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zavuch27 [327]
4 years ago
15

When a 440-Hz tuning fork and a piano key are struck together, five beats are heard. If the pitch of the note on the piano is lo

wer than the tuning fork, what is the frequency of the note?
Physics
2 answers:
vovangra [49]4 years ago
7 0
The frequency would also be lower
guapka [62]4 years ago
6 0
440Hz < n2
n2 - 440 = 5
n2 = 445hz
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Answer:

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Part b)

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Part c)

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Explanation:

Part a)

As we know that ball will reach at maximum height at

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now we will have

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Now maximum height above ground is given as

H = \frac{v^2sin^2\theta}{2g}

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Part b)

Height of the fence is given as

y = (vsin\theta) t - \frac{1}{2}gt^2

y = (29.4)(5.5) - \frac{1}{2}(9.8)(5.5^2)

y = 13.48 m

Part c)

As we know that its horizontal distance moved by the ball in 5.5 s is given as

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now total time of flight is given as

T = 3 + 3 = 6 s

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R = v_x T

R = (17.72)(6)

R = 106.4 m

so the distance from the fence is given as

d = 106.4 - 97.5

d = 8.86 m

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