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A family ice show is held in an enclosed arena. The skaters performto music playing at a level of 76.0 dB. This intensity level is too loud foryour baby, who yells at 70.5 dB.
(a) What total sound intensity engulfs you?
W/m2
(b) What is the combined sound level?
dB
Suppose that the net horizontal force is because of rolling friction only and take the free-fall acceleration to be g = 9.80 m/s^2. What is the coefficient of friction for the tire under low pressure.
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