Which diagram correctly shows the magnetic field lines created by a circular current loop in which current flows in the direction shown?
a.
b.
c
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Which of the following has your "cosmic address" in the correct order?
A) You, Earth, solar system, Local Group, Local Supercluster, Milky Way Galaxy, universe B) You, Earth, solar system, Milky Way Galaxy, Local Group, Local Supercluster, universe C) You, Earth, Local Group, Local Supercluster, solar system, Milky Way Galaxy, universe D) You, Earth, solar system, Local Group, Milky Way Galaxy, Local Supercluster, universe E) You, Earth, Milky Way Galaxy, solar system, Local Group, Local Supercluster, universe
A steady horizontal force lasting for 2.1 s gives a 1.25 kg object an acceleration of 3.2 m/s2 on a frictionless table. What impulse does this force give to the object?
A) 11 kg ? m/s B) 26 kg ? m/s C) 2.6 kg ? m/s D) 8.4 kg ? m/s
Whether the universe is open, closed or flat depends on the ____ of the universe
a. luminosity b. density c. temperature d. radius e. rotation rate
Torque: A flat circular wire loop lies in a horizontal plane on a table and carries current in a counterclockwise direction when viewed from above. At this point, the earth's magnetic field points to the north and dips below the horizontal. Which side of the coil tends to lift off of the table due to the magnetic torque on the loop?
A. the north side B. the east side C. the south side D. the west side E. The entire loop lifts straight up.