Physics 12 Spring 2007 Test 1

Physics 12 Spring 2007 Test 1 - Physics 12 spring 2007 Test...

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Physics 12 spring 2007 Test 1 Name: Please circle the best answer to the following questions. 1) When a previously uncharged object is charged to 1.602 micro-coulombs A) It has an excess of electrons B) one million electrons have been removed from it C) 10 13 electrons have been added to it D) None choice is true 2) In a beta decay, a neutron is converted into a proton, an electron and an antineutrino: neutron à proton + electron + antineutrino What is the electric charge carried by an antineutrino? 3) The fact that thin stream of water is attracted towards charged objects is mainly due to: 1
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4) Which one of the following choice for Q 1 and Q 2 can generate an electric field line distribution shown below? 5) Two identical balls, each carries a net charge Q as shown in the figure. If the mass of each ball is 10 g and the mass of the strings can be neglected, what is Q? A) -1.956 µC B) 1.956 µC C) 0.978 µC D) Both A) and B) 2
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