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問題的種類

英文 國中

想問錯題 謝謝

74 黑檢請書 語文領域×生活圖表題 格格不入的紅貓 Rosie Unit 32 Rosie, the Red Cat Posi Sandra wrote a book report about Rosie, the Red Cat. Name: Sandra Date: November 11th Book Report Book: Rosie, the Red Cat Where does the story take place? In a small cat town. What happened in the story of the book? Though Rosie is the only daughter in the Black family, she has not been treated well since she was born. This is because Written by: Elsa Young Who is in this book? Mr. Black a fifty-year-old black cat, who has two sons and a daughter proud of his sons, who are as black as him disgusted with his daughter because she has nothing in common with him values boys more than girls Mrs. Black she is different from her family a forty-five-year-old black cat, who is a in many ways. For example, she sometimes plays in the mud with dogs and gets dirty, which makes her parents very angry. What's more, she doesn't drink milk as her brothers do. Tea is her favorite. Rosie feels troubled because her family is indifferent to her. When she feels down, she sings. She believes that if she keeps singing, something good might happen. The story ends with a song written by Rosie. It becomes a hit in the cat world. What I think of the story... housewife *seldom sides with her daughter or speaks for her because she is afraid of her husband *unhappy and silent Charcoal * a twenty-year-old black cat, who loves sports and is good at catching mice *strong and healthy Ebony *a nineteen-year-old black cat, who is his father's favorite *smart and handsome Rosie 290字|建議作答4.5分 1. What 字證 (A) Un (B) PL (C) S (D) W A 2. Wh (A) an eighteen-year-old red cat, who loves dancing with mice and makes friends with dogs *has a beautiful voice *often made fun of by her brothers I feel sad about the way Rosie's family treats her. Family should love each other. 3 indifferent 冷漠的 value 評價 silent 安靜的 細節 UP L 【細節 推論 B 19/11

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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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