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SVETLANKA909090 [29]
3 years ago
12

A car speeds past you sounding its horn at a frequency of 1000Hz. The frequency you hear:

Physics
1 answer:
ki77a [65]3 years ago
3 0

Answer:

f' =1064.1025 Hz

Explanation:

We know that from doppler's effect

f'=\frac{v+v_0}{v-v_s}f

f'= observed frequency

f= actual frequency =1000 Hz

v= velocity of sound waves = 332 m/s

v_o= velocity of observer =0

v_s= velocity of source. ( let velocity of car be 20 m/s)

therefore,

f'=\frac{332+0}{332-20}\times1000

f' =1064.1025 Hz

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Answer:

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Explanation:

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5 0
2 years ago
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Answer:

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Explanation:

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7 0
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Answer:

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Yes, you can form the shadow of a fire

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</span>P<span>₂*50= 300*75
</span>
P<span>₂ = 300*75/50 = 450
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P<span>₂ = 450 kiloPascals.

The pressure has increased as a result of compression of gas.

Boyle's Law supports this observation.</span>
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2 years ago
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