PHY 2054: Physics II HITT scores were mailed over the weekend. They will be mailed once a week. Hopefully all webassign problems have beensolved. Please see me immediately after the class if there is still an issue. SI meetings have begun. See the course website for time and place.PHY 2054: Physics II About bicycle riding: If some one shows you a trick, it means that, It is possible to do that trick The person who showed you, can do the trick. It does not mean that you can do the trick. Practice it a lot of times and you can too.PHY 2054: Physics II Potentials equipotentials Capacitors Q = C ΔV Arrangement in a circuitPHY 2054: Physics II Force => work => change in K=> change in Potential energy ΔU = Uf–Ui= -W = - ΔK Work done is path independent. K+U = constant.U = k q1q2/rPHY 2054: Physics II Electric Potential V = U/q = -W/q Units of Joules/coulomb = volt 1 eV = e x 1V = 1.6 x 10-19J Also V = kq/r Vf–Vi= -∫E.ds for uniform fields Vf–Vi= - E (xf–xi) Add as a numberPHY 2054: Physics IIPHY 2054: Physics II Rank them by the magnitude of electric field Which has the field pointed to the right What does an electron do when released midwayHITT 1 A proton (+1.6 × 10−19 C) moves 10 cm on a path in the direction of a uniform electric field of strength 3.0 N/C. How much work is done on the proton by the electrical field?a. 4.8 × 10−20 Jb. −4.8 × 10−20 Jc. 1.6 × 10−20 Jd. zeroPHY 2054: EquipotentialsPHY 2054: Physics II Vf-Vi= -∫ k q/r2dr Choose Vi= V (∞)=0 V(r) = kq/rPHY 2054: Physics IIq1= 12nC, q2= -24nCq3= 31nC, q4= 17nCd = 1.3 m V = kpcosθ/r2 p = qd E = -∂V/∂s = - ……. Uniformly charged disk V = EzParallel Plate Capacitor Area A, separation d, charge ±q ΔV = V+-V-= +Ed = qd/ εoA E = σ/εo ΔV = qd/ εoA = q/C C = εoA/d Farad =
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