If two transparency sheets are rubbed with tissue and the transparency sheets are then held at rest a short distance from each other, the force between them will be
A) a repulsive magnetic force.
B) a repulsive electric force.
C) an attractive electric force.
D) an attractive magnetic force.
E) zero.
B
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Exhibit 17-3Four wave functions are given below. I.y(x, t) = 5sin(4x- 20t + 4) II.y(x, t) = 5sin(3x- 12t + 5) III.y(x, t) = 5cos(4x + 24t + 6) IV.y(x, t) = 14cos(2x- 8t + 3)Use this exhibit to answer the following question(s). Refer to Exhibit 17-3. Rank the wave functions in order of the magnitude of the wave speeds, from least to greatest.
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You measure the velocity of an electron to an accuracy of ±22.6 m/s
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