Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
13 Cards in this Set
- Front
- Back
|
15.18---speed of sound in dry air
|
348.3 m/s
|
|
|
15.14---shortest and longest wavelengths in air
|
longest----680 cm shortest----2 cm
|
|
|
15.04--wavelengths of radio signals
a.) FM b.)AM c.) shortwave station |
a.) 3.08 m
b.) 536 m c.) 25.2 m |
|
|
15.20----distance from loudspeaker--how far must you be
|
17.32 m
|
|
|
15.34----speed of train/whistle
a.)apparent frequency b.)change in frequency |
a.) 2200 Hz
b.) 400 Hz |
|
|
15.39---source moving toward you at ground speed
*frequency you hear |
2656 Hz
|
|
|
15.49----guitar string stretched between supports
*fundamental frequency |
510 m/s
|
|
|
15.55---steel wire stretched between 2 supports
a.) fundamental wavelength b.) fundamental frequency c.) wavelength of fundamental frequency in air |
a.) 2.0 m
b.) 1025 Hz c.) 0.33 m |
|
|
15.61---hollow pipe---open at both ends and 36 cm long
*first three overtones |
470 Hz, 940 Hz, 1420 Hz, 1890 Hz
|
|
|
15.63-- fundamental and first three overtones of hollow pipe of 25 cm long and closed at one end
|
340 Hz, 1020 Hz, 1700 Hz, 2380 Hz
|
|
|
15.71--- ratio of sound intensities
|
316
|
|
|
15.73--rewrite expression of speed of sound--temp. of degrees in Farhenheidt
|
[1052.2 + 1.1 T (F)] ft/s
|
|
|
15.66---two tuning forks sounded at same time
*frequency of other ones |
260 Hz
|
