A square loop of wire carrying a current in a clockwise direction lies in the plane of the paper. The magnetic field inside the loop is directed
A)
out of the paper everywhere.
B)
out of the paper near the wire, but into the paper elsewhere.
C)
into the paper everywhere.
D)
into the paper near the wire but out of the paper elsewhere.
E)
not given
C
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The Mohorovicic discontinuity marks the change in rock density elasticity between the
A) inner and outer core. B) core and the mantle. C) mantle and the crustal surface. D) asthenosphere and lithosphere.
The CMB is perfectly uniform
a. True b. False Indicate whether the statement is true or false
The two metallic strips that constitute some thermostats must differ in:
A. length B. thickness C. mass D. rate at which they conduct heat E. coefficient of linear expansion
In the figure, if Q = 30 ?C, q = 5.0 ?C, and d = 30 cm, what is the magnitude of the electrostatic force on q?
A. 15 N B. 23 N C. zero D. 7.5 N E. 38 N