The magnetic field of an electromagnetic wave has a peak value of 5.0 × 10-10 T. What is the intensity of the wave?
A)
1.0 × 10-13 W/m2
B)
1.5 × 10-5 W/m2
C)
3.0 × 10-5 W/m2
D)
2.0 × 10-13 W/m2
E)
7.5 × 105 W/m2
C
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If is about 30 
?
A. Roughly zero
B. Roughly 
/30
C. Roughly /1.4
D. Roughly
E. Roughly 1.4
F. Roughly 30
T. Other (specify)
An RL series circuit has the following components: 9.2-mH coil, 1.2-? resistor, 16-V battery, ammeter and switch. What is the time constant of this circuit?
a. 1.3E+2 s b. 7.7E–3 s c. 1.4E–3 s d. 6.9E–4 s e. 1.2E–1 s
Majority of the mass of the galaxy's halo is made up of white dwarfs
Indicate whether the statement is true or false
Graphical Interpretation of Work: The resultant force on an object over a 0.50-s time interval is plotted in the graph in the figure. How much work did this force do on the object during the 0.50-s interval?
A. -25 J B. 50 J C. 22 J D. 12.5 J E. 0 J