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Doppler effect
Page 4
Questions (319)
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
5 answers
asked by
Jon
1,182 views
A train moving at a constant speed is passing a stationary observer on a platform. a flute player is playing a note with
2 answers
asked by
John
1,126 views
You are riding your bicycle directly away from a stationary source of sound and hear a frequency that is 2.5% lower than the
1 answer
asked by
Coreen
1,110 views
Ige confused, the truck driver sound the horn of the truck, which has a frequency of 260HZ. The speed of sound in air is 340m/s.
2 answers
asked by
guli
1,096 views
While blowing its horn of frequency 466 Hz, a car accelerates at 0.84 m/s2.
The car starts from rest by your side and moves away.
2 answers
asked by
suuppii .. can anyone help
1,047 views
Three sources of sound are distributed along a line, as shown in the figure. v is the speed of sound. Source A is at rest, and
2 answers
asked by
Ben
1,082 views
Blueshift is observed when(1 point)
Responses a distant luminous object travels rapidly towards an observer. a distant luminous
1 answer
asked by
josie
59 views
When a vibrating object is moving blank an observer, the measured frequency of the vibrations will be lower than if the object
1 answer
asked anonymously
41 views
A train whistle is heard at 310Hz as the train approaches town. The train cuts its speed in half as it nears the station, and
1 answer
asked by
ggg
1,011 views
The frequency of an ambulance siren is 700 Hz. If a pedestrian on the side of the road hears the siren at 756 Hz approximately
3 answers
asked by
Jane
993 views
A train is moving parallel and adjacent to a highway with a constant speed of 23 m/s. A car is traveling in the same direction
3 answers
asked by
Need answer by 10pm
997 views
a.)At rest, a car's horn sounds at a frequency of 410 Hz. The horn is sounded while the car is moving down the street. A
1 answer
asked by
sanchi
951 views
From a vantage point very close to the track at a stock car race, you hear the sound emitted by a moving car. You detect a
1 answer
asked by
Joe
943 views
a flying bat emits squeaks of frequency 80 kHz.if a stationary observer hears the frequency of the squeaks as 78kHz,is the bat
3 answers
asked by
precious
914 views
A car drives at a speed of 28m/s along a road parallel to a railroad track. A train traveling at 15m/s sounds a horn that
2 answers
asked by
Anonymous
909 views
The siren of a police car produces a sound of frequency 420Hz.A man sitting next to the road notices that the pitch of the sound
2 answers
asked by
Lydia
925 views
The security alarm on a parked car goes off and produces a frequency of 1370 Hz. The speed of sound is 343 m/s. As you drive
3 answers
asked by
Anonymous
906 views
Two Train whistles, A and B each have a frequency of 408Hz. A is stationary and B is moving toward the right (away from A) at a
2 answers
asked by
tre
905 views
The observed frequency of a train whistle is 513Hz as it approaches a stationary observer and is 432Hz as it recedes.
Find the
2 answers
asked by
maryam
879 views
A bat moving at 3.7 m/s is chasing a flying
insect. The bat emits a 36 kHz chirp and receives back an echo at 36.79 kHz. At what
1 answer
asked by
Anonymous
865 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
873 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
874 views
A hydrogen atom, when vigorously perturbed, can emit light with a frequency of 6.16 × 1014 Hz. When the same light from
2 answers
asked by
Joan
859 views
If the bat emits a sound at a frequency of 80.0 kHz and hears it reflected at a frequency of 83.3 kHz while traveling at a speed
2 answers
asked by
Maddie
854 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
857 views
A whistle of frequency 490 Hz moves in a circle of radius 2.00 ft at an angular speed of 15.0 rad/s. What are the lowest and the
1 answer
asked by
Kyle
820 views
Hello to all the fantastic tutors! I'm stuck on this question, I was wondering if there is a way to solve this.
A car horn emits
2 answers
asked by
Tommy
847 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
A train moving at a constant speed is passing a stationary observer on a platform. a flute player is playing a note with
2 answers
asked by
John
806 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
836 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
806 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
795 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
753 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
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
774 views
Two cars, one in front of the other, are traveling down the highway at 25 m/s. The car behind sounds its horn, which has a
1 answer
asked by
Katie
756 views
A train is moving past a crossing where cars are waiting for it to pass. While waiting, the driver of the lead car becomes
2 answers
asked by
Tony
776 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
754 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
724 views
Question about doppler effect:
How do you solve when it gives you percentage value? (Q 1) How do you calculate for doppler effect
1 answer
asked by
Tommy
753 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
742 views
Ultrasound reflected from an oncoming bloodstream that is moving at 30 cm/s is mixed with the original frequency of 1.3 MHz to
1 answer
asked by
Angel
742 views
A CAR IS TRAVELING AWAY FROM YOU AT 70.0 MI/H. THE CAR HORN PRODUCES A SOUND AT A FREQUENCY OF 5000HZ. WHAT FREQUENCY DO YOU
4 answers
asked by
~ALICE~
710 views
At the Indianapolis 500, you can measure the speed of cars just by listening to the difference in pitch of the engine noise
2 answers
asked by
tasha
701 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
702 views
A car is parked 23.0 m directly south of a railroad crossing. A train is approaching the crossing from the west, heading
1 answer
asked by
Faune
701 views
An observer traveling with a constant velocity of 20m/s passes close to a stationary source of sound and noticed that there is a
3 answers
asked by
Kenry
679 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
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Acoustics
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