A lithotriper is used to disintegrate kidney stones. The patient is placed within an elliptical device with
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A lithotriper is used to disintegrate kidney stones. The patient is placed within an elliptical device with the kidney centered at one focus, while ultrasound waves from the other focus hit the walls and are reflected to the kidney stone, shattering the stone. Suppose that the length of the major axis of the ellipse is 40 centimeters and the length of the minor axis is 20 centimeters. How far from the kidney stone should the electrode that sends the ultrasound waves be placed in order to shatter the stone?
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Find the distance between the foci Since 2a ...View the full answer
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