Two parallel wires are separated by 0.25 m. Wire A carries 4.1 A and Wire B carries 10 A, both currents in the same direction. The magnetic permeability in empty space µ0 = 4p × 10^-7 T×m/A. The magnitude of the force on 1.4 m of Wire A is:
a. 2.6 × 10^–5 N.
c. less than 1.0 × 10^–5 N.
b. 4.6 × 10^–5 N.
d. 3.2 × 10^–5 N.
B
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The order of evolutionary stages of a star like the Sun would be Main Sequence, giant, planetary nebula, and finally
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Why could not stable orbits be predicted for the atom by simply substituting the electrical attraction for the gravitational attraction? Why was there a classical crisis in describing the atom?
In the Northern Hemisphere, air rushing into a low-pressure region
A) spirals in a clockwise direction. B) sinks. C) spirals in a counterclockwise direction. D) rises.