Chapter 22, Problem 15PE

(a) An oxygen−16 ion with a mass at $\text{2}{\text{.66×10}}^{-26}\text{kg}$ travels at $5.00\times {10}^6\text{m/s}$ perpendicular to a 1.20−T magnetic field, which makes it move in a circular arc with a 0.231-m radius. What positive charge is on the ion? (b) What is the radio of this charge to the charge of an electron? (c) Discuss why the radio found in (b) should be an integer.