Two sinusoidal waves of the same frequency travel in the same direction along a string. If...

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Two sinusoidal waves of the same frequency travel in the same direction along a string. If y_m1 = 3.9 cm, y_m2 = 6.9 cm, ?₁ = 0, and ?₂ = ?/6 rad, what is the amplitude of the resultant wave? I got this incorrect.

Chapter 16, Proble 035 Yuur answer is partially cu

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Answer 1

Answer #1

y1 = 3.9 cm,
y2 = 6.9 cm,
w1 = 0, and
w2 = pi/6 rad

=> Y = (y1^2 + y2^2 +2*y1*y2*cos X )^0.5

=> Y = (3.9^2 +6.9 ^2 + 2*3.9*6.9*cos(pi/6))^0.5

= 10.46 cm

check the calculation be4 submission

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Answer 2

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