If positive electric charges of and
coulombs are situated at positions
and
, respectively, then the force of repulsion they experience is given by
where
,
is given in newtons, and all positions are measured in meters. Assume that a charge of 8 coulombs is situated at the origin and that a second charge of 15 coulombs is situated
and moving in the
direction at 1.4 meters per second. How fast is the electrostatic force it experiences decreasing? NOTE: Please enter your answer without the units. Round the answer to the nearest trillion.
Correct Answer:
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