The air in a pipe resonates at 120 Hz and 600 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
b. open: 1; closed: 3
c. open: 2; closed: 0
d. open: 0; closed: 2
e. open: 5; closed: 1
a
You might also like to view...
The ozone layer is our friend because
A) it protects us from damaging ultraviolet radiation. B) it protects us from damaging infrared radiation. C) of the role it plays in keeping Earth warm. D) its electrical properties help to bend radio waves around the earth. E) it protects the earth from undergoing a harmful greenhouse effect.
An important factor in producing and controlling a fission chain reaction is the fact that _________ neutrons are much better a causing fission in uranium-235
Fill in the blank(s) with correct word
The Ga-As phase diagram has a compound GaAs (?-phase) that is a single vertical line at 50 atomic % As. Can ?-phase be produced that has 55 atomic % As? _____________
Fill in the blank(s) with the appropriate word(s).
For stars on the main sequence, the luminosity can be estimated by the formula L = ____________________
Fill in the blank(s) with correct word