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MBA, Ph.D in Management
Harvard university
Feb-1997 - Aug-2003
Professor
Strayer University
Jan-2007 - Present
A bright object and a viewing screen are separated by a distance of 88.5 cm .
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At what distance(s) from the object should a lens of focal length 17.0 cm  be placed between the object and the screen in order to produce a crisp image on the screen?
Express your answer using three significant figures. If there is more than one answer, enter your answers in ascending order separated by commas.
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