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PH 223 28:1-3

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by

Richard Datwyler

on 11 February 2019

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Transcript of PH 223 28:1-3

a proton is released from rest at the positive plate of a parallel plate capacitor. It crosses the capacitor and reaches the negative plate with a speed of 50000m/s. What will be the final speed of an electron release from rest at the negative plate?
What is the electric potential energy of the proton if the electrons are fixed
.5 nm
.5 nm
2 nm
-e
-e
+p
What is the electric potential energy of the group of charges here
3 cm
3 cm
3 cm
-2 nC
-2 nC
+1 nC
What if they were all negative?
"What kind of real world applications are their for knowing the potential of a dipole?
"True/ False. The electric potential energy drops in going from the positive plate to the negative plate in a capacitor.

Why is this false? Am I misinterpreting Figure 28.5 in the text?"
PH 121 Speed of a Pendulum

F=ma
Kinematics
Energy !!
A proton is released inside a capacitor that has a constant electric field of 50,000 N/C. If the distance between the charged plates is 0.5 mm, what speed does it reach on impact?
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