A series LRC circuit has a 100-? resistor, a 0.100-?F capacitor and a 2.00-mH inductor connected across a 120-V rms ac voltage source operating at (1000/?) Hz. What is the resonant frequency of this circuit?
A)
70.7 kHz
B)
17.9 kHz
C)
22.5 kHz
D)
35.3 kHz
E)
11.3 kHz
E
Physics & Space Science
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The magnetic field at a distance of 2 cm from a long straight current-carrying wire is 4 ?T. What is the magnetic field at a distance of 1 cm from this wire?
A) 2 ?T B) 4 ?T C) 6 ?T D) 8 ?T E) 10 ?T
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How much mass is lost during a reaction in which 1.7 × 108 MeV of energy is released?
A) 1.8 × 10-8 kg B) 5.7 × 10-9 kg C) 1.9 × 10-17 kg D) 3.0 × 10-22 kg E) 6.2 × 10-28 kg
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What is the closest planet to the sun?
a. Neptune b. Uranus c. Earth d. Mercury e. Venus
Physics & Space Science
If the geometry of the universe can be shown to be Euclidean, then the density of the universe _________ the critical density
Fill in the blank(s) with correct word
Physics & Space Science