このお話はまとめるとどういう話なのでしょうか？

Mama's Bank Account (1) I am Katrin. When I was a child, all my family lived in a small house in San Francisco. My family members were Mama, Papa, my elder brother Nels, my younger sisters Christine and Dagmar, and I. We were immigrants from Norway. I remember that every Saturday night Papa brought home a little envelope with his pay in it. Mama would sit down by the kitchen table with a serious look. She was counting it out. There would be several piles of coins on the table. "These are the rent," Mama would say, and set aside a big pile of coins. "For the grocer." She set aside another pile of coins. "For Katrin's shoes," and Mama counted out the coins. "I'll need a notebook this week." Nels said, and Mama put aside a ten-cent coin. At last, Papa would ask, "Is that all?" Mama would nod and say, "That's good. We don't have to go to the bank to withdraw money."

この写真には、「加速度aの向きと違うFの向きは一致する」と書かれてますが、なぜばね振り子が単振動している時の復元力は、ma=F=ーkxとなるのですか？ 振幅の端？(aが最大となる部分から振動の中心に向かう時は復元力と加速度の向きは同じだと思うのですが…

運動方程式 質量mの物体に力が働くと,物体には加速度 d が生じる。この 関係を表す運動方程式ma=こそ力学の根幹をなすものだ。 それは運動 の第2法則(物体の加速度は力に比例し,質量に反比例する) を式で表してい る。まずは1つ1つの文字の意味を詳しく確認しておこう。 m a →F ma = F 注目物体の質量 [kg] 地面に対する加速度 IV 運動の法則 [m/s2] 注目物体が受けている すべての合力 [N] 39 注目物体はまわりの物体から力を受け, 止まっていたり、動いたりする。 だから, 必ず “受けている力”だけを考えることになる。 力はすべて右辺に 集めておく。 Ativi ちょっと一言 上式から [N] = 〔kg・m/s2] と分かる。 の向きは向き, つまり合力の向きに加速度が生じていることにも 注意を払っておこう。 ほとんどの人が上のベクトル式を見ても通り過ぎてし 1724 まっているが,とても大切な点だ。 Miss 運動方向(つまり速度の向き)には力が働いていると思っていないかい? 偉大なアリストテレスでさえ誤ったのだからしょうがないが、力は速度の向 きじゃなくて、加速度の向きと一致しているんだ。 直線運動ではわかりにく いが,曲線運動, たとえば放物運動になると, その差が明確になる。重力が 鉛直下向きだから,重力加速度gも下向きになっている。でも速度の向きは まったく別。 静止の場合は力のつり合い式をつくった。静止は d = 0 だから運動方程 式より = (⑩) つまり力はつり合っている。 力のつり合いは 運動方程式に含まれている It hall

どうやったらAMの式が出てくるのでしょうか

2点Aの座標は (5,0),点Bの座標は (0,5), [KOK 5 点Mの座標は (02/28) より直線 AM の式を 求めると, 1 5 2 2 x軸の負の部分に ON = OM となる点 N をとり, △BNO を点 22.5 0 を中心に右回りに N O 5-Ax 90°回転すると, △AMO に重なる。 よって, OPIAM より, OP/NB であるから, y= - x+ B /M P

大問5を教えてください🙇‍♀️🙏 (1)は並び替え、(2)は語句を考える問題です。 お願いします。

5 それぞれの問いに答えなさい。 (1) 次の対話文の①・②の内の語句を正しく並べかえて書きなさい。 Bob: Yumi, can you play the piano? Yumi: Yes. I take lessons every week. Bob: ① { you / have / long / learned / how } it? Yumi: For seven years. I started it when I was five years old. Bob: I see. Can I hear your piano? Yumi: Of course. I'm in the music club and we practice every Monday and Thursday after_school.② { come / you / the / if / music room / to } next Monday, you can hear my piano. Bob: OK. 49 〈注〉 take a lesson レッスンを受ける (2) 次の絵は,亜矢 (Aya) の週末の様子を示したものです。絵の内容に合うように,対話文の①~③ _に適する英語を, ① は3語以上,②③はそれぞれ4語以上で書きなさい。 ただし,符号 ( ,. など)は語数に含めないものとし, 1 2,3・･･などの数字は使わないこと。 Aya 3- -9 12 6 3. Jim: Hi, Aya. Did you have a nice weekend? Aya: Yes. On Sunday, Ⅰ went to the lake with my family. ①_ and made lunch with my mother. Jim: That's great! What time did you leave home? Aya: We ② Jim: Oh, it took a very long time! How did you go there? Aya: We 3 We had a good time. and we arrived at the lake at ten. at six,

