A firecracker produces a power of 2.5x10³ mw. a. What is the intensity of a firecracker at a distance of 3.00 m from the firecracker? b. How many firecrackers would be required to produce a sound level of 120 db at a distance of 5.00 m from the firecrackers?

A firecracker produces a power of 2.5x10³ mw. a. What is the intensity of a firecracker at a distance of 3.00 m from the firecracker? b. How many firecrackers would be required to produce a sound level of 120 db at a distance of 5.00 m from the firecrackers?

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter17: Sound

Section: Chapter Questions

Problem 33P: A sound wave is modeled with the wave function P=1.20Pasin(kx6.28104s1t) and the sound wave travels...

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