A speaker is emitting energy in the form of sound, at a rate of 200 J every second. If you were 15 m from the speaker, and your ear was pointing directly to the speaker (so sound waves enter directly into your ear canal), how much "sound-energy" (energy in the form of sound) enters your ear canal per second? Assume your ear canal is cylindrical with a diameter of 0.7 cm.
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Sound Intensity concept. You can view video lessons to learn Sound Intensity . Or if you need more Sound Intensity practice, you can also practice Sound Intensity practice problems.
How long does this problem take to solve?
Our expert Physics tutor, Juan took 3 minutes and 45 seconds to solve this problem. You can follow their steps in the video explanation above.