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# PHYS 121 Study Guide - Comprehensive Final Exam Guide - Euclidean Vector, Amplitude Modulation, Magnetic Field

Department
Physics
Course Code
PHYS 121
Professor
Michael Chen
Study Guide
Final

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PHYS 121

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Notes
May 8, 2018
8:26 PM
1. Coulomb's Law Page 1
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A point charge q1= -. μC is loated at the oigi of a o-ordinate system. Another point charge q2= . μC is loated
along the x-axis at a distance x2= 8.4 cm from q1.
What is F12,x, the value of the x-component of the force that q1exerts on q2?
1.
2.
A third point charge q3is now positioned halfway between q1and q2. The net force on q2now has
a magnitude of F2,net= 5.456 N and points away from q1and q3. What is the value (sign and
magnitude) of the charge q3?
3.
How would you change q1(keeping q2and q3fixed) in order to make the net force on q2equal to
zero?
4.
How would you change q3(keeping q1and q2fixed) in order to make the net force on q2equal to
zero?
5.
Point Charge in One Dimension
May 9, 2018
7:41 PM
1. Coulomb's Law Page 2
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