5. From the Edmund Scientific catalog you can buy a parabolic microphone that will "pull in voices up to three-quarters of a mile away." The 18.75-in.- diameter plastic shield reflects sound waves to a microphone located at the focus. Given that the microphone is located 6 in. from the vertex of the parabolic shield, find the equation for a cross section of the shield. What is the depth of the shield?

5. From the Edmund Scientific catalog you can buy a parabolic microphone that will "pull in voices up to three-quarters of a mile away." The 18.75-in.- diameter plastic shield reflects sound waves to a microphone located at the focus. Given that the microphone is located 6 in. from the vertex of the parabolic shield, find the equation for a cross section of the shield. What is the depth of the shield?

Elementary Geometry for College Students

6th Edition

ISBN:9781285195698

Author:Daniel C. Alexander, Geralyn M. Koeberlein

Publisher:Daniel C. Alexander, Geralyn M. Koeberlein

Chapter6: Circles

Section6.3: Line And Segment Relationships In The Circle

Problem 38E: The center of a circle of radius 3 inches is at a distance of 20 inches from the center of a circle...

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