Please answer 6 7 and 8. Show step by step. The note A4 has a frequency of 440 w

Question

Please answer 6 7 and 8. Show step by step.

The note A4 has a frequency of 440 work. What is the wavelength of this sound wave? Show your 6· 7. A sound wave with intensity 2.0x10 W/m is perceived to be modestly loud. Your eardrum is 6.0 mm in diameter. How much energy will be transferred to your eardrum while listening to this sound for 1.0 min? Show your work 8. During takeoff, the sound intensity level of a jet engine is 140 dB at a distance of 30 m.What is the sound level intensity at a distance 1.0 km? Show your work

Explanation / Answer

6) wavelength = Velocity / frequency

= 343 / 440 = 0.78 m

the wavelength is 0.78 m

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