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a sound wave of frequency 400Hz is travelling in a gas at the of 320 meter per second.what is the phase difference between two points 0.2 meter in the direction of travel?

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Δφ = 2πΔx/λ

where Δφ is the phase difference, Δx is the distance between the two points, and λ is the wavelength of the sound wave.

To find the wavelength, you can use the formula:

λ = v/f

where v is the speed of sound in the gas and f is the frequency of the sound wave.

Plugging in the values given in your question, we get:

λ = v/f = 320/400 = 0.8 m

Δφ = 2πΔx/λ = 2π(0.2)/0.8 = π/2

Therefore, the phase difference between the two points is π/2 radians.

λ = v/f

where v is the speed of sound in the gas and f is the frequency of the sound wave.

Plugging in the values given in your question, we get:

λ = v/f = 320/400 = 0.8 m

Δφ = 2πΔx/λ = 2π(0.2)/0.8 = π/2

Therefore, the phase difference between the two points is π/2 radians.
User Timur Gafforov
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