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.
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
For a 25 volume %mixture
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.