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Olin [163]
4 years ago
12

Question 5

Physics
1 answer:
ra1l [238]4 years ago
8 0

Answer:

the wavelength of the first instrument is approximately 1.5 greater than that produced by the second instrument.

Explanation:

Given:

f₁ = frequency = 266 Hz

f₂ = 400 Hz

Question: How do the wavelength of each of these sound waves compare, λ₁ = ?, λ₂ = ?

The equation to solve this question is

\lambda =\frac{v}{f}

Here

λ = wavelength of the sound

v = speed of sound = 340 m/s

f = frequency of each instrument

You need to calculate both wavelengths

\lambda _{1} =\frac{v}{f_{1} } =\frac{340}{266} =1.2782m

\lambda _{2} =\frac{v}{f_{2} } =\frac{340}{400} =0.85m

Ratio=\frac{\lambda _{1}}{\lambda _{2} } =\frac{1.2782}{0.85} =1.5038

According to the results, the wavelength of the first instrument is approximately 1.5 greater than that produced by the second instrument.

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we can rewrite the above equation as :

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T_2= 280+\frac{((510)^2-(120)^2)}{2(1.004)} *\frac{1}{10^3}

T_2 = 402.36 \ K

Thus, the exit temperature = 402.36 K

The exit pressure is determined by using the relation:\frac{T_2}{T_1} = (\frac{P_2}{P_1})^\frac{k}{k-1}

P_2=P_1(\frac{T_2}{T_1})^\frac{k}{k-1}

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P_2 = 17.79 \ bar

Therefore, the exit pressure is 17.79 bar

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