GR8677 #4



Alternate Solutions 
syreen 20130923 20:27:12  the argument looks like a traveling wave sin(wtkx) where w=1/T, k=1/lamda. Know that vphase=w/k and so w/k=lamda/T  

Comments 
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I know this is long winded but these little details might be nice for someone that isn't comfortable with shifting.
Prologue 20091012 10:54:45 
That should logically be a but it doesn't change the rest of the post at all.

  anmuhich 20090319 08:39:59  Or you just know that for a sine wave the velocity is just the wavelength over the period.   icelevistus 20070927 16:29:19  The only variables/constants we can assume the units of are x and t. All others are unspecified, despite what convention suggests.
Thus, the application of dimensional analysis for eliminating answers only works for D.
icelevistus 20070927 16:30:20 
Never mind, the units are implicit for the sin argument to be unitless.

 

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