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Sound waves
Page 9
Questions (1,086)
Of the following materials, sound waves travel fastest through...?
Helium at room temperature Air at room temperature Water at
2 answers
asked by
Anon
873 views
A siren mounted on the roof of a firehouse emits sound at a frequency of 900 Hz. A steady wind is blowing with a speed of 15
1 answer
asked by
Stephanie
872 views
1)As a sound source moves away from a stationary observer, the number of waves will.
A)increase B)decrease C)remain the same
2 answers
asked by
Jon
872 views
If the energy carried by a sound wave is multiplied by a thousand, by what factor does the intensity of the sound wave increase?
3 answers
asked by
Lili
860 views
A police car approaches a large wall at 51m/s. Its siren emits a 980 Hz signal.
What is the frequency of the reflected sound
2 answers
asked by
maryam
854 views
A rocket in a fireworks display explodes high in the air. The sound spreads out uniformly in all directions. The intensity of
3 answers
asked by
Tim
846 views
Jill screams and hears her echo 4.4 seconds later. How far from the canyon wall is she if the air temperature is 25 degree C?
2 answers
asked by
Cindy
857 views
15 beats are heard in 5 seconds when a piano key and a tuning fork of slightly higher frequency (440 Hz) are struck at the same
3 answers
asked by
Brent
850 views
A row of seats is parallel to a stage at a distance of 8.70 m from it. At the center and front of the stage is a diffraction
2 answers
asked by
J
831 views
The note D above middle C has a frequency of 294 cycles per second, and the note E has a
frequency of 330 cycles per second. A
4 answers
asked by
Tom
830 views
An electric guitar’s amplifier is at a distance
of 4.6 m. Find the intensity of its sound waves when its power output is 0.18
3 answers
asked by
Anonymous
822 views
The difference between the speed of sound in air at 0 degrees Celsius and the speed of sound in air at 20 degrees Celsius is
3 answers
asked by
Need Urgent Help Please
1,396 views
Two speakers, A and B, are emitting identical, synchronized (in-phase) sound waves at 240kHz. A person standing a point C hears
1 answer
asked by
Michael
1,005 views
1)As a sound source moves away from a stationary observer, the number of waves will.
A)increase B)decrease C)remain the same
6 answers
asked by
Jon
835 views
Richard stands on the flatbed car of a moving train playing an a on his horn. the note has a fundamental frequency of 220 Hz.
2 answers
asked by
chardonay
803 views
1. A train whistle has a frequency of 1000 Hz. If the train is speeding
at a velocity of 60 km/h past a stationary railroad
1 answer
asked by
James
794 views
Two identical loudspeakers are some distance apart. A person stands 5.70 m from one speaker and 3.00 m from the other. What is
1 answer
asked by
Anon
781 views
An electronic point source emits sound isotropically at a frequency of 3000 Hz and a power of 34 watts. A small microphone has
3 answers
asked by
caleb
799 views
suppose that you wish to determine how far away from your position lightning has struck. the thunder that results from lightning
3 answers
asked by
Sara
787 views
A bat flying at 5.5 m/s emits a chirp at 35 kHz. If this sound pulse is reflected by a wall, what is the frequency of the echo
1 answer
asked by
physics22
790 views
A bat moving with a speed of 3.55 m/s and emitting sound of 34.0 kHz approaches a moth at rest on a tree trunk. What frequency
1 answer
asked by
utl
751 views
A bat flying at 4.54 m/s emits a chirp at 115 kHz. If the pulse is reflected by a wall, what is the frequency (kHz) of the echo
1 answer
asked by
Anonymous
771 views
Can anyone just check my answers and tell me if correct or not. If I’m incorrect, please tell me the correct answers...
On a
5 answers
asked by
GlowBaby
755 views
About how long does it take for sound to travel 1 Km?
3 answers
asked by
tracy
760 views
In this section assume the sound speed in air is 343 m/s.
A goose flying toward you at 12.6m/s emits a squawk, which you hear at
3 answers
asked by
sandra
773 views
The speed of sound in fresh water is 1.5 ✕ 103 m/s. Ultrasound sent from a boat on a fresh water lake strikes a school of fish
2 answers
asked by
Alex
750 views
When a guitar string is sounded against a 440Hz note, 12 beats are heard in 2.0s.
a) what are the possible frequencies of the
2 answers
asked by
alex
755 views
A source traveling at 100m/s emits sound waves of frquency 900hz ..what is the velocity of the sound ?
