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Physics, 09.10.2019 18:50 biancabahena04

If 20 beats are produced within one second, which of the following frequencies could possibly be held by two sound waves traveling through a medium along a common path at the same time
a. 22 hz and 42 hz
b. 47 hz and 55 hz
c. 38 hz and 63 hz
d. 18 hz and 26 hz?

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