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A siren emits a sound

A siren emits a sound of frequency 1200 kHz. With which frequency is it received by a car moving at a speed of 20 m/s.a) Away
1. 2 answers
2. asked by Rita
3. 772 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
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2. asked by Stephanie
3. 942 views
the siren of a stationary police car emits sound waves of wavelength 0.55m with its siren on the police car bow approaches a
1. 1 answer
2. 82 views
the siren of a stationary police car emits sound waves of wavelength 0.55m with its siren on the police car bow approaches a
1. 1 answer
2. 81 views
a police siren emits a sinusoidal wave with frequency f=300hz.the speed of sound is 340ms. find the wave lenght of the waves if
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2. asked by eric
3. 952 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
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2. asked by maryam
3. 933 views
at a distance of 3.8 m from a siren, the sound intensity is 3.6 x 10-2 W/m2. Assuming that the siren radiates sound uniformly in
1. 0 answers
2. asked by Joe
3. 1,046 views
The Sound Off Siren Company tests every fifth siren for sound quality and every eighth siren for mechanical quality. The daily
1. 4 answers
2. asked by BLT
3. 797 views
A siren on the top of the police car moving with a speed of 40 m/s emits sound at frequency of 820Hz. Ahead of the car, there is
1. 2 answers
2. asked by Maria
3. 1,098 views
A factory siren emits a sound at 900hz.what frequency will be heard by the driver of a car traveling at 100km.h away from the
1. 2 answers
2. asked by Precious
3. 776 views