1. Using Density to Find the Thickness of a Wire
Part 1
Find the density of copper

2. Using Density to Find the Thickness of a Wire

3. Using Density to Find the Thickness of a Wire
What is the slope of your graph?
slope = Δy / Δx
slope = y2 – y1 / x2 – x1
slope = rise / run
Slope = mass / volume = density

4. Using Density to Find the Thickness of a Wire
The slope of your graph is the density of copper.

5. Using Density to Find the Thickness of a Wire
The “official” density of copper
8.96 g/ml

6. Using Density to Find the Thickness of a Wire
Percent Error

7. Using Density to Find the Thickness of a Wire
Percent Error
calculated official
value value
X 100% = % error
official value

8. Using Density to Find the Thickness of a Wire
Part 2
Find the thickness of a wire

9. Using Density to Find the Thickness of a Wirev
r = πh
v = m/d d = 8.96 g/ml

10. Using Density to Find the Thickness of a Wirev
diameter = 2 πh
v = m/d d = 8.96 g/ml