Two longitudinal waves: s1 = 3cos(11t) & s2 = 3cos(10t) interfere. What is the amplitude of the resulting wave? a) 6cos(0.5t) b) 6sin(0.5t) c) 6cos(10.5t) d) 6sin(10.5t)

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Two longitudinal waves: s1 = 3cos(11t) & s2 = 3cos(10t) interfere. What is the amplitude of the resulting wave?

a) 6cos(0.5t)

b) 6sin(0.5t)

c) 6cos(10.5t)

d) 6sin(10.5t)

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