1 answer
asked by
Perla
769 views
A motorcycle and a police car are moving toward one another. The police car emits sound with a frequency of 512 Hz and has a
1 answer
asked by
Cooper
751 views
Richard stands on the flatbed car of a moving train playing an a on his horn. the note has a fundamental frequency of 220 Hz.
1 answer
asked by
chardonay
723 views
1)As a sound source moves away from a stationary observer, the number of waves will.
decrease 2)How fast should a car move toward
1 answer
asked by
Jon
740 views
A physicist at a fireworks display times the lag between seeing an explosion and hearing its sound, and finds it to be 0.800 s.
(
2 answers
asked by
Justin
716 views
A person, with his ear to the ground, sees a huge stone strike the concrete pavement. A moment later two sounds are heard from
2 answers
asked by
me
708 views
If you double the frequency of sound, you also double which of the following?A) All of these.B) None of these.C) wavelength.D)
3 answers
asked by
Kristie
700 views
Two loudspeakers emit sound waves along the x-axis. The sound has maximum intensity when the speakers are 14.0 cm apart. The
2 answers
asked by
Anonymous
713 views
A friend in another city tells you that she has two organ pipes of different lengths, one open at both ends, the other open at
1 answer
asked by
eva
714 views
Two loudspeakers emit sound waves along the x-axis. The sound has maximum intensity when the speakers are 35.9cm apart. The
1 answer
asked by
joane
716 views
The lowest A on a piano has a frequency of 27.5 Hz.
Assume: The tension in the A piano wire (of length 0.51 m) is 305 N, and
1 answer
asked by
AJ
709 views
At a factory, a noon whistle is sounding with a frequency of 480 Hz. As a car traveling at 85 km/h approaches the factory, the
3 answers
asked by
Armany
700 views
A sound wave in air at 20० C has a frequency of 150 hz and a displacement amplitude of 5m. For this calculate pressure
3 answers
asked by
Anonymous
696 views
A tuning fork creates sound wave with frequency of 170 hertz. If the speed of sound is 340 m/s, what is the wave length of the
2 answers
asked by
Christopher
707 views
A train is moving at a speed of 30 m/s toward a stationary observer at a train station. The train whistle blows with an actual
2 answers
asked by
Anonymous
703 views
When needed, use 340 m/s for the speed of sound and 3.00 x 108 m/s for the speed of light.
A hiker determines the length of a
2 answers
asked by
DariaV
674 views
A tuning fork creates sound wave with frequency of 170 hertz. If the speed of sound is 340 m/s, what is the wave length of the
2 answers
asked by
Christopher
689 views
If a gas tap is turned on for a few seconds, someone a couple of meters away will hear the gas escaping long before he or she
1 answer
asked by
Nikki
686 views
You hear the sonic boom of a high-speed jet plane exactly 3.10 s after it passes directly overhead in level flight. At the time
2 answers
asked by
Trace
667 views
A 1.0 m long string is fixed at both ends and has a tension of 80N. The mass of the string
is 2 gm. Find the third harmonic of
3 answers
asked by
Freddy
671 views
Find the number of decibels of sound produced by a jet engine at a distance of 50 metres if the intensity is 10 watts per square
1 answer
asked by
Donna
670 views
You blow a whistle of frequency 942 Hz, as you move towards a wall.
The frequency of beats you hear from the whistle and the
2 answers
asked by
help need . Mansuri
689 views
An organ pipe is 81 cm long and at a temperature of 20 degrees C. What is the fundamental (in Hertz) if the pipe is closed at
1 answer
asked by
kassy
678 views
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Parent Categories (26)
Acoustics
Communication
Energy and Power
Mechanical Waves
Mechanics
Music
Physical Science
Physics
Physics of Sound
Physics, Sub-sub-category: Sound Waves
Physics/Science
Properties of Matter
Properties of Waves
Reflection of Waves
Science
Science and Physics
Science and Technology
Wave Mechanics
Wave phenomena
Wave Properties
Waves
Waves and Acoustics
Waves and Frequency
Waves and Optics
Waves and Oscillations
Waves and Vibrations