Soru
Calculate the wavelength in centimeters of (a) an airport tower transmitting at 118.6 MHz. (b) a VOR (radio navigation aid)transmitting at 114.10 kHz. (c)an NMR signal at 105 MHz. (d)an infrared absorption peak with a wavenumber of 1210cm^-1
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Cevap
To calculate the wavelength of electromagnetic waves, we can use the formula:
where
is the wavelength,
is the speed of light in a vacuum (approximately
m/s), and
is the frequency of the wave.Let's calculate the wavelength for each case:(a) For an airport tower transmitting at 118.6 MHz:
To convert this to centimeters:
(b) For a VOR transmitting at 114.10 kHz:
To convert this to centimeters:
(c) For an NMR signal at 105 MHz:
To convert this to centimeters:
(d) For an infrared absorption peak with a wavenumber of 1210 cm
:The wavenumber is the reciprocal of the wavelength in centimeters. Therefore, we can find the wavelength by taking the reciprocal of the wavenumber:
So, the wavelength of the infrared absorption peak is approximately 0.000822 cm.