Which statement correctly describes how a bar magnet should be placed on a globe to correctly align with earth's magnetic field?
a. place the magnet horizontally on the equator, with the south end facing south america.
b. place the magnet vertically on the equator, with the south end facing the the north pole.
c. place the magnet vertically on the equator, with the north end facing the north pole.
d. place the magnet horizontally on the equator, with the north end facing south america.

The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

Which of the following harmful chemicals are found in tobacco smoke? a. carbon monoxide b. carbon dioxide c. nicotine b. carbon dioxide d. both a and c

Athin plate moves between two parallel, horizontal, stationary flat surfaces at a constant velocity of v = 7.5 m/s. the two stationary surfaces are spaced 4 cm apart, and the medium between them is filled with oil whose viscosity is 0.9 n·s/m2. the part of the plate immersed in oil at any given time is 2 m long and 0.5 m wide. if the plate moves through the mid-plane between the surfaces, determine the force required to maintain this motion. what would your response be if the plate was 1 cm from the bottom surface (h2) and 3 cm from the top surface (h1)? if the plate moves through the mid-plane between the surfaces, the force required to maintain the motion will be n. if the plate was 1 cm from the bottom surface (h2) and 3 cm from the top (h1) surface, the force required to maintain the motion would be n.