f the distance between two point charges remains constant while the size of one of the charges is quadrupled, the force between the charges is multiplied by
A. 1/4
B. 2
C. 4
D. 16
C. 4
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If the radius of the Earth somehow decreased with no change in mass, your weight would
A) decrease. B) increase. C) not change.
A charge of 2.00 ?C flows onto the plates of a capacitor when it is connected to a 12.0-V potential source. What is the minimum amount of work that must be done in charging this capacitor?
A) 6.00 µJ B) 24.0 µJ C) 12.0 µJ D) 144 µJ E) 576 µJ
Which of the following statements is true of fusion reactions in stars?
A) They only occur outside the atomic nuclei. B) They occur only when nuclei of two atoms get very close to each other. C) They only occur as endothermic reactions. D) They only occur when the Coulomb force is zero and there is no Coulomb barrier.
Element A, mass 5.00 g, reacts exactly with 2.00 g of element B to form 7.00 g of compound AB. If 10.00 g of element A are reacted with 2.00 g of element B to form the same compound, what mass of compound AB will be formed?
a. 7.00 g b. 5.00 g c. 17.00 g d. 12.00 g