Path diameter difference of two singly-charged ions in a magnetic field

[fight_club_alum]

Homework Statement

Two single charged ions moving perpendicularly to a uniform magnetic field (B = 0.4 T)
with speeds of 5000 km/s follow circular paths that differ in diameter by 5.0 cm. What is
the difference in the mass of these two ions?
a . 2.6 × 10–28 kg
b. 6.4 × 10–28 kg
c. 3.2 × 10–28 kg
d. 5.1 × 10–28 kg
e. 1.1 × 10–28 kg

Relevant Equations

MV/Qb = r

M1(50,000)/q (0.4) - M2(50,000)/q (0.4) = 0.025

Is there a special charge for singly charged ions?

 

[gneill]

Problem Statement: Two single charged ions moving perpendicularly to a uniform magnetic field (B = 0.4 T)
with speeds of 5000 km/s follow circular paths that differ in diameter by 5.0 cm. What is
the difference in the mass of these two ions?
a . 2.6 × 10–28 kg
b. 6.4 × 10–28 kg
c. 3.2 × 10–28 kg
d. 5.1 × 10–28 kg
e. 1.1 × 10–28 kg
Relevant Equations: MV/Qb = r

Is there a special charge for singly charged ions?

Ask yourself what an ion being singly charged means. What happens to form an ion?