y-5sin-2000pit-0-4x-calculate-the-wavelength-

Question Number 10713 by Saham last updated on 23/Feb/17

y = 5 \sin (2000 π t - 0 . 4 x), calculate the wavelength

Answered by ridwan balatif last updated on 23/Feb/17

y = 5 \sin (2000 π t - 0 . 4 x)

base {formula}^{'} s y = Asin (ω t - kx)

A = 5

ω = 2000 π

k = 0.4

\frac{2 π}{λ} = \frac{2}{5}

λ = 5 π \to wavelength

Commented by Saham last updated on 23/Feb/17

God bless you sir .

Answered by mrW1 last updated on 23/Feb/17

A = 5 m

ω = 2000 π

k = 0.4

f r e q u e n c y f = \frac{ω}{2 π} = \frac{2000 π}{2 π} = 1000 H z

w a v e l e n g t h λ = \frac{2 π}{k} = \frac{2 π}{0.4} = 5 π = 15.7 m

w a v e s p e e d v = λ f = 15.7 \times 1000 = 15700 m / s

Commented by Saham last updated on 23/Feb/17

God bless you sir .

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