PHY 158 Lecture 10: EC3

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Calculate: ln |vr| at t =20s ln(3. 42v) = 1. 229641 t (s) 0. 05129 ln lvrl vs. t(s) y = -0. 0086x + 1. 4299. Vr= e ^ (-t/ (cid:306)) ln (vr) = ln ( ) (-t/ (cid:306)) s = ln ( ) / t (cid:306) = -1/s (cid:306) = -1/ (-0. 00862) (cid:306) =116s (note: = (cid:4672)(cid:4673)(cid:2870)(cid:4666) (cid:4667)(cid:2870)) (cid:305)(cid:306) = (cid:4672)d ds(cid:4673)(cid:2870)(cid:4666) s(cid:4667)(cid:2870)= (cid:4672)(cid:2869)s2(cid:4673)(cid:2870)(cid:4666) s(cid:4667)(cid:2870)= (cid:4672) Report (cid:306) (cid:305)(cid:306) = 120s 10 s (cid:2869) (cid:2868). (cid:2868)(cid:2868)(cid:2876)(cid:2874)(cid:2870)2(cid:4673)(cid:2870)(cid:4666)(cid:882). (cid:882)(cid:882)(cid:882)(cid:889)(cid:882)(cid:888)(cid:4667)(cid:2870)=(cid:883)(cid:882) s. Calculate: ln |vr| at t =20s ln(3. 51v) = 1. 255616 t (s) 0. 35667 ln lvrl vs. t(s) y = -0. 0101x + 1. 4448. Vr= e ^ (-t/ (cid:306)) ln (vr) = ln ( ) (-t/ (cid:306)) s = ln ( ) / t (cid:306) = -1/s (cid:306) = -1/ (-0. 010105826) (cid:306) =98. 95s (note: = (cid:4672)(cid:4673)(cid:2870)(cid:4666) (cid:4667)(cid:2870)) (cid:305)(cid:306) = (cid:4672)d ds(cid:4673)(cid:2870)(cid:4666) s(cid:4667)(cid:2870)= (cid:4672)(cid:2869)s2(cid:4673)(cid:2870)(cid:4666) s(cid:4667)(cid:2870)= (cid:4672) Report (cid:306) (cid:305)(cid:306) = 99 s 1 s. Comparing (cid:306) (cid:305)(cid:306) = 99 s 1 s (cid:306) (cid:305)(cid:306) = 120s 10 s.

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