A conducting ring is placed such that it is lying flat in the x-y plane. A magnetic field exists in the +z direction, and its strength is decreasing with time. Which of the following occurs?
A. No current is induced in the ring.
B. A current is induced, in the counter-clockwise direction, as viewed from above the x-y plane.
C. The situation is unclear because we do not know the initial conditions.
D. A current is induced, in the clockwise direction as viewed from above the x-y plane.
B. A current is induced, in the counter-clockwise direction, as viewed from above the x-y plane.
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A tube bank consists of 30 columns of 3 cm diameter tubes, spaced 4.5 cm apart (center to center) in-line both ways. Ethylene glycol at 90ºC is to be cooled to 60ºC after passing over the tube bank at 2 m/s. Estimate the average tube temperature.
What will be an ideal response?
Jupiter does not appear to rotate as a solid body; the observed ________ rotation shows that we are actually viewing a gaseous object
Fill in the blank(s) with correct word
Copper is usually the material of choice for the wire in a coil to produce a magnetic field and in wiring for electric motors. Copper wire is placed in a magnetic field (H) of 1×106 A/m. The magnetic susceptibility of copper is –9.7×10-6
(a) Determine the intensity of magnetization (M) in the Cu. Is this M in the same direction or opposed to H? (b) What is the average dipole moment per atom (pa) in Cu that is parallel or antiparallel to H when subjected to the applied magnetic field magnetic field?
A rectangular stack of lead bricks measures 2 m by 3 m by 4 m. The mass density of lead is 11,340 kilograms per cubic meter. What is the total mass of the stack of lead?