Velocity of proton

  • Thread starter mathcrzy
  • Start date
  • #1
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Homework Statement



What is the speed of a proton whose kinetic energy is 23.0 keV?

1 eV = 1.6e-19 J
23 Kev = 23000 eV = 3.68e-15 J

Homework Equations



V = Sq. Rt. ( - ((2)(q)(Vba)) / (m))

The Attempt at a Solution

 

Answers and Replies

  • #2
rock.freak667
Homework Helper
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Just sub the values into the formula
 
  • #3
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What is each value? What is q, Vba, and M?

Is M = 1.67e-27 kg ?

And where does the KeV value go?
 
  • #4
rock.freak667
Homework Helper
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[tex]E_k=\frac{1}{2}mv^2[/tex]

m=mass of a proton which you have. the eV is just another way to express energy.
 

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