sound is
500
Using our spring force equation: 82 = -k * (-0.03) Solve for k: k = 82 / 0.03 = 2733 N/m Now we apply force on the block, such that it does work on the spring. The potential energy stored in a spring is given by: U = 1/2 * k * x^2 Work = - (change in potential energy) = U1 - U2 6.0 = 1/2 * k * (x^2 - (-0.03)^2) Now solving for x: 12 / k = x^2 - .0009 x^2 = 0.0053 x = +/- sqrt[ 0.0053 ] = +/- 0.073 m = +/- 7.3 cm
We must apply a force of magnitude 82.0 N to hold the block stationary at x=-3.0 cm. From that position, we then slowly move the block so that our force does +6.0 J of work on the spring–block system; the block is then again stationary. What are the block's positions, in cm? (two answers-(a) positive and (b) negative)
500
The distance between the pressure maxima is an integer number of wavelength. Therefore the shortest distance is the wavelength. The speed of sound at 25 C is 346.33 m/s. Then we can find the wavelength: L= V/F= 346.34/266=1.3m
A saxophone is playing a steady note of frequency 266 Hz. The temperature in the room is 25 C. Suppose that at some instant the varying pressure at your eardrum is at a maximum. How far away in meters is the next pressure maximum?
500
10hz
If a vibrator strikes the water 10 times in one second, then the frequency of wave is _________.