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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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Those should be the 2 main explanations. There probably are other options

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3 years ago
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A 290-turn solenoid having a length of 32 cm and a diameter of 11 cm carries a current of 0.30 A. Calculate the magnitude of the
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The magnitude of the magnetic field inside the solenoid is 3.4×10^(-4) T.

To find the answer, we need to know about the magnetic field inside the solenoid.

<h3>What's the expression of magnetic field inside a solenoid?</h3>
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I= 0.3 A

  • So, Magnetic field= 4π×10^(-7)×906×0.3 = 3.4×10^(-4) T.

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6 0
1 year ago
A camera lens focuses on an object 75.0 cm from the lensThe image forms 3.50 cm behind the lens. What is the magnification of th
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Answer:

7/150

Explanation:

The following data were obtained from the question:

Object distance (u) = 75cm

Image distance (v) = 3.5cm

Magnification (M) =..?

Magnification is simply defined as:

Magnification (M) = Image distance (v)/ object distance (u)

M = v /u

With the above formula, we can obtain the magnification of the image as follow:

M = v/u

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3 years ago
A well-thrown ball is caught in a well-padded mitt. If the deceleration of the ball is 2.10×104 m/s2 , and 1.85 ms (1 ms = 10−3
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Answer:

u = - 38.85 m/s^-1

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time = 1.85*10^{-3} s

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v = u +at

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0 = u + (21 *1.85)

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When a guitar string is plucked, in what direction does the wave travel? In what directions does the string vibrate?
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