PHYS102Quiz6b - Practice Quiz 2 Name_ 1) An electron and a...

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Practice Quiz 2 Name_________________________ 1) An electron and a positron are released simultaneously from rest and start to move towards each other because of the attractive Coulomb force between them. (Note: A positron is the antiparticle of the electron, being in all aspects identical to the electron except in the sign of its electrical charge. The charge of the positron is + e , while that of the electron is - e .) They are initially separated by a distance d . The two particles eventually collide. When they collide, A) they are closer to the electron's initial position. B) they are at the midpoint of their initial separation. C) they are closer to the positron's initial position. D) Not enough data is given to predict where they collide. Answer: B 2) Figure above shows four Gaussian surfaces surrounding a distribution of charges. The Gaussian surface (surfaces) that has (have) electric flux of + q o through it (them) is (are) A) a. B) b.
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This note was uploaded on 03/07/2011 for the course PHYS 102 taught by Professor Armenn.kocharian during the Winter '11 term at California State University Los Angeles .

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PHYS102Quiz6b - Practice Quiz 2 Name_ 1) An electron and a...

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