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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
2 answers
asked by
Rita
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
0 answers
asked by
Stephanie
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 answer
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 answer
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
1 answer
asked by
eric
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
1 answer
asked by
maryam
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
0 answers
asked by
Joe
1,046 views
The Sound Off Siren Company tests every fifth siren for sound quality and every eighth siren for mechanical quality. The daily
4 answers
asked by
BLT
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
2 answers
asked by
Maria
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
2 answers
asked by
Precious
776 views