Of vectors with lengths 5 m, 3 m, and 4 m, which has the greatest magnitude x component?
a. the one with length 5 m
c. the one with length 4 m
b. the one with length 3 m
d. It could be any of the three.
D
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Three point charges, q1, q2, and q3, are arranged so the potential energy for the pair q1 and q2 is 0.12 J and for the pair q2 and q3 is 0.23 J. What is the potential energy for the pair q1 and q3?
A. 0.11 J B. -0.11J C. 0.35 J D. -0.35 J E. insufficient information is given for a unique answer
Lobate scarps are very low and small disturbances on the surface of Mercury
a. True b. False Indicate whether the statement is true or false
Resistance and Resistivity: A wire of resistivity ? must be replaced in a circuit by a wire of the same material but four times as long. If, however, the total resistance is to remain as before, the diameter of the new wire must
A. be the same as the original diameter. B. be one-half the original diameter. C. be one-fourth the original diameter. D. be two times the original diameter. E. be four times the original diameter.
If a light-weight stable nucleus has 12 neutrons, the atomic mass is expected to be about:
a. 6 b.12 c.18 d.24 e.36 amu.