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英文 高中

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區jline | (ATI taked backK to my parents and teachers. eat Iots be,I: i tS 人 8Athome, Talways did whatever my parents asked me to do so thatlcoulid be their perfect son. (GTrealized that IT had been living for others for my entire 1ife. should 0 She was like a lighthouse for me as I drifted alone in a dark Ocean. WhenTwas astudent in elementary school, Ialways tried my bestto be the Perfectd f 7easSf 、 school, Talways challenged myselfto score highest on every test and quiz so thatIcould be the perfect student for my teacher ffecf , Unfortunately, my reputation as a perfect kid was broken when Tentered junior high school: 1 sfarted to Violate every house rule and school rule. 2. ITcouldn'thave cared less about any test or roO 計 喲 eXam. Instead, Tput allmy time into fooling around with my friends,playing video games, and shouting adults. barely recognized myself anymore. 站 However, whenTwas in my darkest hour, there was one woman who didnt give up on me: my # 本, English teacher. She saw 了e potential in me and encouraged me to get back on my feet 3 lm 納difion, because of her, Irealized my talent and passion for English. Itold myselffhatTneeded to be a whole new person. In the past, Thadtriedto be perfect for others fo gain attention, but IT had failed. Then, had tried to be worthless to avoid attention, but had failed again.。 4 Ineeded to start living for myself. This change in attitude was the turning point Of my | Jife.Tknew what TWwas and was not good at, so Twould no longer cry because ofabad grade. Istarted 6oeherish myselfand my Telationships With my family and friends. Itwas atthis moment thatTTealized 凶af a twisf ofthe mind can be the difference between darkness and light.

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自然科學 大學

求解圖裡UICK quiz的第二小題

acit0r 1taneOuls CUrTent Differentiating Equation 27.22 with respectto time gives the inst: as afunction of time: 4 tt號 一Fe ptasafurc 主二 where Q;/有CC 三方 is the initial current. Figure 27.15b 5 in the resistor that we guessedin order to-apply Kirch Equations 27.15 and 27.21. Equation 27.23 shows that the ci ing capacitor is negative, indicating that the current 1s Figure 27.15c. Both the charge on the capacitor and the ct tially at a rate characterized by the time'constant7了三用C. 人 i 一 GOuicK ouiz 27.5 Considerthe circuitin Figure 27.17 and assume the battery has after the switch is closed, what is the currentin the Figure 27.17 no internal resistance. () 」 battery (a) 0 (b) &/2A(G 28/Z04 8/元(e) impossible to determine (ii) After a 有 eyerylong time, what is the Currentin the battery? Choose from the same choices. theswitch is CC (3 前:銜1加信介2放 IntermittentWindshield Wipers nobiles are equipped with windshield wipers that can operate intermittently during alight rainfall. How does ofsuch wipers depend on the charging and discharging ofacapacitor7 民 The wipers are part ofan 及C circuit whose time constant can be varied by selecting different values of及through amultipo- Sition sWitch. As the voltage across the capacitor increases, the capacitor reaches a point at which it discharges and Higgers the wipers. The circuit then begins another charging cycle. The time interval between the individual sweeps of the wiperS 1 determinedjby the value ofthe time constant.

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