Chapter 12
1
5 8 9 14 16 24 25 29 30 34 36 39 42 49 51 59 |
340 m
55 m 1.0 W/m^2 @20 dB 1.0 x 10^-10 W/m^2 63 dB 5.0 x 10^-12 W 6300 yr 990 W 280 m 87 N f1 76.6 Hz f3 230 Hz f5 383 Hz f7 536 Hz f1 153 Hz f2 306 Hz f3 459 Hz f4 612 Hz a. 0.18 m from the nut of the guitar b. 1.1 m freq 440 Hz so wavelength is 0.78 m a. 0.656 m b. 262 Hz wavelength 1.31 m c. same answer CLOSED PIPE b. 88.0 Hz 4.3 m Off by + or – 0.50 Hz 346 Hz a. 1690 Hz b. 1410 Hz @ 15 m.s 2091 and 2087 @ 150 m/s 3550 Hz and 2870 m/s @300 m/s 16000 Hz and 3750 Hz a. 110 m/s b. 260 m/s |