two 1.5cm diameter disks are parallel to each other, 1.5mm apart. they are chang

Question

two 1.5cm diameter disks are parallel to each other, 1.5mm apart. they are changed +9.0nC. PART:A answer :5.75*10^6 NEED part B and C

01-4 Problem 20.60-MC Part B discs? Express your answer using four significant figures View Available Hint(s) Part C A proton i s shot from the negative disk toward the postive disk What launch speed must the proton have to just barely reach the positive disk? Assume the weight of the proton is negigible Express your answer using three significant figures View Available Hintts)

Explanation / Answer

Electric field=V/d

V=Q/C

C=epsilon*area/d =>V=Qd/(epsilon*area)

E=Q/(epsilon*area)

Force=eE=2.3*10^(-13) N

Part C

a=force/mass=1.38*10^(14) m/s^2

Speed=v=sqrt(2*a*1.5*10^(-3))=6.43*10^5 m/s

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