An RLC series circuit has a 400
resistance, a 2.5 mH inductor, and a capacitor. If the circuit is in resonance at 30 kHz and is attached to a 20 mV rms power supply, what is the power dissipated by the circuit?
A. 1.0 
W
B. 2.0 W
C. 24 mW
D. 1.2 W
E. 1.2 mW
A. 1.0 W
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A 12000-N car is raised using a hydraulic lift, which consists of a U-tube with arms of unequal areas, filled with oil with a density of 800kg/m3 and capped at both ends with tight-fitting pistons
The wider arm of the U-tube has a radius of 18.0 cm and the narrower arm has a radius of 5.00 cm. The car rests on the piston on the wider arm of the U-tube. The pistons are initially at the same level. What is the force that must be applied to the smaller piston in order to lift the car after it has been raised 1.20 m? For purposes of this problem, neglect the weight of the pistons. A) 0.954 kN B) 1.88 kN C) 1.96 kN D) 3.67 kN E) 1.20 kN
Millisecond pulsars are never members of close binary systems
Indicate whether the statement is true or false
An auto moves at a steady 50 mph down a straight level road. The net force on the auto is
A) downward. B) forward. C) sideways. D) zero. E) backward.
Since the rate of heat transfer by conduction is proportional to the ?T, what percent savings in your heating bill would you expect if you turned the thermostat down from 75° to 65°F, and the outside temperature is 25°F?
a. 10% b. 20% c. 30% d. 40% e. 50%