- #1

Yoseph Santoso

- 19

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There is a multiple choices question about traveling wave in my book.

Based on the graphic, if T = 2s, the wave equation is ...

My answer :

ω = 2π/T = 2π/2 = π

k = 2π/λ = 2π/4 = 0,5π → in my country, we use comma (,) for point (.)

y = ±A sin (ωt - kx)

y = -0,5 sin (πt - 0,5πx)

y = -0,5 sin π(t - 0,5x)

but the answer on my book is B. Could we throw the negative anyway?

Based on the graphic, if T = 2s, the wave equation is ...

My answer :

ω = 2π/T = 2π/2 = π

k = 2π/λ = 2π/4 = 0,5π → in my country, we use comma (,) for point (.)

y = ±A sin (ωt - kx)

y = -0,5 sin (πt - 0,5πx)

y = -0,5 sin π(t - 0,5x)

but the answer on my book is B. Could we throw the negative anyway?

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