3 years ago

Why is it better to hold a musical events or programs in the evening?

Physics

2 answers:

Allushta [10]3 years ago

8 0

Answer:

sound travels faster in the night

Explanation:

djyliett [7]3 years ago

8 0

Sound travels fasted at night

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Two sources of light of wavelength 710 nm are 9 m away from a pinhole of diameter 1 mm. How far apart must the sources be for th

Zepler [3.9K]

Answer:

7.8 mm

Explanation:

Wavelength = λ = 710 nm = 710×10⁻⁹ m

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Rayleigh Criterion

$D=1.22\frac{L\lambda}{d}\\\Rightarrow D=1.22\frac{9\times 710\times 10^{-9}}{1\times 10^{-3}}\\\Rightarrow D=0.0077\ m=7.8\ mm$

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Answer:

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