Susan is cleaning her house and dust particles are released into the air while she dusts. If two 7.0×10-14C pieces of dust exert an electrostatic…

Susan is cleaning her house and dust particles are released into the air while she dusts. If two 7.0×10-14C pieces of dust exert an electrostatic force of 5.0×10-12N on each other, how far apart are the dust particles at that time?