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PHYS 1214 General Physics II Exam 2 1: How much work is done to move a proton from a potential of 5 V to a potential of 20 v.
b) A point 5x10 m away along the negative x-axis? c) A point 5x10 m away at an angle of 30° to the x-axis? d) A point 5x10 m
PHYS 1214 General Physics II Exam 2 1: How much work is done to move a proton from a potential of 5 V to a potential of 20 v... a) in ev? b) In Joules? c) Was the work done by the field, or by an external force? 2: What potential is needed to accelerate a proton to 50,000 m-s1? 3: What potential is needed to accelerate an electron to 50,000 m-s1? 4: Given a breakdown voltage for air 013.C x 10s V-ms, how close would you need to put two conducting parallel plates together before they ar, if the potential difference across them is 100 V? 5: The dipole moment of a water molecule is 6.1x 10° debyes (C-m), Assume a water molecule is oriented on the x-axis, with its positive end pointing in the positive x direction, and its negative end pointing in the negative direction. What is the potential at... A point 5x10, m away along the positive x-axis? a)
b) A point 5x10 m away along the negative x-axis? c) A point 5x10 m away at an angle of 30° to the x-axis? d) A point 5x10 m away up the positive y-axis? e) A point 5x10 m away at an angle of 150° to the x-axis? 6: Two parallel conducting plates hold a charge of 5000 μC (5000 x 106 C) on each plate when held at a potential difference of 1000 v a) What is their capacitance? b) If the air gap between them is S x 20t m, wihat is their area? what is their capacitance if the space between them is filled with a dielectric of constant K-87 c)
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