- #1

phys-lexic

- 29

- 0

**webassign even my ta's didn't know what to do... ?... and I am in intro to physics**

## Homework Statement

A 33 ohm resistor is made from a coil of Cu wire whose total mass is 12g. (a)What is the diameter of the wire and (b) how long is it ? ( give you answer in m)

## Homework Equations

one equation my ta tried to use was (R) = (resistivity) x (L/A)

## The Attempt at a Solution

no idea... we can't figure out where to go because the equation has both length and radius (in the equation for A of the cross section of the wire) as variables... this is the only question left on my webassign and i have 30 mins left... please help