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Tom [10]
3 years ago
7

When a sound source approaches you, how does the pitch change?

Physics
2 answers:
torisob [31]3 years ago
5 0

Answer:

The pitch increases

Explanation:

This effect is called Doppler effect. Doppler effect occurs when the source of a wave (such as a sound wave) moves relative to a stationary observer. In particular, two situations can occur:

- When the sound source moves towards the observer, there is a decrease in the apparent wavelength as seen from the observer; since frequency is inversely proportional to wavelength, the observer hears a sound with apparent higher frequency, which corresponds to a higher-pitch sound.

- When the sound source moves away from the observer, there is an increase in the apparent wavelength as seen from the observer; since frequency is inversely proportional to wavelength, the observer hears a sound with apparent lower frequency, which corresponds to a lower-pitch sound.

In this case, the sound source is approaching you: so we are in the 1st situation, therefore the pitch of the sound increases.

ivanzaharov [21]3 years ago
5 0

Answer:

Pitch increases

Explanation:

I did gradpoint :+)

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Waves diffract the most when their wavelength is?
Margarita [4]
<h2>Answer: about the same size of the gap </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 <u>the obstacle must be comparable in size (similar size) to the size of the wavelength. </u>

<u></u>

In other words, <u>when the gap (or slit) size is larger than the wavelength</u>, 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 and the waves spread out greatly.

Therefore:

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

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4 years ago
Marie curie was a scientist who won two nobel prizes in the early 1900s for her work with.
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She remains the only person to be honored for accomplishments in two separate sciences. Curie received the Nobel Prize in Physics in 1903, <u>along with her husband and Henri Becquerel, </u>for their work on radioactivity.

<h3>What did Marie Curie discover?</h3>

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To learn more about Marie Curie from the given link

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Michael Faraday was the first to discover electromagnetic induction back in the 1830s. Faraday discovered that moving a permanent magnet in and out of a coil or a single loop of wire caused an electromotive force, or EMF—otherwise known as a voltage—to be produced.

Changing magnetic flux results in varied currents flowing through the coil, which in turn generates its own magnetic field. This self-induced EMF opposes the change that is creating it, and the stronger the opposing EMF is, the faster the rate at which the current is changing. According to Lenz's law, this self-induced EMF will oppose the change in current in the coil, and because of its orientation, it is typically referred to as a back-EMF.

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