what is the amplitude of the resultant wave?

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1. Two waves having the same frequency, wavelength, and amplitude are traveling in the same direction. If they differ in phase by I?/2 and each has an amplitude of 0.05 m, what is the amplitude of the resultant wave?
2. The constant g for helium (and all monatomic gases) is 1.67. If a man inhales helium and then commences to speak, he sounds like Alvin of the Chipmunks. Why?

    • 8 years ago
    what is the amplitude of the resultant wave
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