What is the potential difference VB ? VA when the I = 1.5 A in the circuit segment below?
a.
+22 V
b.
?22 V
c.
?38 V
d.
+38 V
e.
+2.0 V
b
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A black hole may be indirectly detected from radiation emitted by the ________ disk that surrounds it as matter is pulled inward
Fill in the blank(s) with correct word
Most telephone cables are made of copper wire of either 24 or 26 gauge. If the resistance of 24-gauge wire is 137 ?/mile and the resistance of 26-gauge wire is 220 ?/mile, what is the ratio of the diameter of 24-gauge wire to that of 26-gauge wire?
a. 1.6 b. 1.3 c. 0.62 d. 0.79 e. 0.88
A steel pipe column (E 5 210 GPa) with length L 5 4.25 m is constructed of circular tubing with outside diameter d2 5 90 mm and inner diameter d1 5 64 mm. The pipe column is fixed at the base and pinned at the top and may buckle in any direction. The Euler buckling load of the column is most nearly:
(A) 303 kN
(B) 560 kN
(C) 690 kN
(D) 720 kN
Which of the following particles does not mediate the weak interaction?
A. W+
B. W-
C. 
D. Z0
E. All of these choices mediate this interaction.