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RideAnS [48]
3 years ago
9

Given that the speed of sound in air is 330m/s ,calculate the frequency of a note which setup a wavelength of 5cm in air.Is this

frequency within the limits of audibility of the human ear?
​
Physics
2 answers:
frosja888 [35]3 years ago
6 0

v = wavelength x frequency

330 = 5 . 10-² m x f

f = 6600 Hz

the frequency human is capable to hear- 20 Hz - 20. K Hz

so human can easily interpret note just like we interpret light

Pie3 years ago
3 0

Explanation:

v = wavelength x frequency

330 = 5 . 10-² m x f

f = 6600 Hz

the frequency that human can hear is about 20 Hz - 20000 Hz

so human can hear the note.

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3 years ago
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The current theory of the structure of the
IRISSAK [1]

1) The mass of the continent is 3.3\cdot 10^{21} kg

2) The kinetic energy of the continent is 624 J

3) The speed of the jogger must be 4 m/s

Explanation:

1)

We start by finding the volume of the continent. We have:

L = 5850 km = 5.85\cdot 10^6 m is the side

t = 35 km = 3.5\cdot 10^4 m is the depth

So the volume is

V=L^2 t = (5.85\cdot 10^6)^2 (3.5\cdot 10^4)=1.20\cdot 10^{18} m^3

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Therefore, we can find the mass by multiplying volume by density:

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2)

The kinetic energy of the continent is given by:

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v = 3.2 cm/year is the speed

We have to convert the speed into m/s. We have:

3.2 cm = 0.032 m

1 year = 1(365)(24)(60)(60)=3.15\cdot 10^7 s

So, the speed is:

v=\frac{0.032 m}{3.15 \cdot 10^7 s}=1.02\cdot 10^{-9} m/s

So, we can now find the kinetic energy:

K=\frac{1}{2}(1.20\cdot 10^{21})(1.02\cdot 10^{-9})^2=624 J

3)

Here we have a jogger of mass

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The kinetic energy of the jogger is given by

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Learn more about kinetic energy:

brainly.com/question/6536722

#LearnwithBrainly

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Why do volcanoes form above subduction zones
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Volcanoes form above subduction zones because Subduction zone volcanism occurs where two plates are converging on one another. One plate containing oceanic lithosphere descends beneath the adjacent plate, thus consuming the oceanic lithosphere into the earth's mantle. This on-going process is called subduction.
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Find the moment of inertia of a hoop (a thin-walled, hollow ring) with mass M and radius R about an axis perpendicular to the ho
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Answer:

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The range is the horizontal distance from the cannon when the pumpkin hits the ground. This distance is given by the product of
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