What beat frequencies, in hertz, will be present in the following situations:   A) If the musical notes A and C are played together (frequencies of 220 and 264 Hz)? B) If D and F are played together (frequencies of 297 and 352 Hz)? C) An out of tune low C (128.3 Hz) and middle C (264 Hz)?

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Interference of sound

Seiche

A seiche is an oscillating standing wave in a body of water. The term seiche pronounced saysh) can be understood by the sloshing of water back and forth in a swimming pool. The same phenomenon happens on a much larger scale in vast bodies of water including bays and lakes. A seizure can happen in any enclosed or semi-enclosed body of water.