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From: Fred Bloggs
X-Mailer: Mozilla 4.7 [en]C-CCK-MCD EBM-Compaq1 (Win95; U)
Subject: Re: Complex number quiz
References: <3D7DBD37.27C9BDEC@ipricot.com> <email@example.com>
Date: Tue, 10 Sep 2002 11:54:03 GMT
NNTP-Posting-Date: Tue, 10 Sep 2002 04:54:03 PDT
Organization: EarthLink Inc. -- http://www.EarthLink.net
> markp wrote:
> >If you want to while away a few more >hours, how about this one:
> >A square field 50m x 50m has a cow in it. >The cow is tethered to a
> >rope that is fixed exactly half way down >one side of the field.
> >The rope is just long enough for the cow >to eat exactly half the
> >grass in the field. How long's the rope?
> Try this one then. This came from an EE magazine many years ago (I think ETI or
> Elektor - not sure which)
> A string of resistors infinitely long thus:-
> 5R | 5R |
> \ \
> / 9R / 9R etc etc etc
> \ \
> / /
> 8R | 8R |
> The right hand side of the chain continues out of the window. What is the
> resistance measured on the left hand side ?
> You can't actually measure it because the electrons would take an infinitely
> long time to travel the circuit so you'll have to calculate it.
> Any takers ?
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