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Mashcka [7]
3 years ago
13

Calculate What is the atomic number of a sodium atom that has 11 protons and 12 neutrons

Physics
1 answer:
miv72 [106K]3 years ago
8 0

Answer:

11 because the number of protons is the atomic humber

Explanation:

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Answer:

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Two sound waves (speed 343 m/s) have different wavelengths. The first has a wavelength of 5.72 m, and the second a wavelength of
lys-0071 [83]

Answer:

The beat frequency is 30 Hz

Explanation:

Given;

velocity of the two sound waves, v = 343 m/s

wavelength of the first wave, λ₁ = 5.72 m

wavelength of the second wave, λ₂ = 11.44 m

The frequency of the first wave is calculated as follows;

F₁ = v/λ₁

F₁ = 343 / 5.72

F₁ = 59.97 HZ

The frequency of the second wave is calculated as follows;

F₂ = v/λ₂

F₂ = 343 / 11.44

F₂ = 29.98 Hz

The beat frequency is calculated as;

Fb = F₁ - F₂

Fb =  59.97 HZ - 29.98 Hz

Fb = 30 Hz

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The captain told the passengers that the plane is flying at 450 miles per hour. This information describes the plane's
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anyanavicka [17]

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c

Explanation:

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