Posted by Sarah on Tuesday, April 3, 2012 at 10:42pm.
Multiply 2*e by the voltage change to get the additional kinetic energy.
deltaKE = 8.00*10^-16 J
initial KE = (Malpha)*Vo^2/2
The alpha particle has a mass of
Malpha
= 4.00g/6.02*10^23 = 6.64*10^-24 g
= 6.64*10^-27 kg
Vo = 7.10^10^5 m/s
initial KE = 1.67*10^-15 J
Add initial KE and delta KE for the final KE.
final KE = 2.47*10^-15 J
Use the final kinetic energy to get the final velocity
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