3 years ago

Which of these does NOT emit visible light?

Physics

1 answer:

s344n2d4d5 [400]3 years ago

5 0

c the galaxy because on a nice night you cant see the milkly way

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Answer:

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3 years ago

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Maru [420]

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3 years ago

If a sound is 30 dB and its absolute pressure was 66 x 10-9 Pa, what must have been the reference pressure?

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Given:

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$30 = 20\log _{10}\frac{66\times 10^{-9}}{P^{o}}$

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