- #1

kittyNoel

- 8

- 0

## Homework Statement

A sample of two different irons, Fe2+ and Fe3+, are accelerated by the same potential and then sent through the uniform magnetic field of a mass spectrometer.

a) Which ion moves faster after being accelerated? Justify your answer by referring to equations used in this lesson.

b) Which ion follows the path with the largest radius? Justify your answer.

## Homework Equations

m = q(

**B**^2)(r^2)/2

## The Attempt at a Solution

a)

Ee = Ek

Ee1 = 1/2 m1v1^2

Ee2 = 1/2 m2v2^2

1/2m1v1^2 = 1/2 m2v2^2

This means that the two particles both have the same potential energy... but one of the particles has more mass than the other... since it has more mass it takes more energy to move it and so moves slower...

This makes sense to me but how do I know which one has more mass? This answer also doesn't use the equation I included above which is the one from the unit that I think they want us to use...

c) The equation m = q(

**B**^2)(r^2)/2 tells us that the heavier particles are deflected in an arc with a larger radius than lighter particles. This means that ____ (again I need to know which one is heaver) follows a path with a larger radius.