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Looking at two sound waves with frequencies: f₁=27 Hz & f₂=10 Hz at a fixed x position, and with a time dependency of: The sum of the two sound waves can be written as the product of two trigonometric functions using the identity: The two resulting trigonometric functions will oscillate at different frequencies. What is the smallest time that results in the superposition of these two waves having a pressure amplitude of zero?
Sagot :
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