A ballerina spins initially at 1.5 revolutions/second when her arms are extended. She then draws in her arms to her body and her moment of inertia becomes 0.88 kg-m2 and her angular speed increases to 4.0 rev/s
Determine her initial moment of inertia.
2.3 kg ? m2
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A. silicate rock found mostly on the surface of Earth B. silicate rock that makes up much of the mantle C. iron-based non-silicate rock that is green in color D. lithium dioxide E. None of these choices are correct.
If you throw a ball straight downward (in the absence of air resistance), after leaving your hand its acceleration is
A) less than 10 m/s2. B) 10 m/s2. C) greater than 10 m/s2.
A system has a heat source supplying heat to an ideal gas at a rate of 187.0 W and the gas is doing work at a rate of 130.9 W. At what rate is the internal (thermal) energy of the gas changing?
A) 56.1 W B) 318 W C) -56.1 W D) 187 W
How tightly the nucleons in a nucleus are bound together is indicated by the nucleus's __________
Fill in the blank(s) with correct word