Two charged particles Qa=20uC and Qb=30uC are separated by a distance r=10cm.What is the magnitude of the electrostatic force?
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F=9×10 ^9×Qa×Qb/r^2
F=9×10 ^9×20×30/10^2
F=9×10 ^9×600/100
F=9×10 ^9×6
F=54×10 ^9 Coulomb's
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