Two long parallel wires are separated by 6.0 mm. The current in one of the wires is twice the other current. If the magnitude of the force on a 3.0-m length of one of the wires is equal to 8.0 ?N, what is the greater of the two currents?
a. 0.20 A
b. 0.40 A
c. 40 mA
d. 20 mA
e. 0.63 A
b
Physics & Space Science
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Erosion performed by flowing water alone is known as
A. weathering. B. abrasion. C. hydraulic action.
Physics & Space Science
If the log of the creep strain rate is plotted as a function of the log of the applied stress, the slope is equal to the _________of the applied stress.
Fill in the blank(s) with the appropriate word(s).
Physics & Space Science
Since ?0 = 8.85 × 10?12 C2 / N ? m2, the units of ?0E2 can be reduced to
A.
.B.
.C.
.D.
.E.
.
Physics & Space Science
Increased temperature usually leads to an increase in reaction rate because collisions are
a. more violent only. b. more frequent only. c. both more violent and more frequent. d. none of these
Physics & Space Science