- #1

Sir Bro

- 15

- 0

## Homework Statement

Decay of Carbon-11 from given data of count rate at time 0 to count rate at time 14 minutes in 2 minute intervals.

## Homework Equations

I feel like I've gone wrong here because the answer I get of 19.6 minutes is actually negative if I go back and do the last equation again. I think I need to be using the gradient of the graph rather than the gradient I found from two points for my calculations; it ends up giving a positive result when subbed into the last equation but turns up completely wrong compared to secondary data. Can anyone see where I went wrong?