A siren emits a sound

  1. 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
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    2. Rita asked by Rita
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  2. 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. Stephanie asked by Stephanie
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  3. the siren of a stationary police car emits sound waves of wavelength 0.55m with its siren on the police car bow approaches a
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  4. the siren of a stationary police car emits sound waves of wavelength 0.55m with its siren on the police car bow approaches a
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  5. 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. eric asked by eric
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  6. 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. maryam asked by maryam
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  7. 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
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    2. Joe asked by Joe
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  8. The Sound Off Siren Company tests every fifth siren for sound quality and every eighth siren for mechanical quality. The daily
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    2. BLT asked by BLT
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  9. 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
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    2. Maria asked by Maria
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  10. 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
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    2. Precious asked by Precious
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