If we wished to construct a "tank circuit" where electric charge originally stored on a capacitor flows through an inductor, then back again, what value of inductance should we place in series with a fully-charged 100-?F capacitor to get the circuit to resonate at 60.0 Hz?
What will be an ideal response?
70.4 mH
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Parallel-Plate Capacitor: Each plate of an ideal air-filled parallel-plate capacitor has an area of 0.0010 m2, and the separation of the plates is 0.050 mm. An electric field of 7.4 × 106 V/m is present between the plates. What is the capacitance of this capacitor? (?0 = 8.85 × 10-12 C2/N ? m2)
A. 180 pF B. 120 pF C. 300 pF D. 240 pF E. 360 pF
The supernova that formed M-1, the Crab Nebula, was observed in
A) 1572 AD by Tycho Brahe. B) 1604 AD by Johannes Kepler. C) 1054 AD by Chinese and Middle Eastern astronomers. D) 1006 by observers in the southern hemisphere. E) about 9,000 BC by all our ancestors.
13.0 g of water in a 3.25-L pressure vessel is heated to 480°C. What is the pressure inside the container? (R = 0.082 L/atm/mol/K, one mole of water has a mass of 18 grams)
a. 24.7 atm b. 13.7 atm c. 8.75 atm d. 15.7 atm e. 19.8 atm
The rigid object shown is rotated about an axis perpendicular to the paper and through point P. The total kinetic energy of the object as it rotates is equal to 1.4 J. If M = 1.3 kg and L = 0.50 m, what is the angular velocity of the object? Neglect the mass of the connecting rods and treat the masses as particles
a.
1.3 rad/s
b.
1.5 rad/s
c.
1.7 rad/s
d.
1.2 rad/s
e.
2.1 rad/s