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igomit [66]
3 years ago
5

The driver of a car hears the siren of an ambulance that is moving away from her. If the actual frequency of the siren is 2000 h

ertz, which frequency was heard by the driver?
A
1900 Hz

B
2000 Hz

C
2100 Hz

D
4000 Hz
Physics
2 answers:
MatroZZZ [7]3 years ago
8 0
The answer is A.) 1,900 Hz
Inessa05 [86]3 years ago
4 0
I think the answer is a) 1900 Hz :)
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Answer:

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icang [17]

Answer:

x = 220.85 ft

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tan \theta = \frac{h}{x}

now we know that

initially the angle of the friend's car is 35 degree

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x_2 = h cot36

now the speed of the balloon is constant

so we have

v = \frac{x_1 + x_2}{\Delta t}

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The answer to this question is:

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Your Welcome :)
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