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LeeDashOne

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  • 等腰梯形的電阻怎麼算? (20點)

    等腰梯形的阻抗要怎麼算?

    (假設材料的厚度均一,介質的阻抗也很平均)

    例如:梯形上底 U,下底D,高度H,阻抗(方阻)為R,

       那麼電流由上面通過梯形流到下面時,電阻多少?

       (公式為何?)

    範例:梯型上底 0.1mm, 高度 0.5mm, 下底 0.5mm, 方阻100歐姆

       ,那麼這個梯形的阻抗會是多少歐姆?

    Many Thanks!

    (PS: 畢業太久,微積分都還老師了... 實在算不出來了...)

    3 個解答其他:科學1 0 年前
  • USPS package tracking

    I bid an item at eBay and the seller send my package with

    USPS "2~5 days" service.

    The tracking number is RE394922769US , and the tracking

    status freeze on "Acceptance" never update. (since 22/Jul)

    Anybody know where is my package? or anybody work in

    USPS can help me find my package? many thanks!

    1 個解答Other - Business & Finance1 0 年前
  • Does anybody know USPS tracking number start with "RE" mean what?

    I bid a iPhone 3G from eBay and the seller charge me US$100 for shipping... The tracking number is RExxxxxxxxxUS.

    Does anybody know what service type of this tracking number?

    Many thanks!

    3 個解答Other - Business & Finance1 0 年前