Two air columns, one open at both ends (A) and one closed at one end (B) have the same fundamental frequency. If the length of column A is 0.74 m, determine the length of column B.

0.37 m

Explanation:

The fundamental frequency of an open tube or pipe is

where v is the velocity of sound and l is the length of the column.

For a closed pipe,

For column A,

For column B,

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