what is the wavelength of a photon in meters (m) that has an energy of 5.25*10^14J


Grammy NumNum , Tuesday, 10th of August 2010 06:46:33 AM


:
a) 4.21*10^-24
b)2.64*10^6
c)3.79*10^-7
Grammy NumNum
/>d)2.38*10^23
e)3.79*10^7
 
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emo princess , Wednesday, 11th of August 2010 01:37:01 PM

E = h x v or Energy = planks constant x frequency  
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c = v x lamda or speed(light) = frequeny x wavelenght  
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so E = hc/lamda and therefore lamda = h x c/E  
 
lamda/wavlen = 6.62x10^-34 Js X 3.0x10^8 ms-1/5.25x10^14J  
 
 
= 3.78x10^-40 m  
 
 
 
 
 

Sugamama , Thursday, 12th of August 2010 09:55:02 PM

1.78345 Metres.  
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