The net force on any object moving at constant velocity is
A) zero.
B) 10 meters per second squared.
C) equal to its weight.
D) about half its weight.
Answer: A
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a. 6 b. 1 c. 4 d. 2 e. 1.5
A certain ideal gas has a molar specific heat at constant pressure of 7R/2. What is its molar specific heat at constant volume?
A) 5R/2 B) 3R/2 C) 8R D) 9R/2 E) 6R
The point P lies along the perpendicular bisector of the line connecting two long straight wires S and T perpendicular to the page. A set of directions A through H is shown next to the diagram. When the two equal currents in the wires are directed into the page, the direction of the magnetic field at P is closest to the direction of
a.
A
b.
B.
c.
C.
d.
D.
e.
E.
The loop is partway into the field (as shown).
A. forward (in the +x direction). B. backward (in the -x direction). C. zero. D. some other direction (specify).