The earth's magnetic field at the magnetic equator is approximately
A) 104T.
B) 1/2 T.
C) 10-5 T.
D) 10-3 T.
E) 104 Gauss.
C
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A driver in a car traveling at slams on the brakes and skids to a stop. If the coefficient of friction between the tires and the level road is 0.80, how long will the skid marks be?
A) 37 m B) 30 m C) 46 m D) 34 m
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If we know an object is moving at constant velocity, we may assume:
a. the net force acting on the object is zero. c. the object is accelerating. b. there are no forces acting on the object. d. the object is losing mass.