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Two identical pipes, each closed at one end, have a fundamental frequency of 349 Hz at...

Two identical pipes, each closed at one end, have a fundamental frequency of 349 Hz at 20.0°C. A) What is the length of the pipes? B) If the air temperature is increased to 25.0°C in one pipe what is the new fundamental frequency in this pipe? C) If the two pipes are now sounded together, what beat frequency results?

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