A sound whispered at one focus of a whispering gallery can be heard at the other focus.
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A sound whispered at one focus of a whispering gallery can be heard at the other focus. The figure shows a whispering gallery whose cross section is a semielliptical arch with a height of 24 feet and a width of 80 feet. How far from the room’s center should two people stand so that they can whisper back and forth and be heard?
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b24 b 576 2a 80 a 40 a 1600 ca...View the full answer
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