The increase in tensile and shear yield strength due to the strain hardening of metals is proportional to the dislocation density to the _________ power.
Fill in the blank(s) with the appropriate word(s).
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Resistors in Combination: Three light bulbs, A, B, and C, have electrical ratings as follows:Bulb A: 96.0 W, 1.70 ABulb B: 80.0 V, 205 WBulb C: 120 V, 0.400 AThese three bulbs are connected in a circuit across a 150-V voltage power source, as shown in the figure. Assume that the filament resistances of the light bulbs are constant and independent of operating conditions. What is the equivalent resistance of this combination of bulbs between the terminals of the power source?
A. 61.5 ? B. 15.3 ? C. 74.0 ? D. 86.2 ? E. 364 ?
Solenoid: An ideal solenoid that is 34.0 cm long is carrying a current of 2.00 A. If the magnitude of the magnetic field generated at the center of the solenoid is 9.00 mT, how many turns of wire does this solenoid contain? (?0 = 4? × 10-7 T ? m/A)
A. 860 B. 1590 C. 2320 D. 3180 E. 1220
Power: The resistivity of gold is 2.44 × 10-8 ? ? m at a temperature of 20°C. A gold wire, 1.8 mm in diameter and 14 cm long, carries a current of 480 mA. What power is dissipated in this wire at 20°C?
A. 0.31 mW B. 0.077 mW C. 0.14 mW D. 0.19 mW E. 0.25 mW
Picnickers see a lightning flash of an approaching thunderstorm and hear the thunder 8.0 s later
a. Approximately how far away, in miles, is the storm? b. If the storm is moving at a speed of 10 mi/h and the picnickers take 20 minutes to finish eating and pack, will they get wet?