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英文 高中

第九題不是主動嗎,為什麼是+ed

HOZZJ that pa change Angela Duckworth, an American scholar, gave a TED Talk in New York entitled "Grit: The Power of Passion and Perseverance." The ideas in her talk were later made into a book with the same title, 3. was published in 2016. 4. years earlier, Duckworth accepted a job as a mathematics teacher at a public school in New York. Her talk details how 5. the years, her students gradually taught her that to be successful, natural intelligence alone is not enough. One must also possess what is 7. by a strong determination to known 6. grit. Grit refers to consistent effort achieve a goal. Through detailed research, Duckworth discovered that people with high levels of grit remain highly motivated to achieve their goals 8. giving up on them. In other words, someone with true grit will see himself or herself getting closer to his or her goal day by day. Therefore, that person will always be able to keep himself or herself 9. to achieving that goal. Duckworth's TED Talk and book have since book have since inspired millions remained on The New York Times' bestseller list for almost half a A 10. Her boo following its t a year publication./leave/find +0+ (1. (A) what 學士廟讀 高檢眼 (B) which (C) how CDB (B 2. (A) So (B) (A) 3.(A) which (B) it (C) that (D) 4.(A) Few (00 (B) Little) (C) A little (D) 5.(A) with (B) around (C) until 6.(A) by (B) 7.(A) drives (B) for (C) as tedi. (B) driven (C) driving (A) 8. (A) instead of 9. (A) dedicate (B) dedicating (B) regardless of (C) except for such 這樣的: (C) very (D) same (D) 9gbird) and insinu (D) A fewsl (D) over (D) to be (D) to drive (D) in addition to (D) why HTA. 197 OT (C) dedicated (D) to dedicate 10.(A) in turn (B) around the world 新人会画画 香取湖小匙 (H (C) on their way (D) around the corner 六、文意選填:10% WN (A) worthy (B) discuss (C) technological (D) with (E) increase (F) audience (G) speaks of (H) as well as (I) celebrity (J) by From the beginning, before a word is spoken, it's clear that Molly Wright's TED T mits in a high chair. A little girl walks out, smilin 2 weak pho ask chi

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物理 高中

(第一張照片)守恆的概念是沒問題的,但換符號好像有點問題,mg是怎麼換成mV/r的???還有a是怎麼換成V^2/r的???感覺是我前面換算學得不太好的關係🥺 (第二張照片)想知道c選項的算式是怎麼來的?

範例3 圓周運動的力學能守恆 雲飛車是一種常見於主題樂園中的遊樂設施, ao 其軌道通常有如圖所示的迴圈。若考慮正圓的迴 圈軌道,且軌道可視為在一鉛直面上,雲霄飛車 的車廂在沒有動力驅動之下,沿著軌道內側繞行, 且軌道只能提供向心力,摩擦阻力可忽略,重力 加速度為g,則當車廂可沿整個圓圈軌道繞行時,車廂在軌道最低點的加速度量值至少 為何? (A) 2g (B) 3g (C) 4g (D) 5g (E) 6g 向心力: V₁ F=mg= m JJR VH R + a₁ = JEJR (JSJR) R V₁ R 1=5g A.0) 願選一條長為R的繩子綁住一個石塊,讓石塊一開始在鉛直面上作圓周運 動,石塊的位置可由石塊—圓心連線和水平線夾角表示,如右圖所 Mo 示。若石塊在最低處的速率改為 7gR g為重力加速度,則石塊轉 2 到何處時會脫離如圖所示之圓形虛線軌跡?(已知sin37°=0.6) (A)=30° (B)=37° (C)=45°(D)=53°E=60° R my mg cose 79R 2 ① 力学能守恆 /m() :/mv+mgal1+sine) myR 2 → v² 1 gk (3-4 sino) ② 圓周運動(向心力:張力、動) T+ mg sino - V = 1mg (3-4 sino) →繩鬆⇒7:0 →脫離:與最低點高度差h " R+R Sind ⇒ 0+mg sine = 1 mg (3-45/40> : R(1+ Sine) => sino 0-300 【107. 指考】

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