Posted by Anonymous on Friday, April 18, 2008 at 1:55pm.
1a is ok.
1b is ok.
1c. Isn't ALL electromagnetic radiation the speed, c, = 3 x 10^8 m/s.
2.The wavelengths of visible light are, in order of WAVELENGTH, longest wavelength is red and shortest wavelength is violet. This is also the order of lowest frequency to highest frequency.
You can remember this very well with a mnemonic my physics prof taught me 60 years ago (if we include indigo as a color).
The first letters spell a man's name. His name is Roy G. Biv. :-)
1c)no thats the speed of light. to find the speed or whatever I would have to use this
v=f*w for each and put them in order from slow to fast
ok without the work, if A is correct then wouldnt it be the reverse for C? since the wavelength of A is from large to small then the smallest would then generate the lowest speed b/c v=frequency*wavelength? That REALLY makes since to me.
It doesn't make sense to me.
velocity (of light--no matter the color) = 3 x 10^8 m/s.
c = f*w. That's how you calculated frequency and wavelength. For long w, the f must be short. For short w, then f must be high because f*w=c, a constant. Scroll down on the site below to History, and read through that and/or go to www.google.com and type in color of violet light and look at some of the hits you will get. The speed of light is not the same in air or glass or water as it is in a vacuum but it is the same within a medium.
ok I understand why I did it wrong thank you
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