What's the force on charge Q3? Thank you!
1 Answer
Explanation:
it will be useful to remember the fallowing basic information.
- there are two kind of electrical charges(positive and negative.
- the source of positive electrical charges is proton.
- the source of negative electrical charges is electron.
- Electric charges apply mutually force to each other.
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if two electrical charges have the same sign, they will push each other.
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if two electrical charges have the different sign, they will pull each other.
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The force between two electrical charge is calculated using Coulomb's law.
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The electrical charge unit is Coulomb(C).
- The force is directly proportional to the product of the electrical charges.
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The force is inversely proportional to the square of the distance between the electrical charges.
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Force is a vector quantity. We will symbolize each force by drawing a vector.
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#" "1 " "cm=10^(-2) m# #" "1" " mu C=10^(-6) C#
now we can solve the problem.
- The
#color(red)( F_1)# vector indicates the pushing force between the electrical charges Q1 and Q3.
- The
#color(blue)( F_2)# vector indicates the pulling force between the loads Q2 and Q3.
- Now we have to find the vector sum of two forces.
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# vec F_1 +vec F_2=vec F" (vector notation display)"# -
the magnitude of vector can be calculated using pythagorean theorem