学年

質問の種類

数学 高校生

赤く丸をしたbの問題で解答の方に二階微分した後の式がなぜ(-1/4)(-1/4)(H-27)になるのか分かりません。教えてください🙇‍♀️

QA At time t = 0, a boiled potato is taken from a pot on a stove and left to cool in a kitchen. The internal temperature of the potato is 91 degrees Celsius (°C) at time t = 0, and the internal temperature of the potato is greater than 27°C for all times t > 0. The internal temperature of the potato at time t minutes can be modeled by the function H that satisfies the differential equation dH (H- (H-27), where H(t) is dt measured in degrees Celsius and H(0) = 91. (a) Write an equation for the line tangent to the graph of Hat t = 0. Use this equation to approximate the internal temperature of the potato at time t = 3. (b) Use 2017 APⓇ CALCULUS AB FREE-RESPONSE QUESTIONS (a) dH d²H dt² to determine whether your answer in part (a) is an underestimate or an overestimate of the internal temperature of the potato at time t = 3. (c) For t < 10, an alternate model for the internal temperature of the potato at time 7 minutes is the function -= − (G - 27)²/3, where G(t) is measured in degrees Celsius dG G that satisfies the differential equation dt and G(0) = 91. Find an expression for G(t). Based on this model, what is the internal temperature of the potato at time t = 3 ? 564 at (21-27) - == 2-16 To = - = (H(3)-27) 4 -64 = HB)-27 -37 = H (3) (b) _d²fi © 2017 The College Board. Visit the College Board on the Web: www.collegeboard.org. GO ON TO THE NEXT P

回答募集中 回答数: 0
物理 高校生

48番で、Bに対するAの相対速度を求めて この値が負になるからAは左に進むとわかると思うのですが、 なぜこの相対加速度が負とわかるのですか【なぜF1の方が(M➕m)μgより大きいと言えるのか】? 付箋にも一応書いてます☝️

118 47 AtBも右向きに 力な注意が働くか から必す右に jote B 48, | BETT AはBに対して(厚掛 動くので働く 24 119 A 46615 INAの BILLLLLLLL as M 4 map=fS=uN よって、 17. e steps ☆静止している物体に働ぐ→静止力たわ ・動いている物体に低く→動 max=Mmg Da=Mg 作用・反作用 → Fo F₁-(M M At (4) F M 呼Fの方が ALSELT A Frilden 止まっているもの AAB = AA - AB 大きとる? •. Zbrit Aは動いている ・静止していると · Bに対するAの相対速度(Bes(An勤注意)は、 = Mg - F₁ - ing A V6=0 初めは静止してるから AB 0 Fi> (Monday FinTRZENNE. 員の気にはならばと BがFoで引かれるとすると、 まず「B」だけに働く摩御 AとBどちらも動いていたら考えにくい 相対加速度で考えてみよー!(どちらか一方を静止した状態で考える) Aの本掛力と作用・反作用でや同じだから を書く。そして、Bの厚で 作用・反作用の力を受けるのか 「A」の摩擦 No. Date 食より、Bからみたとと、Aは左向きに進む。 = F₁ = (4 (m) 42 F₁-Mmg M a = 動いている物体は、進行方向と 逆向きに動力を受ける Map = F. -μmg AB= X>017- mitm mtM ++ いている これは、右向きを正としてるから、 左向きを表す「」がついてる AがBの上を滑る時間で加速度が一定がって、 等加送立運動している。左向きを正とすると、 よって、x=Vox+2/2/2² ² l = ¹ = a +²₁² [²²) pa += √2²=2Me ようこ Fi-(Mtm) μg

回答募集中 回答数: 0
英語 高校生

文法の間違いや言い回しが変でないかなど添削して欲しいです。お願いします🙇🏻‍♀️

コミュニケーション英語ⅡI 表現課題 ⑤ 1.物語を作ってください。 タイトルもつけましょう。 ただし、教科書 p129 の 1 2 の 10 個の文の中から2 文、3の指示に従って作った英文1文の計3文は必ず含めてつくること。 使った3文については、赤で下線 を引いておくこと。 分量は250語以上書いてください。 語数は自分で数えてタイトルの行に書いてください。 ( 締切 / ) 21で作ったお話を授業内で発表します。 発表時間は2分以上6分以内です。 しっかり覚えて、 何も見ずに発 表できるように準備しましょう。 went Title 45 Once upon a time, there was a little girl named Mary She lived with her sick mother. The doctor wanted to Cure her mother's illness, but the problem is that he didn't know how to cure her. Then Mary thought that she might find out Something if she meet to a knowledgeable old man in town, so she is The old man said, "My wife had the same ? disease. But the medicine I got cured her." He had a provid expression. Mary asked him where he could get the medicine. 23 to the man. 82 " IL It's a scary witch's house," he said. Mary was scared, but 104 decided to go to the witch's house for her mother. After that, 116 She got a map and walked to the witch's house. 語 11 22 33 126 After walking for a while, it got darker and darker, and 139 it was very spooky. Mary was frightened but kept walking. 129. It was then. She found the witch's house! She was so happy that she opened the door without knocking. There was a witch there, and she said You are a bad girl to come into my house without knocking". The witch transformed her into a toad. She cried because she had not expected the witch was so Terrifying. Still crying, she insisted to the witch that she desperately wanted the medicine. The wich was mored by Mary's impassioned appeal. And the witch said of If you give me ten years your life, I'll give you the medicine? She accepted the offer. The witch restored her original form. and extracted the medicine from the flowers. Then she thanked the witch and returned home safely. Mary's mother was cared by the medicine and lived happily with Mary. Later that day. and she asked Mary went to thank the knowledgeable old man him how to convinced the witch to give the medicine. He said, 「 11 I told the witch that I would give you the life cr 11 of the next person who visited you for 10 years." (55

