A series LC circuit contains a 100 mH inductor, a 36.0 mF capacitor and a 12 V battery. The period of the electromagnetic oscillations in the circuit is
a. 0.0227 s.
b. 0.377 s.
c. 2.26 s.
d. 105 s.
e. 1750 s.
b
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Predict the cooling rate of a jominy bar at the jominy distance. Dqe, of 30 mm and 50 mm after 2 minutes.
What will be an ideal response?
Torque: A flat rectangular loop of wire is placed between the poles of a magnet, as shown in the figure. It has dimensions w = 0.60 m and L = 1.0 m, and carries a current I = 2.0 A in the direction shown. The magnetic field due to the magnet is uniform and of magnitude 0.80 T. The loop rotates in the magnetic field and at one point the plane of the loop makes a 30° angle with the field. At that instant, what is the magnitude of the torque acting on the wire due to the magnetic field?
A. 0.30 N ? m B. 0.40 N ? m C. 0.48 N ? m D. 0.83 N ? m E. 0.96 N ? m
If a specially designed space probe reaches the event horizon of a black hole, an observer watching the clock on this probe from a safe distance would see
A) the clock slow down. B) the clock speed up. C) the clock keep time in sync with the observer's clock. D) the time on the clock would appear to change randomly.
Kepler developed his model of elliptical orbits because of an 8-arcminute discrepancy between observations and a model of planetary motion with circular orbits
Indicate whether the statement is true or false