What is evidence that sound is a form of energy

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Q1: Does the speed of sound in air depend on the frequency? Explain in detail.

Q2: What is evidence that sound is a form of energy?

Q3: What is evidence that sound travels as a wave?

Q4: A loud speaker on a tall pole broadcast sound waves equally in all directions. If the sound output is 5.0 W, at what distance from the loudspeaker is the sound intensity level 90 dB?

Q5: A football fan sits in the upper deck of a large football stadium and has a portable sound device to cheer for his team. The device emits its sound equally in all directions, and it has the property that the sound is loud enough that someone sitting 300 m away on the other side of the stadium can hear it above the crowd noise of 80 dB. Why do you not want to be sitting 1 m in front of the fan?

Reference no: EM132599982

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