An RLC series circuit has a 400
resistance, a 2.50 mH inductor, and a capacitor. If the circuit is in resonance at 30.0 kHz and is attached to a 20 mV rms power supply, what is the rms current?
A. 60
A
B. 40A
C. 30A
D. 50A
E. 25A
D. 50A
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Conversion of Units: A cylindrical drinking glass has a diameter of 2.5 in. and is 5.5 in. tall. What is the volume of the drinking glass in cubic centimeters? (2.54 cm = 1.00 in.)
A. 170 cubic cm B. 440 cubic cm C. 350 cubic cm D. 710 cubic cm E. 530 cubic cm
Consider the following reaction. n ? p + e– This reaction is impossible because it violates which conservation law?
a. baryon number b. lepton number c. strangeness d. charge
What do halo stars do differently from disk stars?
A) They orbit the galactic center with many different inclinations, while disk stars all orbit in nearly the same plane. B) Halo stars explode as supernovae much more frequently than disk stars. C) They remain stationary, quite unlike disk stars that orbit the galactic center. D) They orbit the center of the galaxy at much lower speeds than disk star.
LCD stands for:
a. linearly collimated diffraction. b. longitudinally combined depolarization. c. liquid crystal display. d. lighted compact disk.