about 5.3times 10^-11 m. Find the magnitude of the electric force that each particle exerts on the other. Remember that the charge of an electron is -1.6times 10^-19C and the charge of a proton is +1.6times 10^-19C a. 9times 10^wedge -9N b 8.2times 10^wedge -8N C 10times 10^wedge -7N d. 4.3times 10^wedge -9N