An explorer walks into a lab in a science building. She has a compass in her hand and finds that the south pole of her compass points toward the room's East wall when she is nearer that wall and toward the west wall when she is nearer that wall. You could explain this if magnetized metal had been installed in the East and West walls with North poles pointing into the room. If no magnetic material
was installed in the North or South walls of the room, she would expect that
a. the south pole of the compass would tend to point toward those walls.
b. the north pole of the compass would tend to point toward those walls.
c. the compass needle would not point in any particular direction.
d. the north pole of the compass needle would tend to point toward the centers of those walls, but the south pole would tend to point toward the sides of those walls.
e. the south pole of the compass needle would tend to point toward the centers of those walls, but the north pole would tend to point toward the sides of those walls.
B
You might also like to view...
Earth's magnetosphere is 100 times larger than Jupiter's
Indicate whether the statement is true or false
A pinned-end copper strut (E 5 110 GPa) with length L 5 1.6 m is constructed of circular tubing with outside diameter d 5 38 mm. The strut must resist an axial load P 5 14 kN with a factor of safety of 2.0 with respect to the critical load. The required thickness t of the tube is approximately:
(A) 2.75 mm
(B) 3.15 mm
(C) 3.89 mm
(D) 4.33 mm
A radioactive material initially is observed to have an activity of 1 600 decays/s. If six hours later it is observed to have an activity of 400 decays/s, what is its half-life?
a. six hours b. three hours c. twelve hours d. seven hours e. not enough information
Three cars (car L, car M, and car N) are moving with the same velocity, and slam on the brakes. The most massive car is car L, and the least massive is car N
Assuming all three cars have identical tires, for which car is the amount of work done by friction in stopping it the highest? A) The amount of work done by friction is the same for all cars. B) Car L C) Car M D) Car N