1180_Physics ProblemsTechnical Physics

1180_Physics ProblemsTechnical Physics - Chapter 42 ga f b...

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Chapter 42 521 P42.7 (a) r 2 2 2 0 052 9 2 0 212 == .. nm nm bg a f (b) mv mke r e ee 2 2 2 31 9 19 2 9 9 11 10 8 99 10 1 60 10 0212 10 ×× × × −− . . kg N m C C m 22 ej e j e j e 2 25 995 10 . k g m s (c) Lm v r e 2 25 9 34 9 95 10 0 212 10 2 11 10 × × = × . kg m s m kg m s 2 e j (d) Km v m e e e 2 2 2 25 2 31 19 1 2 9 11 10 543 10 340 = ×⋅ × = . . kg m s kg J e V (e) U ke r e 2 2 2 91 9 2 9 18 8 99 10 1 60 10 109 10 680 =− × × × = − . Nm C C m e V e j (f) EKU 222 =+= = . eV eV eV P42.8 We use E n n = 13 6 2 eV . To ionize the atom when the electron is in the n th level, it is necessary to add an amount of energy given by EE n n = 13 6 2 . (a) Thus, in the ground state where n = 1, we have E = 13 6 eV . (b) In the n = 3 level, E 13 6 151 . . eV 9
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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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