Asked by tyger2020
In order to wake a sleeping child, the volume on an alarm clock is tripled. Under this new scenario, how much more energy will be striking the child's ear drums each second?
A. twice as much
B. three times as much
C. approximately 4.8 times as much
D. six times as much
E. nine times as much
What do I need to know to find this?
A. twice as much
B. three times as much
C. approximately 4.8 times as much
D. six times as much
E. nine times as much
What do I need to know to find this?
Answers
Answered by
bobpursley
you need to know sound power is directly proportional to sound amplitude(intensity) squared
Answered by
Mazda
Answer is E.
Volume is directly proportional to amplitude of sound. Energy is proportional to amplitude squared. If you triple the amplitude, you multiply the energy by 9.
Volume is directly proportional to amplitude of sound. Energy is proportional to amplitude squared. If you triple the amplitude, you multiply the energy by 9.
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