國中 解答

下圖為某金屬元素的表示方法,有關此元素的敘述,下列何者正確?

小胖想要吃稀飯,媽媽煮稀飯時邊教小胖說:「用鍋子煮稀飯的時候,稀飯容易燒焦,你要用湯勺攪拌底部的稀飯,不然就會產生苦苦的味道,很不好吃喔!」,稀飯容易燒焦的主要原因是,煮稀飯時何種熱的傳播特性較差所致?

小胖確診COVID-19且發高燒,媽媽拿溫度計測量體溫,結果溫度計上顯示為攝氏40度,試問此溫度相當於華氏幾度?

請問,上列裝置設計圖中,哪些可在光線強時,安培計的讀數大;光線弱時,安培計的讀數小?

請問,上列裝置設計圖中,哪些可在光線強時,安培計的讀數小;光線弱時,安培計的讀數大?

圖(9)中,甲、乙、丙為三個帶有同電性的小球,位於一直角三角形之三頂點上, 若甲球所帶電量為32庫侖,乙球所帶電量為24庫侖,丙球所帶電量為3庫侖,甲球 受丙球的靜電力大小為6F,則丙球受到甲球和乙球靜電力的合力大小為何?

圖(8)為電擊式捕蚊燈的電路簡圖,利用蟲的趨光性,當捕蚊燈接在110V的電源時,由燈管發出長波紫外光來吸 引昆蟲靠近。當蟲飛入捕蚊燈時,它的導電性造成二極間高壓放電產生電弧火花,用電擊方式使蚊蟲死亡,若蚊子的 電阻為5歐姆,當蚊子飛撞相鄰兩金屬條時,通過蚊子身上的電流大小為多少安培?

電視報導,某鄉鎮因鳥類停在電線上而造成短路,致使很多的用戶停電。 若圖(6)為電線電路的示意圖,則鳥的兩隻腳可能同時站在下列哪兩點,而造成短路? (鳥本身的電阻遠小於電器的電阻)

對於任意材料而言,其兩端電壓與通過電流的比值,稱為電阻(R),電阻顧名思義,就是阻礙電流流動的因素。 電阻越大,表示阻礙越大,電流越難流動。所以在相同電壓的情況下,電阻越大,電流會越小。則影響電阻的因素有 (甲)材料 (乙)截面積 (丙)長度 (丁)溫度

如圖(1),每秒通過導線截面的電流為2000毫安培,則在5分鐘內通過此截面的總電量為多少庫倫? (習作P.37)

“Hello. I am Andy. There are five in my family. I have a handsome father, he likes to cook. My mother is so beautiful, she can sing well. Also, I have a twin brother and sister, they are so cute, right? The last one is my furkid, he can jump up and down the stairs, and he likes to eat carrots. That’s all of my lovely family.” Which animal is Andy’s furkid? well很好地 twin雙胞胎 stair樓梯 carrot胡蘿蔔

When do furkids get more than young people? more than多於

There are many people take furkids as their children. They treat them like the real kids. Below you can see the number of young people under 15 years old, and the number of furkids these years in Taiwan. Maybe next time, you can see a furkid on the stroller, not a baby. naughty頑皮的take...as當作treat對待 real真實的below在...下面 stroller 嬰兒車 46. What is “furkids”?

Right? 40.

I see. Look! There is a child _____ after the rabbit.

A:Peter’s brother _______ a police officer, but his sisters________. They are teachers.

Father’s Day in Japan is ____the third Sunday ___ June.

A: Is Thomas’ concert in _______? B: Yes, I can’t wait.

Hurry! It’s time for class. Can you ____ me?

Wow! You get a gift. You are so ________.

I’m very ________. Can you give me some cookies?

Basketball is my favorite sport. It is __________ to me.

Jack: Look! There is a rainbow in the sky. Which is your __________ color? Zoe: I like purple.

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