Homework, 2 General Physics

Homework, 2 General Physics - General Physics II Homework 2...

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General Physics II Homework 2 Worked Examples Giancoli: 16.45, 16.51, 16.53, 16.56, 16.67, 16.73 45. ( a )Use Gauss’s law to determine the electric flux. ( b )Since there is no charge enclosed by surface A2, . 51. ( a ) The net force between the thymine and adenine is due to the following forces. O – H attraction: O – N repulsion: N – N repulsion: H – N attraction: ( b ) The net force between the cytosine and guanine is due to the following forces. O – H attraction: (2 of these) O – N repulsion: (2 of these) H – N attraction: N – N repulsion: ( c ) For pairs of molecules, we assume that half are A-T pairs and half are C-G pairs. We average the above results and multiply by . 53. Calculate the total charge on all electrons in 3.0 g of copper, and then compare the to that value. 56. ( a ) From problem 55, we know that the electric field is pointed towards the Earth’s center. Thus an electron in such a field would experience an upwards force of magnitude . The force of gravity on the electron will be negligible compared to the electric force.
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