A lithotripter of height 15 centimeters and diameter 18
Chapter 11, Problem 52(choose chapter or problem)
A lithotripter of height 15 centimeters and diameter 18 centimeters is to be constructed (see the figure). High-energy underwater shock waves will be emitted from the focus F that is closest to the vertex V. (a) Find the distance from V to F. (b) How far from V (in the vertical direction) should a kidney stone be located?
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