A series LRC circuit has a sinusoidal voltage supplied to it at 197 kHz with a peak voltage of 270 V, a 41-? resistance, a 14- ?F capacitor, and a 64-H inductance
What is the peak current for this circuit?
A) 3.5 ?A
B) 2.3 ?A
C) 4.2 ?A
D) 6.6 ?A
A
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Potential Energy: Two tiny particles having charges q1 = +56.0 nC and q2 = -46.0 nC are separated by 0.500 m and held in place, as shown in the figure. A third particle, having a charge of 54.0 nC is placed at the point A, which is 0.18 m to the left of q2. How much work is needed to move the third particle from point A to point B, which is 0.40 m to the left of q1. All the points in the figure lie on the same line. (k = 1/4??0 = 9.0 × 109 N ? m2/C2) 
Fill in the blank(s) with the appropriate word(s).
Population II stars contain about _____ atoms heavier than helium
A) 0.1 percent B) 0.5 percent C) 1.1 percent D) 2.3 percent
A bat emits a sound at a frequency of 39.0 kHz as it approaches a wall. The bat detects beats with a frequency of 827 Hz between the sound it emits and the echo bouncing from the wall
What is the speed of the bat if the speed of sound in air is 343 m/s? A) 2.7 m/s B) 3.0 m/s C) 3.6 m/s D) 5.4 m/s E) 9.0 m/s
The four fundamental forces that operate in the universe today are
A) strong force, weak force, electromagnetic force, gravity. B) strong force, weak force, electric force, magnetic force. C) nuclear force, electromagnetic force, gravity, tidal force. D) nuclear force, gravity, electric force, magnetic force.