Need help with a problem

  • Thread starter gto6570
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  • #1
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I'm trying to figure out this problem and i am having no luck. Any help would be great.

a) How much voltage would be need, in order to accelerate protons from rest to 5.0x10 to the 6th m/s.
b) what is the kinetic energy of these protons in eV, after they hit the top speed indicated in part a?
 

Answers and Replies

  • #2
Tide
Science Advisor
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The amount of work done by the electric field is [itex]E = q V[/itex].
 
  • #3
try this

Try this,
qV=(m*v^2)/2
q= charge on proton, v= speed, m= mass

Kinetic energy, K= 0.5m*v^2 units will be in joules.
to convert it in eV divide it by 1.67*10^-19.
have better luck this time
 

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