Fysik
help wave,
02. april 2008 af
thekingy (Slettet)
Radio signals travel with the speed of light, approximately 3.00 × 108 m/s.
a. AM radio signals have frequencies between 550 kHz and 1600 kHz. What are the
wavelengths of these signals?
1
b. FM radio signals have frequencies between 88.0 MHz and 108 MHz. What are their
wavelengths?
Exercise 4
A violin string vibrates at concert pitch (440 Hz). What are the frequencies of the rst
four harmonics?
Exercise 5
If two successive overtones are at 280 Hz and 350 Hz, what is the fundamental frequency?
a. AM radio signals have frequencies between 550 kHz and 1600 kHz. What are the
wavelengths of these signals?
1
b. FM radio signals have frequencies between 88.0 MHz and 108 MHz. What are their
wavelengths?
Exercise 4
A violin string vibrates at concert pitch (440 Hz). What are the frequencies of the rst
four harmonics?
Exercise 5
If two successive overtones are at 280 Hz and 350 Hz, what is the fundamental frequency?
Svar #3
02. april 2008 af -Zeta- (Slettet)
Wavelength 'lambda' is inverse proportional with the frequency. Hence we got:
A violin string vibrates at concert pitch (440 Hz). What are the frequencies of the first four harmonics? Use the fact that,
A violin string vibrates at concert pitch (440 Hz). What are the frequencies of the first four harmonics? Use the fact that,
Skriv et svar til: help wave,
Du skal være logget ind, for at skrive et svar til dette spørgsmål. Klik her for at logge ind.
Har du ikke en bruger på Studieportalen.dk?
Klik her for at oprette en bruger.