A uniform cylinder of radius R, mass M, and length L rotates freely about a horizontal axis parallel and tangent to the cylinder, as shown below. The rotational inertia of the cylinder about this axis is
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a.
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b.
d
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Quintessence is the name of the
a. force that lead to the inflationary period of the universe. b. five dimensional space of the universe. c. force suspected to cause the current acceleration in the rate of expansion of the universe. d. one of the particles of dark matter related to WIMPs. e. the force that holds the proton together.
A boy scout will be burned more severely by
A) 100 g of water at 100°C. B) 100 g of steam at 100°C. C) both about equally D) neither of these
The amplitude of a sound wave is closely related to
A) loudness. B) pitch. C) quality. D) timbre. E) all of the above
A hollow cylindrical (inner radius = 2.0 mm, outer radius = 4.0 mm) conductor carries a current of 24 A parallel to its axis. This current is uniformly distributed over a cross section of the conductor. Determine the magnitude of the magnetic field at a point that is 5.0 mm from the axis of the conductor
a. 0.96 mT b. 1.7 mT c. 0.55 mT d. 1.2 mT e. 0.40 mT