Problem 6: Two students are standing the same distance from a source of sound. The first...

Problem 6: Two students are standing the same distance from a source of sound. The first student receives a power of 246 × 10^-6 W in their eardrum. The second student receives σ = 1.17 times more power in their eardrum.

Part (a) What is the ratio of the diameters of the student's eardrums?

Part (b) If the second student's eardrum has a diameter of d = 1 cm what was the intensity of the sound that the student heard, in watts per square meter?

Problem 7: The softest sound a human ear can hear is at 0 dB (I_o = 10^-12 W/m²). Sounds above 130 dB cause pain. A particular student's eardrum has an area of A = 58 mm².

Part (a) What is the most power, in watts, the ear can receive before the listener feels pain?

Part (b) What is the smallest power, in watts, the ear can detect?

Solutions

Expert Solution

genius_generous answered 1 year ago

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