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HW__10_P213_F08 - Physics 2213 Read Homework#10 Fall 2008...

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1 Physics 2213 Homework #10 Fall 2008 Read: Chapter 24, sections 24.3, 24.4 Chapter 23, section 23.1-23.4 Chapter 27, intro, section 27.1-27.3 For study: Chap. 24: Q's #24.8, 9, 11, 12, 13, 14, 15, 17, 18; E's & Ps: #24.27, 29, 35, 37, 57, 71, 72; Chap. 23: Q's #23.5, 6, 7, 13, 17; E’s & P’s #23.3, 13, 20, 31, 34, 59; Chap. 27: Q's #Q27.1, 3, 4, 6; E's & P's: #27.3, 5, 7. To be prepared for your 2nd recitation class the week of November 3-7: #24.28 [Capacitor Energy] #23.32 [Metal Sphere Potential] #23.35 [Potential of a Wire] #23.12 [Proton Collision] #23.49 [Two Spheres] Solve parts (a) and (b) only . Add: Graph the potential V(r). #24.8 ["Design-a-Cap"] Please add: (c) Redo your capacitor design with the space between the capacitor filled with polyester. (See Table 24.2.) Give new answers for the questions in parts (a) and (b). #1. [Smile!] Capacitors are often used in applications where a short burst of electric current is needed. To power a certain camera's flash lamp, a capacitor must supply a current burst that dissipates a total of 20 J of energy as light and heat in a lamp of resistance 10 Ω . When the lamp is fired, the capacitor is to deliver 95% of its stored energy in a time of 3.0 ms.
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