Question

5 x 10-19 C.
3. Two point-like charges a and b whose strengths are equal
in absolute value are positioned at a certain distance
from each other. Assuming the field strength is positive
in the direction coinciding with the positive direction of
the r axis, determine the signs of the charges for each
distribution of the field strength between charges shown
in Figs. (a)-(d).
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Answer 1

Answer:

I don't know

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