15. Two equally charged particles, held 3.2>

15. Two equally charged particles, held m apart, are released from rest. The initial acceleration of the first particle is 7.0 m/s2 and that of the second is 9.0 m/s2. If the mass of the first particle is kg, what are (a) the mass of the second particle, and (b) the amount of charge on each particle? 16. Beams of high-speed protons can be produced in "guns" using electric fields to accelerate protons. What acceleration would a proton experience if a gun's electric field were 2.00