A 17.0-mF capacitor is connected to an AC source with an rms voltage of 120 V and a frequency of 60.0 Hz. What is the rms current in the capacitor?
a. 1.41 A
c. 0 A
b. 0.543 A
d. 0.769 A
D
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Coulomb's Law: Three point charges are located on the x-axis at the following positions: Q1 = +2.00 ?C is at x = 1.00 m, Q2 = +3.00 ?C is at x = 0.00, and Q3 = -5.00 ?C is at x = -1.00 m. What is the magnitude of the electric force on Q2? (k = 1/4??0 = 8.99 × 109 N ? m2/C2)
A. 0.0540 N B. 0.135 N C. 0.158 N D. 0.0810 N E. 0.189 N
The gravitational constant G in the law of universal gravitation
A. is believed to be constant with time. B. is believed to have the same value throughout space. C. leads to a determination of the mass of Earth. D. All of the above are true.
Changes in the predicted motion of Uranus led to the search for an eighth planet
Indicate whether the statement is true or false
To fully describe the apparent motion of the planets in the sky, Ptolemy's model invoked
A) ellipses. B) constant speeds. C) a heliocentric view. D) epicycles. E) Occam's Razor.