Three different bodies-a uniform sphere, a uniform disk, and a hoop-all have same radius and same mass. The body with the largest rotational inertia will be
A. the disk.
B. the hoop.
C. the sphere.
D. none, as all have the same value of rotational inertia.
Answer: B
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a. True b. False Indicate whether the statement is true or false
RC Circuits: In the circuit shown in the figure, all the capacitors are initially uncharged when the switch S is suddenly closed, and the battery is ideal. Find (a) the maximum reading of the ammeter and (b) the maximum charge on the 5.00-µF capacitor.
What will be an ideal response?
A spinning neutron star has been observed at the center of a
A) supernova remnant. B) planetary nebula. C) red supergiant. D) protostar.
A long solenoid (1500 turns/m) carries a current of 20 mA and has an inside diameter of 4.0 cm. A long wire carries a current of 2.0 A along the axis of the solenoid. What is the magnitude of the magnetic field at a point that is inside the solenoid and 1.0 cm from the wire?
a. 78 ?T b. 55 ?T c. 48 ?T d. 68 ?T e. 2.0 ?T