Point charges q1=50.0μC and q2=-35μC are placed d1=1.0m apart, as shown.
A. A third charge, q3=25μC, is positioned somewhere along the line that passes through the first two charges, and the net force on q3 is zero. Which statement best describes the position of this third charge?
1) Charge q3 is to the right of charge q2.
2) Charge q3 is between charges q1 and q2.
3) Charge q3 is to the left of charge q1.
B. What is the distance, in meters, between charges q1 and q3? (Your response to the previous step may be used to simplify your solution.)
Give numeric value.
d2 = __________________________________________m
C. Select option that correctly describes the change in the net force on charge q3 if the magnitude of its charge is increased.
1) The magnitude of the net force on charge q3 would still be zero.
2) The effect depends upon the numeric value of charge q3.
3) The net force on charge q3 would be towards q2.
4) The net force on charge q3 would be towards q1.
D. Select option that correctly describes the change in the net force on charge q3 if the sign of its charge is reversed while its magnitude is unchanged.
1) The magnitude of the net force on charge q3 would still be zero.
2) The net force on charge q3 would be towards q1.
3) The effect depends upon the numeric value of charge q3.
4) The net force on charge q3 would be towards q2.
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