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From: Jeff Senn <senn@maya.com>
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Subject: Flying terminator (was: Re: Cups)
Date: 23 Nov 1999 15:12:54 -0500
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Felix Hagemann <fx@coop-x.de> writes:

> Wes Hardaker <wjhardaker@ucdavis.edu> writes:
> 
> > Homework: If the terminator is flying westward around the world, how
> > fast must he be flying to ensure that the explosion is always just
> > behind him?
> 
> At what altitude does a standard terminator fly? ;-)

Darn it -- always something! I missed altitude:

 (1666.67 + (km_of_altitude_above_sea_level/12)) * cos(abs(lat)) KPH

...assuming no wind :-)

(Boy, I haven't had a discussion quite this pointless on a list for
quite awhile; I must be getting old...)
-- 
-Jas