A series RLC circuit has a 100- resistor, 2.0-mH inductor and a 4.0-F capacitor connected across a 120-V rms ac source at 1000/ Hz. What is the power factor of this circuit?
A) 0.54 B) 0.94 C) 0.64 D) 0.84 E) 0.74
Question 2
An 80-kg man is skating northward and happens to suddenly collide with a 20-kg boy who is ice skating toward the east.
Immediately after the collision, the man and boy are seen to be moving together at 2.5 m/s in a direction 60 north of east. How fast was the boy moving just before the collision?
The schematic of a variable valve timing control circuit, showing that battery power (+) is being ...
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Photochemical smog is produced by a complex series of reactions
The figure shows an LR circuit with a switch and a 240-volt battery. At the instant the switch ...