ch22-p070 - 70. (a) Let E = /20 = 3 106 N/C. With = |q|/A,...

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70. (a) Let E = σ /2 ε 0 = 3 × 10 6 N/C. With = | q |/ A , this leads to ( ) ( ) () 2 26 2 22 7 0 92 2 2.5 10 m 3.0 10 N C 21 . 0 1 0 C , 2 28 .99 10Nm C RE qR R E k πσ πε ×× == = = = × ×⋅ where 2 0 1/4 8.99 10 N m C . k πε × (b) Setting up a simple proportionality (with the areas), the number of atoms is estimated
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This note was uploaded on 07/10/2010 for the course PHYS 324 taught by Professor Jh during the Fall '10 term at The Petroleum Institute.

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