721_Physics ProblemsTechnical Physics

721_Physics ProblemsTechnical Physics - Chapter 25 P25.30...

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Chapter 25 61 P25.30 (a) Vx kQ r r xa ee af bg a f =+= + + + + +− 1 1 2 2 22 2 2 a kQa e a f = + = + F H G G I K J J = + 2 2 1 2 1 2 2 FIG. P25.30(a) (b) Vy r r ya bg bg + + + 1 1 2 2 a e e = + F H G I K J = + F H G I K J 1 1 1 1 1 1 1 1 FIG. P25.30(b) P25.31 V r e = so r VV V e == ×⋅ × = 8 99 10 8 00 10 72 0 99 .. . Nm C C Vm ej e j . For V = 100 V , 50.0 V, and 25.0 V, r = 0720 . m, 1.44 m, and 2.88 m . The radii are inversely proportional to the potential. P25.32 Using conservation of energy for the alpha particle-nucleus system, we have KUKU ffi i += + . But U kq q r i e i = α gold and r i ≈∞ . Thus, U i = 0. Also K f = 0 ( v f = 0 at turning point), so UK fi = or
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This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .

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