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posted by  larios on 10/11/2007 10:30:44 PM  |  status: Live  

Help please! frequency and wavelength

Course Textbook Chapter Problem
General Chemistry N/A N/A N/A
Question Details:
Find the velocity of an electron emitted by a metal whose threshold frequency is 2.29×1014 {\rm s^{-1}} when it is exposed to visible light of wavelength 4.82×10−7 {\rm m}.

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posted by Sara2029 on 10/11/2007 10:58:07 PM  |  status: Live
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larios's comment:
"thanks"
Response Details:
to do this questoin, u just need to multiply the values...coz if u noticed the units of the values when multiplied will give the unit of velocity, which is m s-1...
 
v= f λ...
the answer is= 1.1 X 108
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posted by Cynthia0612 on 10/11/2007 10:59:34 PM  |  status: Live
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larios's comment:
"thanks"
Response Details:
velocity = frequency x wavelength.
 
2.29x10^14  x   4.82x10^-7  = 1.10x10^8 m/s
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