*27. ssm A charge of -3.00 µC is fixed in place. From a horizontal distance of 0.0450 m, a particle of mass 7.20 x 10-3 kg and charge -8.00 µC is fired with an initial speed of 65.0 m/s directly toward the fixed charge. How far does the particle travel before its speed is zero?

 

Conservation of energy gives us

 

 

We know all but ra, so solve for that

 

 

 

 

 

The distance moved is found from

 

 

 

 

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This page last updated on June 11, 2018