A uniform, solid, cylindrical flywheel of radius 1.4 m and mass 15 kg rotates at What is the magnitude of the flywheel's angular momentum?
A) 60 kg ? m2/s B) 80 kg ? m2/s C) 40 kg ? m2/s D) 20 kg ? m2/s
C
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Which of the following is not true about cold-work?
(a) It increases strength. (b) It produces a good surface finish. (c) It increases ductility. (d) It provides good dimensional tolerance.
For a 25 volume %mixture
In constructing a thermometer it is NECESSARY to use a substance that:
A. expands with rising temperature B. expands linearly with rising temperature C. will not freeze D. will not boil E. undergoes some change when heated or cooled
The average power input to a series alternating current circuit is minimum when
a. there are only a resistor and capacitor in the circuit. b. there are only a resistor and inductor in the circuit. c. there is only a resistor in the circuit. d. XL = XC and the circuit contains a resistor, an inductor and a capacitor. e. there is only a capacitor in the circuit.