Two equally charged particles, held 4.4×10−3 m apart, are released from rest. The initial acceleration of the first particle is observed to be 5.7 m/s2 and that of the second to be 7.5 m/s2. If the mass of the first particle is 5.4×10−7 kg, what are (a) the mass of the second particle and (b) the magnitude of the charge of each particle? (a) Number Units (b) Number Units