回答募集中 回答数: 0
英語 高校生

至急❗️答えが合っているか見ていただきたいです🙇 よろしくお願いします

5) (6) (7 (8 (9 50 LESSON 13 Choose (bammolni Encame\\ probare veng hyppor\2262720109 bas Juode) zaronial 1 Choose the best answer to fill in the blanks. (1) (1) There was ( ) audience at the movie theater. Da large 3 many 2 large (4) As I had a bad cold, I was made ( 1 take (2) Always keep a bucket of water handy, ( 1 unless in case of (3) My teacher recommended several books to the class, ( 1 that A 2 which (5) Someone hit me on 1 a (7) I am sure ( 1 not his (8) The girl ( 1 who helle ) fire. 3 to prepare (10) To begin ( 1 at (12) 157 (nodw\ jol 3 one of that 2 to take to take the time. 861 (6) The picture is said (dule) just before he died. 3 be taken having been drawn check my smart2 to be drawn 3 to have been drawn 4 to have drawn (11) This restaurant is ( (1) more (千葉工業大) (四天王寺国際仏教大) 4 his t me on (r) head. an\ayab\board blood) best Foob slijpst 2 an 3 the ) coming to the party. 2 his not 共立女子 ibidezog\mobsent\mont Vi word ) the bitter medicine against my will. 4 taking (9) It is only 6 o'clock in the morning. She ( 1 may still asleep 3 may be sleeping 3 of his not 4 much bit of 4 ready on ) has become a one of which ), you must buy an admission ticket. 2 on with KURSE 4 of not his blan) at this time. 2 might have been sleeping 4 might still asleep ) sweet voice John loves is a good singer. aviah Lotus A 2 what 3 which whose bestseller. 4 from ) nicer than the one I visited last week. 2 too 3 as 4 far (関西学院大) AS (13) Some of the milk turned sour before it reached the market and ( 1 must throw 2 have to be thrown 3 had to throw had to be thrown (近畿大) THIOS (ALLE) (大阪経済大) ) that such a thing would happen to all of the guests staying at the hotel. Little did I dream 2 Little dream did I 3 Little I did dream 4 Little dream I did away. (神奈川大) (奈良) 2 (東邦) (清泉女子大 (1) (芝浦工業大) (2) (3 (²

回答募集中 回答数: 0
英語 高校生

至急、解答を教えていただきたいです!! 比較級を使った慣用表現です よろしくお願いします🙇🏻‍♀️

24. Light can travel ( 光は何よりも速く伝わる。 Practice 1 ( )内から適切なほうを選びなさい。 回 1. The older you grow, (the wiser / more wise) you become. 2. The princess became ( better and better / more and more) attractive. 3. Beth studies the hardest (in / of) us all. 4. She is one of the most successful ( designer / designers) in the world. 5. I think this question is (very / by far ) the most difficult of the five. 6. This shrine is the (three / third) oldest building in this town. Practice 2 1. Honshu is 2. Mickey Mouse is 3. Diamond is 4. No other book is 5. No other desert in the world is 6. No one in my family goes to bed 1. 1. (a) The cheetah runs ( (b) The cheetah runs faster ( 2. (a) He thinks time is ( (b) He thinks nothing is ( 3. (a) John ( (b) ( Practice 4 [ ]内の語を適切な形にして, 最上級の意味を表す英文を完成させなさい。 BC island in Japan. [big] character in the world. [famous ] Practice 3 絵に合うように、英文を完成させなさい。 C 37.87km* )( 日本 ) ( ) ( 1. Japan is ( 2. Germany is ( 3. Australia is about ( )( )( )( )( )( (35.7万km²) )( any other mineral. [hard] 絵に合うように、英文を完成させなさい。 総合 )( )( to me than the Harry Potter series. [interesting ] as the Sahara Desert. [large] than my sister. [early] Ty ) of all animals. )( ) precious thing. ) as time. ) than any other student in the class. ) in the class is as smart as John. 769.255 km² )( オーストラリア ) as Germany. ) Australia. 3 ) as large as Japan. John ) animal.

回答募集中 回答数: 0