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Chemistry help?
A wave has a wavelength of 1.73 x 1016 meters. The frequency of the wave is _______Hz
AnD
A wave has a frequency of 2.99 x 105 Hz. The wavelength of the wave is _____ m
1 Answer
- lenpol7Lv 71 year ago
Remember speed of light = 3.0 x 10^8 m/s
And frequency in Hz(Hertz) is 's^-1'
Hence
3.0 x 10^8 m/s = F x 1.73 x 10^16 m
F = 3.0 x 10^8 ms^-1 / 1.73 x 10^16 m
F = 1.73 x 10^(-6) Hz(s^-1)
Similarly
3.0 x 10^8 ms^-1 = l x 2.99 x 10^5 Hz(s^-1)
L = 3.0 x 10^8 / 2.99 x 10^5
L = 1003.3 m