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maks197457 [2]
3 years ago
7

Noise-canceling headphones are an application of destructive interference. Each side of the headphones uses a microphone to pick

up noise, delays it slightly, then rebroadcasts the noise next to your ear where it can interfere with the incoming sound wave of the noise. Suppose you are sitting 1.8 m from an annoying, 200 Hz buzzing sound.
Physics
1 answer:
exis [7]3 years ago
4 0
The question for this problem would be the minimum headphone delay, in ms, that will cancel this noise.
The 200 Hz. period = (1/200) = 0.005 sec. It will need to be delayed by 1/2, so 0.005/2, that is = 0.0025 sec. So converting sec to ms, will give us the delay of:Delay = 2.5 ms.
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For each of the following, describe the relationship as directly or inversely proportional:
Maksim231197 [3]
The relationships can best be described as follows:
As frequency increases, wavelength decreases. <span>The greater the </span>energy<span>, the larger the frequency </span>and<span> the shorter (smaller) the </span>wavelength<span>. </span>

<span>a) wavelength vs. frequency = inversely proportional
b) wavelength vs. energy = inversely proportional
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Hope this answers the questions. Have a nice day. Feel free to ask more questions.</span>
7 0
3 years ago
Just say the letter of answer asap
kap26 [50]

answer  for number nine is C

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Divergent boundaries – where two plates are moving apart. ...


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3 0
3 years ago
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In any problems involving circular motion, which way does the tangential speed vector point?
Anton [14]

In what may be one of the most remarkable coincidences in
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The object on a circular path is moving in that exact direction
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4 0
3 years ago
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zaharov [31]
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6 0
4 years ago
An object that is slowing down in a positive direction must have
zepelin [54]

Answer:

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5 0
3 years ago
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