RLC Circuits: A series circuit consists of a 100-? resistor, a 10.0-?F capacitor, and a 0.350-H inductor. The circuit is connected to a 120-V rms, 60-Hz power supply. What is the rms current in the circuit?
A. 0.42 A
B. 0.52 A
C. 0.62 A
D. 0.72 A
Answer: D
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Stored potatoes, beets, and rutabagas in an unheated well-insulated room can be protected from freezing by having in the room
A) blocks of foam plastic. B) large tubs of water. C) an ample supply of fire wood. D) none of the above
Why would Earth's orbit be unaffected were the Sun to suddenly become a black hole (with no change in its mass)?
What will be an ideal response?
A certain automobile tire has a volume of 0.0185 m3. If the absolute (or total) pressure in the tire is 500 kPa and the temperature is 298 K, how many molecules are there inside the tire? (R = 8.31 J/mol ? K, NA = 6.022 x 1023 molecules/mol)
A) 3.25 × 1023 molecules B) 3.25 × 1025 molecules C) 3.25 × 1024 molecules D) 2.25 × 1023 molecules E) 2.25 × 1024 molecules
Suppose it were possible to drill a frictionless cylindrical channel along a diameter of the Earth from one side of the Earth to another. A body dropped into such a channel will only feel the gravitational pull of mass within a sphere of radius equal to the distance of the mass from the center of the Earth. The density of the Earth is 5.52 × 10^3 kg/m3 and G = 6.67 × 10^?11 N/m2/kg2 . The
mass will oscillate with a period of a. 84.4 min. b. 169 min. c. 24.0 h. d. 1 130 h. e. 27.2 d.