想請問一下，為什麼把球拋上去的加速度是負的g？(如果是用跟重力相反方向來解釋的話，那為什麼球掉下來的加速度也還是負的g) 拜託跟我解釋一下！謝謝🙏🏻

wicy AP osses a o the air. Fall apply falling Ball effects glected. v = 0 at highest point TWO becomes less positive Aloiteralsos 正 V降低 400. During ascent, a=-g, speed decreases, and velocity y IQU setle sebj vex V增加 a = -g, speed increases, and velocity becomes more negative $1-991² y = 0 do bszzol Boy Beall During ste descent, Houe esileh V 負

半衰期的問題

Radium 233Ra has a half-life of about 3.8 days. (a) Given 1 88 gram, how much will still be present after 1 day? (b) After 1 year?

想問要怎麼判斷這種類型的題目？

試題1 部分答對 得分 0.25/配分1.00 P標示試題 Figure (left) below shows a LC circuit, the top view of the electric and magnetic field inside the capacitor is shown on the right Figure at some time t. Which of the following statements are corrects for the directions of the electric and magnetic fields inside the inductor (top view) and the current at this moment in the circuit? (0) DE A. The magnitude of the current I is increasing at this moment OB. E-field is pointing into page OC. The magnitude of the current I is decreasing at this moment ✓ D. B-field is pointing out of page ✓ E. E-field is counter-clock-wise X OF. The current I is clock-wise OG. E-field is clock-wise ✓H. The current I is counter-clock-wise

請問要怎麼把圖一的表格匯入到phpmyadmin裡呢？我結構是設定圖二這樣，也有試過load data infile了是圖三那樣但都錯誤，拜託大家幫我解惑，想了兩天還是沒有頭緒。

WPS Office | typhoon.csv 三 Menu v 白日语 词 5 @C G10 Qfx A A 1 Typhoon 2 南瑪都 3 梅花 4 米雷 5 桑達 6 艾利 7 梅姬 8 凡那比 9 莫蘭蒂 10 南修 11 萊羅克 12 芭瑪 13 莫拉克 14 莫拉菲 15 蓮花 16 薔蜜 17 哈格比 18 辛樂克 K < > > typhoon 十 Date B + Home Insert 20110821 20110726 20110621 20110520 20110506 20101013 20100915 20100906 20100829 20100827 20090928 20090802 20090714 20090617 20080924 20080917 20080908 Page Layout C Longitude Formulas 128 146 134 141.5 128.4 142 129.5 124 125 117.5 145.5 131 131 117 138 143.7 127 Data Latitude Review D View Tools 12 8 10.5 8.5 11.2 12.5 122 19 23 24.5 15 10 19.5 9.5 18 11.5 15.6 15 Q Click to find commands E F Wind Velocity near TW 53 43 28 55 23 48 45 23 18 23 43 40 28 28 53 45 51 T 1 q 幻明回家 150%* A Go Premium. G +0 |---| ▸ || + x H KY

A 1.75-kN·m torque is applied to the solid cylinder shown. Determine (a) the maximum shearing stress, (b) the percent of the torque carri... 繼續閱讀

50 mm 25 mm 1.75 kN.m

求解程式碼：請問這題為何答案是D呢?

考題(108 中山資管) 20. Given a piece of code below. What is the value of the variable w? for (i = 0; i < 5; ingentina ) for =0; j < 1; i++) W=2; A. 30 B. 32 D. 42 Ans: (D)

計概 師大資工104年轉學考考古題 想請問這題:D

Assuming that no overflow occurs, how many times do we have to apply the arithmetic left shift operation to multiply an integer by 4? (A) 1 (B) 2 (C) 3 (D) 4 參考解答: B

大家有推薦 數位系統設計的中文書嗎

想請問各位大大 我的算法是對的嗎

VER U. 試求圖 EP3.8a 中,立方結晶面的米勒指數。 解 將此平面沿y軸向右平移量單位,如圖 EP3.86 所示,接著把右後下角當成新原 點,新平面和x軸之截距是1個單位長,所以新平面和各軸之截距是(+1, -, c)。 取其倒數後可寫為(1, -, 0),最後取簡單整數比,得到平面米勒指數 (5120)。 z (1/2 - 1 = 3 - 2 子, 新原點 y X 上 Alw (b) (6)

求解如何算第四題共振電路

- o (a)請求出其轉移函數(transfer unction Hol = 。 (b)請求出錯震頻率(resonance frequency) do (c) 請求出|H(o) | = 1/N2的頻率位置。 (d) 請求出頻寬(band width, BW)為何? L HI = Vs ~ (e) 請求出品質因子(quality factor)為何? 4. 一個並聯共振電路的電感值是30uH,電感線圈電阻是 10 歐姆,電容值是40pF, 期頻率響應之頻寬為何? 9 5. 請繪出高通濾波器與帶通濾波器電路,並請單介紹其訊號選擇之原理。 6. 請找出如下圖函數 g(t) = el 的三角傅利葉級數與 指數傅利葉級數。 | 8(t) KN an - -1.5 -1 -0.5 0 0.5 1.5