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1) At a distance rl from point charge the magnitude of the electric field created by charge is 248 N/C. After a distnace r2 from the charge, the...

1) At a distance rl from point charge the magnitude of the electric field created by charge is 248 N/C. After a distnace r2 from the charge, the field has a magnitude of 132 N/C. Find ration r2/r1



2)What is the electric field strength at a point in space where a proton (m=1.67x10^-27) experiences an acceleration of 1 million "g"?



3)The positive charge is q=+6.0 x10^-8 amd experiences a force F1=12.0x 10^-8. Predict the force that a charge +24x10^-8 C would experience if it replaced q.



4)What is the magnitude and direction of electric field at point midway between a -8.0uC and +7uC charge 8.0 cm apart? Draw a free body diagram



5) Two charged smoke particles exert a force of 4.2x10^-2 N on each other. What will be the force if they are moved so they only 1/8 as far apart?



6) The charges of two identical aluminum speheres are -24uC and +4.0uC. The spheres are brought together so they simultaneously touch each other. They then seperated and placed on the X-axis. What is the net force exerted b one sphere on another after seperation?

This question was asked on Apr 28, 2010.

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