energy meters forum

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
 
Registered User
 
Joined: Sunday, 16th of May 2010, 20:11:02
 
Posts: 426
 
Viewed 1437 times
 
Top

emo princess , Wednesday, 11th of August 2010 01:37:01 PM

E = h x v or Energy = planks constant x frequency  
emo princess
 
Registered User
c = v x lamda or speed(light) = frequeny x wavelenght  
Joined: Tuesday, 4th of May 2010, 07:26:02
 
Posts: 714
 
Viewed 11470 times
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  
 
 
 
 
 
Top

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

1.78345 Metres.  
Sugamama
 
Registered User
 
Joined: Saturday, 5th of June 2010, 10:02:14
 
Posts: 539
 
Viewed 6719 times
 
Top

Who is online

Users browsing this forum: 4 guests