Posted by LeXi;) on Thursday, March 29, 2012 at 1:59pm.
wavelength (m) = speed (m/s) / frequency (1/s)
wavelength = 3*10^8m/s / 5*10^9/s
= .6 * 10^-1 = .06m = 6cm
Thank you so much! :]
不客氣
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