How Do You Calculate the Mass of an Atom Using a Mass Spectrometer?

[itsmarasilly]

Homework Statement

A mass spectrometer analyzes and gives data for a beam of doubly ionized atoms. The values are q = 2(1.60 x 10^-19 C), B = 5.0 x 10^-2 T, r = 0.120 m, and V = 3442.9 V. Find the mass of one of these atoms.

Homework Equations

B^2*q*r^2 / 2*v

The Attempt at a Solution

(5x10^-2)^2*2(1.6*10^-19)*(0.120)/2(3442.9)

 

[Redbelly98]

Homework Statement

A mass spectrometer analyzes and gives data for a beam of doubly ionized atoms. The values are q = 2(1.60 x 10^-19 C), B = 5.0 x 10^-2 T, r = 0.120 m, and V = 3442.9 V. Find the mass of one of these atoms.

Homework Equations

B^2*q*r^2 / 2*v

Sorry, but I can't tell what the equation you wrote here is supposed to represent.

What is the formula for path radius given m, q, v, and B? It should be in your textbook.

The Attempt at a Solution

(5x10^-2)^2*2(1.6*10^-19)*(0.120)/2(3442.9)

And that equals what?