The minimum number of forces that act on a book resting on a table is
A) 1.
B) 2.
C) 3.
D) 4.
E) none of the above
Answer: B
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A circuit consists of 2N resistors, all of resistance R, connected as shown below. A potential difference V is applied to one end, and the other end is at ground potential. The equivalent resistance of the circuit is
a.
.
b.
R.
c.
Moment of Inertia: A majorette fastens two batons together at their centers to form an X shape. Each baton consists of an extremely light 1.2-m bar with small 0.25-kg balls at each end. What is the moment of inertia of this baton about an axis through the center of the X?
Fill in the blank(s) with the appropriate word(s).
Surface tension of liquids
A) increases when wetting agents are added. B) decreases as the liquid temperature increases. C) is about the same for all liquids. D) results from a thin molecular membrane beneath the liquid surface. E) keeps steel ships afloat.
Calculate the thermal conductivity of carbon bisulfide using Equation 2-6 and compare this result to the listed value in Table 2-2.
