110415-opp - 4/15/11 Physics 122 1 4/15/11 Physics 122 2 n1...

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Unformatted text preview: 4/15/11 Physics 122 1 4/15/11 Physics 122 2 n1 sin θ1 = n2 sin θ 2 4/15/11 Physics 122 3 12 12 mv1 + U1 = mv2 + U 2 2 2 nmed 4/15/11 vmed = c Physics 122 4 4/15/11 Physics 122 5 4/15/11 Physics 122 6 object equal distance along perpendicular Virtual image of the object 4/15/11 Physics 122 7 h' i = ho 111 =+ fio h>0 h´< 0 h<0 f = R/2 i >0 o>0 i <0 o<0 f<0 h´> 0 f>0 “standard” arrangement 4/15/11 Physics 122 8 “standard” arrangement o 111 =+ fio 4/15/11 i h' i = ho Physics 122 f>0 f<0 9 4/15/11 Physics 122 10 4/15/11 Physics 122 11 θ a ΔD θ When ΔD = nλ, waves add. When ΔD = (n+1/2)λ, waves cancel 4/15/11 Physics 122 12 0.3 0.25 0.2 0.15 0.1 0.05 0 -20 -15 -10 -5 0 5 1 0 1 5 2 0 -0.05 x ΔD = 0 ΔD = λ/2 d/2 θ ΔD 4/15/11 Physics 122 13 4/15/11 d λ DMin sin θ 1 = 2 2 λ DMin θ1 ≈ d a sin θ Physics 122 θ IMin 1 IMin 1 λ ≈ 2a λ = 2 14 Fq → Q = FQ → q 4/15/11 kC qQ =2 r Physics 122 kc = 9 × 10 9 N-m 2 /C2 15 4/15/11 Physics 122 16 g= 4/15/11 Facting on m m E= Facting on q q Physics 122 Field is the value at a position in space “ r “ assuming that the force is measured by placing the object at1r . 7 4/15/11 Physics 122 18 k cQ E= 2 r 2 kc (Qd ) r3 (far away -- there's an angle factor too) E= 2 kC λ E= d E = 2π kC σ 4/15/11 Physics 122 Q⎞ ⎛ ⎜λ = ⎟ ⎝ L⎠ Q⎞ ⎛ σ= ⎟ ⎜ ⎝ A⎠ 19 +σ -σ The fields of the two plates cancel each other on the outside. The fields of the two plates cancel each other on the outside. The field inside is uniform (until you get near the edges). The fields of the two plates add on the inside, producing double the field of a single plate. 4/15/11 Field inside E = 4π kC σ σ =Q/A Physics 122 20 ...
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This note was uploaded on 12/28/2011 for the course PHYSICS 122 taught by Professor Bhagat during the Fall '11 term at Maryland.

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110415-opp - 4/15/11 Physics 122 1 4/15/11 Physics 122 2 n1...

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