不太懂 A受到導線B的作用力方向 這句 有人可以仔細講講意思嗎

所產生的磁場作用,試問 受力方向為何? (A)方向向南 (B)方向向北 (C)方向向上 (D)合力為零。 A. ) 3.小泰將A、B兩條通電的長 直導線穿過紙板,且兩導 線在同一水平面上,如右 圖所示,則導線A受到導 線B的作用力方向為何? A (A)向上 (C)向左 wnere might they 容:唉啊。女:怎麼啦 (B)向下 (D)向右。 ()【 (B) (C)川 (D)I 答: 9.乙园 (A) (C) 答 上 10.甲 左一 •右 下 (A (B (C (C 答 7-2 gernails can't Help you. But I can. M: Okay. Well, it's Jenn

想問一下選擇2跟選擇3

food value grass •People eat their meat. •People use wool to make clothes. trees • People eat their meat. • People drink their milk and turn it into cheese. (C) Their tails point the same way. (D) They usually live for over eight years. Long working hours are a problem in Taiwan. People in Taiwan often work longer hours than people in other countries. In fact, in 2017, working hours in Taiwan were the fourth longest in the world. To protect the workers, Taiwan decided to make some changes to the labor law in 2018. Here are some examples. 1. Workers need to have at least one day off every seven days. 2. The working hours on a work day can't be over eight hours; for every four hours, workers need to take a break for half an hour. Also, workers can't work more than 40 hours a week. 3. When workers need to work more than eight hours a day or 40 hours a week, companies need to pay them overtime for each hour. 4. Workers can't work more than 12 hours a day, and their overtime working hours can't be longer than 54 hours a month. g lifespan 壽命 wool綿羊毛 value 價值 tail 尾巴 (B) point 指向 1. Why did Taiwan change the labor law? (A) To protect companies' rights. (B) To have workers get enough rest. (C) To help people make more money. (D) To make workers' overtime pay lower. 2. Gabriel works eight hours a day. However, he came into the office at 9 a.m. yesterday, took two 30-minute breaks, and kept working until 8 p.m. How many hours does his company need to pay him for overtime? (A) Two. (B) Three. (C) Eight. (D) Eleven. (A) Who is NOT following the new labor law? (A) Rose worked for 55 hours last week. (B) Nathan only needs to work four days a week. (C) Linda worked overtime for 25 hours last month. (D) Sandy worked every day without any days off last month. g at least 至少 off 休假 overtime 加班(費) 一、依提示作答。(每題3分,共6分) 1. Selena is a terrible singer. (用sing改寫句子) Selena sings terribly, 2. Meg runs more slowly than all the other students in the class. (H) Meg runs the most slowly in the class 翻譯。(每題3分,共9分)

有人知道這到底要寫什麼嗎😭課本都找不到😭

理學 150 ) 二、 .間腦:視丘、下複 三、腦幹: 四、 (一)中腦:大腦巴 (二)橋腦。 (三)延腦:錐體 小腦 (

有人知道這到底要寫什麼嗎😭課本都找不到😭

理學 150 ) 二、 .間腦:視丘、下複 三、腦幹: 四、 (一)中腦:大腦巴 (二)橋腦。 (三)延腦:錐體 小腦 (

27.為什麼是A？ 30.為什麼是D ABC為什麼不行？？

2680) of as For four hundred years, William Shakespeare, 26 the greatest playwright that the English world has ever had, has left a lasting mark on later theater and literature. Of all his 38 plays 27., study and play, I like Hamlet the best. When Prince Hamlet knew his father was killed by his uncle, to 28. his mother got married again, he was troubled 29. he should - give up his sad life or keep it on to fight his uncle and become (PR) the king. The words he cried out "To be or not to be, that is the question," 30. over and over again by thousands of millions of people and have become one of the best-known lines in history. B) (D) 26 (A) who has thought ( playwright 劇作家 literature 文學 (C) that people have thought 27. A) that we read A C have read 28 (A) who 29. (A) that (B) that (B) if (B) who people thought has thought Bare read 0. (D) have been read 已經被議過 (D) X (C) whom (C) how (D) why (80) (A) that have been repeated ☑) being repeated (C) which have been repeated (D) have been repeated

（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】

求解

2. Al f w a plane for the first time yesterday. He finally made his dream come true. 3. A: Let's meet at 7 p.m. Is it c B: Sure, I'm free tonight. 4. The church is a t for you? s from my house. It only takes me five minutes to walk there. 5. Joe has at d baseball cards. He knows a lot of baseball players.

求解

依 THE 6從0.1.2.2.3.3.3.4.5數字堆中:則: (1)任意取三個相異之汉字.可排放個三位权 (2)承第(小小小題,这些三位权中,有個3的倍权 (3)任取4個权字排成4位权,可排成 個4位权 DATE.

請問有人知道的1.2.5.6.12.14要怎麼訂正嗎 求解

on. ap tightly wh ich of chilk is full. at the bottle in ve oven. 姓名: *(B) 9. 九年級 自然(六) 5 1~2章 複習 單題 基礎學力題每題3分,共66分 B 1. 將甲、乙兩電阻器分別與檢 流計及1.5伏特的電池連接 如右圖,當按下開關時,若 G. 檢流計讀數為0.1安培, 甲 (★表重) 0.1A. 檢流計 檢流計 乙 G,檢流計讀數為0.2安培,則下列推論何者正確? C (A)甲電阻器的電阻較小 × (B)甲電阻器兩端的電壓較小 (C)乙電阻器的電阻為0.3歐姆 (D)乙電阻器消耗的電功率較大 R = 1 415 2 有A、B兩個電熱水器,已知A的標示為110V、 1200W,B 的標示為220V、1000W,則在正常電壓 下使用,欲將1公升的水由常溫加熱到沸騰,則何者 較省時省電? (AA較省電但費時 (B)B較省電但費時 x lov 112000 220 (C)A較省時,但消耗電能一樣 X (D)B 較省時,但消耗電能一樣 3.一電路裝置如右圖所示,此時甲、 乙燈泡都發亮。按下開關S接通電 甲 m

求解第二題

10.一盒中有10個球,球上分別印有號碼1,2,3,4, ****** 10,試求: (1)由盒中一次取4球,則4球之號碼中第二小數目是5的情形有幾種?(5分) ②由盒中一次取4球,則4球之號碼恰2個連續自然數的情形有幾種? (1) 如:(1,2,4,7),(3,5,7,8),(2,5,6,9)(5分) -5 4x C2 = 40 (2) 12345678910 (1.2)、(9.10): other C2x2=42 C₁₂ x7 = 105 9組 42+105-2組連2 = 147-C2