The air in a pipe resonates at 150 Hz and 750 Hz, one of these resonances being the fundamental. If the pipe is open at both ends, how many resonances are between the two given ones, and if the pipe is closed at one end, how many resonances are between the two given ones?
a. open: 3; closed: 1
c. open: 2; closed: 0
b. open: 1; closed: 3
d. open: 0; closed: 2
A
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A. F/4
B. F/2
C. F/
D. F
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