Physics

Cassie Knight

19 October, 10:25

A sound whispered at one focus of a whispering gallery can be heard at the other focus. Two people are standing in a whispering gallery whose cross section is a semielliptical arch with a height of 28 feet and a width of 90 feet. How far from the room's center should they stand so that they can whisper back and forth and be heard?

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