Re: [Phys-l] real-world problem and other questions about Car Talk

[brian whatcott <betwys1@sbcglobal.net>]

Nope. That's not right either!   :-)

Brian W

On 2/5/2011 3:46 PM, brian whatcott wrote:
> 3.9E-3 DeltaR/DegC X 5E1 DegC = 2.0E-2 deltaR??
>
> Brian W
>
>
> On 2/5/2011 9:49 AM, Bernard Cleyet wrote:
> > I suspected not enuf change in resistance, but calc'd and find quite reasonable.  The starter on oldies is bolted to a frame, as part of the engine case, so reasonable conductive path from the cylinders.  So a 50 C change is not unreasonable, which results in an ~ 20% change in Cu resistivity.
> >
> > [3.9 E-3 /C]
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