The unit for current is the
a. ampere.
b. ohm.
c. coulomb.
d. volt.
a
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In stress relaxation the plastic strain
(a) Is constant (b) Increases with time (c) Decreases with time (d) Is equal to the negative of the elastic stain
A silver conductor
The flat rotation curves of spiral galaxies tell us that they contain a lot of dark matter. Do they tell us anything about where the dark matter is located within the galaxy?
A) Yes, they tell us that dark matter is concentrated near the center of the galaxy. B) Yes, they tell us that dark matter is spread uniformly throughout the galactic disk. C) Yes, they tell us that dark matter is spread throughout the galaxy, with most located at large distances from the galactic center. D) No, we cannot determine anything about the location of dark matter from the rotation curve.
A 2.0-cm length of wire centered on the origin carries a 20-A current directed in the positive y direction. Determine the magnetic field at the point x = 5.0 m on the x-axis
a. 1.6 nT in the negative z direction b. 1.6 nT in the positive z direction c. 2.4 nT in the negative z direction d. 2.4 nT in the negative z direction e. None of the above