Answer:
Frequency of the sound = 22.97 kHz
Explanation:
Sound waves are traveling waves and they can be modeled as
A(r, t) = A₀(r)sin(kr - ωt + ∅₀)
Where A₀ is the initial amplitude of the wave, r is the distance, ωt is the frequency and ∅₀ is the initial phase shift
First we need to find out the phase difference (Δ∅) between two waves at different distances.
Δ∅ = 2πΔr/λ + Δ∅₀
When you stand centered between the two waves you hear maximum intensity of sound so the the two waves must be in phase
Δ∅ = 2πΔr/λ + 0
λ = 2πΔr/Δ∅
The distance when listening in front of the speakers is given by
Δr = r2 - r1
r1 = 6.0 mm = 0.006 m
r2 = √(0.012²+0.006²) = 0.0134 m
Δr = r2 - r1 = 0.0134 - 0.006 = 0.0074 m
λ = 2π*0.0074/Δ∅
The phase difference Δ∅ = π
λ = 2π*0.0074/π
λ = 0.0148 m
As we know the relation between frequency and wavelength is given by
f = c/λ
Where c = 340 m/s is the speed of light
f = 340/0.0148
f = 22973 Hz
f = 22.97 kHz
Answer:
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Explanation:
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The "2" tells us that there are 2 hydrogen atoms in this compound.
Explanation:
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Given
mass of each arrow=0.1 kg
velocity of arrow=30 m/s
One arrow is fired u=due to east and another towards south
Momentum of first arrow
Total momentum P
magnitude
direction
clockwise w.r.t to east
Answer:
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Explanation: