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A 20.9 m long string is clamped at both ends and under 9.3 N of tension....

A 20.9 m long string is clamped at both ends and under 9.3 N of tension. It supports standing waves at 40 Hz and 50 Hz. a. What is the string's mass density in g/m? b. How many nodes are on the string when the 40 Hz standing wave occurs? 0,1,2,3,4, or 5.

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2レ 2L- 2 2L

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