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777dan777 [17]
3 years ago
11

A fisherman sees his boat moving up and down, owing to waves on the water. It takes 2.5 s for the boat to travel from its highes

t to lowest point, a distance of 0.62 m. The fisherman sees that the wave crests are spaced 6 m apart. How fast are the waves traveling?
Physics
1 answer:
nata0808 [166]3 years ago
7 0

Answer:

The waves are traveling in a speed of

v=1.20 m/s

Explanation:

The fisherman see a wave at 6m apart so that's the wavelength

L=6m

Now the period is the time between two successive waves so

t=2*2.5s=5s

The velocity of the waves is describe by:

v=f*L

f=\frac{1}{t}=\frac{1}{5s}=20s^{-1}

v=0.20s^{-1}*6m

v=1.20 \frac{m}{s}

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Speed = (256 Hz) x (1.3 m) = 332.8 meters per second

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On the oscilloscope, they would appear larger from top to bottom, but the
horizontal size of each wave doesn't change.

If the instrument is played at a higher pitch, then the waves become shorter,
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If the instrument plays louder and at higher pitch, the waves on the scope
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3).  The equation is:  Frequency = (speed) / (wavelength)
(Notice that this is exactly the same as the equation up above in question #1,
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Frequency = 300,000,000 meters per second / 1,500 meters = 200,000 per second.

That's ' 200 k Hz ' .

Note:
I didn't think anybody broadcasts at 200 kHz, so I looked up BBC Radio 4
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and one of them is 198 kHz !
7 0
3 years ago
Which of the following statements about floating objects is always true? a. The object’s density is greater than the density of
Yuki888 [10]
It should be C. If the object is denser than the fluid, it will sink. If it isn't, it will float
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3 years ago
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How does laser works ?<br>​
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Explanation:

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6 0
3 years ago
A river flowing steadily at a rate of 175 m3/s is considered for hydroelectric power generation. It is determined that a dam can
Alex_Xolod [135]

Answer:

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Explanation:

The formula for power is P= dhrg

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r = flow rate in cubic meters per second,

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Plugging in the known values,

we get

P = 1000 kg/m^3 * 80 m * 175 m^3/s * 9.8 m/s^2

P = 80000 kg/m^2 * 175 m^3/s * 9.8 m/s^2

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P = 137200000 kg m^2/s^3

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