Which of these is the correct way to find the number of neutrons in one atom of Iron? * A-Read the number 26 off the periodic table square
B-Read the number 56 off the periodic table square
C-56-26 = number of neutrons
D-55-26 = number of neutrons

Atotal charge of –6.50 µc is uniformly distributed within a sphere that has a radius of 0.150 m. what is the magnitude and direction of the electric field at 0.300 m from the surface of the sphere? a) 2.89 × 105 n/c, radially inward b) 6.49 × 105 n/c, radially outward c) 4.69 × 105 n/c, radially inward d) 9.38 × 105 n/c, radially outward e) 1.30 × 106 n/c, radially inward