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Q1. A toy train rolls around a horizontal 1.0--diameter track. The coefficient of rolling friction is 0.10.

What is the magnitude of train's angular acceleration after it is released?

How long does it take the train to stop if it's released with the angular speed of 30 rpm?

Q2. A source emits sound uniformly in all directions. A radial line is drawn from this source. On this line, determine the radial positions of two points, 0.786m apart, such that intensity level at one point is 1.72 dB greater than that at the other. (a) What is the smaller radial position (in m)? (b) What is the larger radial position (in m)?

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  • Category:- Physics
  • Reference No.:- M9165104

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