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Hi,

My Question:

What are the magnitude and direction of the electric field at a midway between a -8.0 microcolumb and a 7.0 microcolumb charge 8.0 cm apart? Assume no other charges are nearby.

Work

[tex]E=F/q[/tex]

[tex]F=(kQ1Q2)/r^2[/tex]

F=((9.0 X 10^9 N m^2/C)(-8.0 X10^-16 C)(7.0 X10^-6C))/(.08m)^2

F=-78.75 or 78.75 N

E=(78.75N)/(1.6X10^-19C)

E=4.92 x 10^20 N/C

Is this correct or should I look at findin the electric field using Q1 and Q2 seperately then adding them together to find a net elecrical field.

Thank you

My Question:

What are the magnitude and direction of the electric field at a midway between a -8.0 microcolumb and a 7.0 microcolumb charge 8.0 cm apart? Assume no other charges are nearby.

Work

[tex]E=F/q[/tex]

[tex]F=(kQ1Q2)/r^2[/tex]

F=((9.0 X 10^9 N m^2/C)(-8.0 X10^-16 C)(7.0 X10^-6C))/(.08m)^2

F=-78.75 or 78.75 N

E=(78.75N)/(1.6X10^-19C)

E=4.92 x 10^20 N/C

Is this correct or should I look at findin the electric field using Q1 and Q2 seperately then adding them together to find a net elecrical field.

Thank you

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