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*From*: David Bowman <David_Bowman@GEORGETOWNCOLLEGE.EDU>*Date*: Sat, 14 Aug 2004 11:22:19 -0400

Oops! I just noticed a small error in my last post. I wrote:

Regarding Jack's comments:

I think that the interesting part of the original problem is that

it requires the solver to realize that plane geometry is not

involved.

I disagree. The radius of curvature of the earth is over 6000 times

the length scale of the problem as it is stated. A flat earth

approximation is quite sufficient.

I accidentally was thinking in terms of kilometers rather than in

terms of miles as the problem stated. I ought to have said that

the radius of curvature of the earth is around 4000 times the

length scale of the problem as it is stated. In any event a flat

earth approximation is still quite sufficient.

David Bowman

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