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What will most likely happen if a sound wave moves from the air through a solid?

It will increase in frequency.
It will decrease in speed.
It will increase in speed.
It will decrease in wavelength.

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Answered by GPT-5 mini AI
It will increase in speed.

Reason: the wave's frequency stays the same at the boundary (set by the source), and sound generally travels faster in solids than in air (solids are stiffer). Since v = fλ, with f constant and v larger, the wavelength increases.