A sound intensity of 70 dB is observed at a distance d from the source of sound. What sound intensity would be observed at a distance 2d from the source?

a. 68 dB b. 67 dB
c. 64 dB d. 62 dB


c

Physics & Space Science

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What is the self-inductance in a coil that experiences a 3.0-V induced emf when the current is changing at a rate of 37 A/s?

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