4/15/11 1 Physics 1224/15/11 2 Physics 1224/15/11 3 Physics 122 n1sinθ1= n2sinθ24/15/11 4 Physics 122 12mv12+U1=12mv22+U2nmed=vmedc4/15/11 5 Physics 1224/15/11 6 Physics 1224/15/11 7 Physics 122 object Virtual image of the object equal distance along perpendicular4/15/11 8 Physics 122 2/'111Rfoihhoif==+=h > 0 h´< 0 h < 0 h´> 0 i > 0 o > 0 i < 0 o < 0 f < 0 f > 0 “standard” arrangement4/15/11 9 Physics 122 1f=1i+1oh'h=iof > 0 f < 0 “standard” arrangement i o4/15/11 10 Physics 1224/15/11 11 Physics 1224/15/11 12 Physics 122 θΔD a θWhen ΔD = nλ, waves add. When ΔD = (n+1/2)λ, waves cancel4/15/11 13 Physics 122 -0.0500.050.10.150.20.250.3-20 -15 -10 -5 0 5 10 15 20xθd/2 ΔD ΔD = 0 ΔD = λ/24/15/11 14 Physics 122 dadaDMin IMinDMin IMin22 221111sin sinθλθλθλθλ==≈≈4/15/11 15 Physics 122 Fq→Q= FQ→ q=kCqQr2kc= 9 × 109 N-m2/C24/15/11 16 Physics 1224/15/11 17 Physics 122 g =Facting on mmE =Facting on qqField is the value at a position in space “ r “ assuming that the force is measured by placing the object at r .4/15/11 18 Physics 1224/15/11 19 Physics 122 E =kcQr2E =2kc(Qd)r3(far away -- there's an angle factor too)E =2kCλdλ=QL⎛⎝⎜⎞⎠⎟E = 2πkCσσ=QA⎛⎝⎜⎞⎠⎟4/15/11 20 Physics 122 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 fields of the two plates add on the inside, producing double the field of a single plate. +σ -σ Field insideE = 4πkCσσ= Q / AThe field inside is uniform (until you get near the
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