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Gala2k [10]
2 years ago
7

A girl travels 20 miles on her bike, the trip takes two hours. express her speed in miles/hr

Physics
1 answer:
xxTIMURxx [149]2 years ago
6 0

Answer:

10 mph

Explanation:

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Steel is almost 2.9 times heavier the aluminium.

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Doubling the frequency of a wave source doubles the speed of the wave assuing that wavelength remains the same? True or false? W
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Answer:true,because velocity is directly proportional to speed or velocity

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The pickup truck has a changing velocity because the pickup truck
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3 years ago
Waves diffract the most when their wavelength is
djverab [1.8K]
<h2>Answer: about the same size of the gap  or slit</h2>

Diffraction happens when a wave (mechanical or electromagnetic wave, in fact, any wave) meets an obstacle or a slit .When this occurs, the wave bends around the corners of the obstacle or passes through the opening of the slit that acts as an obstacle, forming multiple patterns with the shape of the aperture of the slit.

Note that the principal condition for the occurrence of this phenomena is that the obstacle must be comparable in size (similar size) to the size of the wavelength.

In other words, when the gap (or slit) size is larger than the wavelength, the wave passes through the gap and does not spread out much on the other side, but when the gap size is equal to the wavelength, maximum diffraction occurs.

Therefore:

<h2>Waves diffract the most when their wavelength is <u>about the same size of the gap </u></h2>

<u />

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