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Step2247 [10]
3 years ago
9

As the train in the image moves to the right how does the train horn sound to person a?

Physics
2 answers:
Basile [38]3 years ago
5 0

Answer:

D.

Explanation:

It is D because person A is moving with the train, so they wouldn't experience any pitch change relating to the train's movement.

liraira [26]3 years ago
5 0

It sounds normal to people A and B. They're moving with the train, so the horn ON the train isn't moving toward them or away from them.

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Hooke's law describes an ideal spring. Many real springs are better described by the restoring force (F Sp ) s =−kΔs−q(Δs) 3 (p)
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Answer with Explanation:

We are given that

Restoring force,(FS_p)s=-k\Delta s-q(\Delta s)^3

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q=750 N/m^3

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\Delta s=15 cm=0.15 m

Using 1 m=100 cm

Work done=\int_{0}^{0.15}-Fd(\Delta s)

W=-\int_{0}^{0.15}(-k\Delta s-q(\Delta s)^3))d(\Delta s)

W=k[\frac{(\Delta s)^2}{2}]^{0.15}_{0}+q[\frac{(\Delta s)^4}{4}]^{0.15}_{0}

W=0.01125k+0.000127q=0.01125\times 350+0.000127\times 750

W=4.033 J

Ideal spring work=0.5k(\Delta s)^2=0.5\times 350\times (0.15)^2=3.938 J

Percentage increase in work=\frac{4.033-3.938}{3.928}\times 100=2.4%

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4 years ago
A) Calculate the pressure of water at the bottom of a well if the depth
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