± A Proton between Oppositely Charged Plates Part A A unilorm electric old exist

Question

± A Proton between Oppositely Charged Plates Part A A unilorm electric old exists in the region between to oppositely charged parallel plates 162 em apart A proton is released from rest at the surface of the positively charged plate and strikes the surface of the opposite plate tirne Find the magnitude of the electric field Use 1.60-10-19 C for the magnitude of the charge on an electron and 1.67 10kg for the mass of a proton Hints nderval 1.57-10- N/C My Answers Give Up Part B Find the speed of the proton alt the moment it strikes the negatively charged plate Hints Contnue

Explanation / Answer

Part A:

Use the following expression to find the acceleration -

s = ut + (1/2)at^2
0.0162 = 0 + (1/2)a x (1.57×106)^2

=> a = (2x0.0162) / (1.57x10^-6)^2 =
a = 1.314 x 10^10 m/s^2

Now, find the force using F = ma
F = 1.67×1027 x 1.314x10^10
= 2.194 x 10-17 N

Again, find the electric field using E = F/Q
E = 2.194x10-17 / 1.60x10^-19
=137.15 N / C

Part B:

Use the expression -
v = u+at
=> v = 0 + 1.314x10^10 x1.57×10-6
=> v = 2.06 x 10^4 m/s

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