Re: [Phys-l] Clarification: A ball at the center of a planet

["Rauber, Joel" <Joel.Rauber@SDSTATE.EDU>]

They probably did give their instructors ulcers.  I wonder if that is a pre-condition for wanting to get your Phd in Physics.

:-)

_________________________

Joel Rauber, Ph.D 
Professor and Head of Physics
Department of Physics
South Dakota State University
Brookings, SD 57007
Joel.Rauber@sdstate.edu 
605.688.5428 (w)
605.688.5878 (fax) 


> -----Original Message-----
> From: phys-l-bounces@carnot.physics.buffalo.edu [mailto:phys-l-
> bounces@carnot.physics.buffalo.edu] On Behalf Of Fakhruddin, Hasan
> Sent: Monday, October 04, 2010 12:32 PM
> To: Forum for Physics Educators
> Subject: [Phys-l] Clarification: A ball at the center of a planet
>
> Alright folks,  Here is a little modification:
>
> A solid elastic rubber ball is a perfect sphere of radius r in free
> space.  A solid homogeneous spherical massive run away planet also in
> free space has a spherical cavity formed at its center.  The cavity is
> much larger than the ball and has vacuum in it.  The ball is now
> transported to the center of the planet.  Its radius now is
> (A) > r
> (B) < r
> (C) = r
>
> (now come on....don't ask me to define free space)
>
> How did you guys ever take any exam without giving your instructor
> ulcers?!
>
> 'Burp'....excuse me; I just took Alka-Seltzer!
>
> ~ Hasan Fakhruddin
> Instructor of Physics
> The Indiana Academy for Science, Mathematics, and Humanities
> Ball State University
> Muncie, IN 47306
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