Exhibit 12-1
The figure below shows a graph of angular velocity versus time for a woman bicycling around a circular track.
?
?
Use this exhibit to answer the following question(s).
Refer to . What is her angular displacement (in rad) in the first 12 minutes?
a.
0
b.
2?
c.
4?
d.
16?
e.
32?
e
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What is the inductive reactance of a 200 mH inductor attached to a 120 V rms 60.0 Hz source?
A. 12.0
B. 75.4
C. 188
D. 940
E. 24.0
The greenhouse effect raises Earth's surface temperature by roughly
a. 0 K. b. 0.35 K. c. 3.5 K. d. 35 K. e. 350 K.
The temperature coefficient of resistivity is a quantity that is:
a. always positive. b. always non-negative. c. sometimes negative. d. represented by the symbol ?.
Parallel Wires: Two long parallel wires are placed side-by-side on a horizontal table. If the wires carry current in the same direction,
A. one wire is lifted slightly while the other wire is forced downward against the table's surface. B. both wires are lifted slightly. C. the wires pull toward each other. D. the wires push away from each other.