Electric Fields Test Review

# The e field is created by two very very long parallel

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A proton enters an E-Field traveling at 30% the speed of light. The E-Field is created by two very very long parallel metal plates that are 5x10 -4 meters apart. The plates create a field with strength 1000 N/C. An electron enters the field at 50% the speed of light from the same location the proton entered the field. Which particle travels farther before hitting a metal plate? How much farther does that particle travel? The proton travels about 7.454 meters farther 17) A proton starts from rest in an E-Field with a strength of 10,000N/C. After the proton travels the length of the field, 0.2m, it collides inelastically with another helium nucleus (2 protons, 2 neutron (mass neutron is same as a proton for this problem, but a little different in real life)) which is initially at rest. What is the velocity of the proton and Helium nucleus after the collision? 123,811.72 m/s (PS: A REAL E-FIELD WOULD NOT START AND END SO ABRUPTLY) 18) The plate on the left creates a field that applies a force on charge q. The angle between the plate and the string is 5°. The hanging sphere has a mass of 0.03kg and a charge of 6.4x10 -5 C. What is the magnitude of the Electric Field created by the plate? 401.9 N/C 5x10 -4 m 3.5x10 -4 m
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