⑦に入るのが、four hoursなのですが、何故ですか！ 教えてください🫶

A year later, Kabbu was sitting with Ullu and talking about the good old days. Just then they saw Bony. He *hurrying somewhere. 40 was 15 Ullu: What happened, Bony? Where are you going? Bony: I heard there was an *accident near Leo's house. I am going there. Kabbu: Accident! Let's go! They hurried as fast as they could and saw Leo. He was walking around *worriedly. Leo: My son fell down from a tree and hurt his head. He needs an *operation by Dr. Large, the best doctor in this forest. Ullu: Why don't you send him an e-mail? Leo: I can't. There has been something wrong with my computer since last night. We have [way/ come/ask/to/no other/him] here. We will have to wait about three days to *repair it. But I can't wait so long. My son needs an operation right now! Kabbu: That's no problem, Leo. I will go and bring Dr. Large here. Leo: Really... w... will you go right now? Kabbu: Of course! Until last year it took 7 *emergency! I'll bring Dr. Large in half the time. He was right. Four hours later, they saw Kabbu and Dr. Large. They were flying in the sky. They looked very tired. Soon he began to *operate on Leo's son. Leo: How's my son, Dr. Large? Dr. Large: [ about/is/there/to/worry 1. Your son is all right. You should thank Kabbu. I think he has done a great job. I was at home when he appeared in front of me. He didn't give me any time to think about it. I said to him, "You have just arrived after such a long and hard trip. Take a *rest for one or two hours and then we'll go." But he didn't agree. "No, Dr. Large. There is no time to lose," he said. Later... Leo: My dear friend, Kabbu, I don't know how to say thanks to you. You are so kind to me and my family. You lost your job because of the Internet, but you didn't feel angry with me and saved my son's life. New technology may make life easier and give us more fun in many ways, but sometimes it may not be useful and sometimes we can't depend on it. I've learned that your power to help others is greater than the power of any computer! (E) probably < efficiency ** chance i after all やはり wrong with ~ 〜の調子が悪い operate on ~ 〜を手術する rest from here to Dr. Large. But Leo, this is an hurry 急いで行く electronic mail technology #### depend on ~ ~に頼る accident ~を修理する repair 下線部の日本語を英文にしなさい。 - price worriedly 心配そうに emergencyA** a second R concern useless 役に立たない operation Fi 心配

⑦に入る2語を答える問題です！ 答えがfour hoursなのですが、なぜそうなるのですか？私はeight hoursだと思いました！！

10 15 20 5 6 次の英文は Olango という森の中にあるいくつかの村に住む動物たちの対話です。 これを読んで、あとの問いに えなさい｡ Ay 40 was ' Kabbu is head of the Post Office of Olango, a forest. Many kinds of animals live there. Kabbu and his tea carry letters all over Olango and to other forests. Kabbu's Post Office is very popular among all animals there. Ullu: Why are you so sad? Kabbu: *Probably we'll have to lose my job. Have you heard of the Internet? Ullu: Have humans planned to catch us with a new kind of net? Kabbu: No, no. I hear the Internet is new *technology. All the computers can talk to each other through the Internet. We can talk with everyone around the world by a computer. Leo has the newes computer. He is always using it. He has also made many friends through the Internet and talk with them for hours. Ullu started to think about the Internet after he listened to Kabbu's long report about it. Ullu: Tell me, Kabbu, why will you have to lose your job because of the Internet? Kabbu: Leo is now sending e-mails all over Olango and to other forests. He says everyone in this village will be able to use his computer and send e-mails from his computer. Now, if everyone starts sending e-mails, ① 私たちはどうすればよいのかわかりません。 45 Ullu: Wait, wait. Now what is 'e-mail'? I haven't heard of it. Kabbu: It means *electronic mail'. It is used to send every kind of letter from one computer to other computers through the Internet. It takes only *a second and it is almost free. Ullu: I can't believe it. Kabbu: It is true. So I am very sad and worried about it now. With a sad face, Kabbu flew away. Kabbu was the oldest animal in Olango and was respected a lot by Leo Ullu decided to go and meet Leo and talk with him. At Leo's house, Leo was sitting in front of his computer. Ullu: Leo, can you give me a few minutes? I have to talk about something important. Leo: What is it? Ullu: It is about Kabbu, but I think it may be about all of us. Leo: OK, tell me about it. Ullu: But Leo, I think 50 55 1 60 Ullu told Leo about Kabbu. Leo: Well, Kabbu's *concerns will be real. We usually think high speed and *efficiency are very important, so there is little *chance for old ways. I can send a message in a second through the Internet. But Kabbu and his team need a few days to carry one. Why should I *depend on them? And the *price of their mail is much higher than the price of e-mail. Ullu: But, Leo, what will happen to Kabbu and his team? Leo: They will have to 3 The Internet will become more important in the future and e-mail will be one of the most useful things. 4 trains in the future." But now, "No one will go to see a movie." But both... Leo: You may have a lot of things to say about it, Ullu, but soon e-mail will make Kabbu's mail *useless. Kabbu and his team should start looking for other jobs *after all! For example, when a plane was invented, people said, "No one will see trains still continue to run. When a TV was invented, everyone said.

英検2級　writingの添削お願いします。英語が超絶苦手なのでお手柔らかにお願いします。 People around the world live longer they did in the past.Do you think people will live even... Read More

(4)(5)について質問です (4) バネが縮んでから、伸びたばねによって押し返されるところを注目するのはなぜですか？(自分はバネに届く前とd2縮んだ場面について考えようとしていました。) なぜ運動方程式で解こうと思うのですか？ エネルギーでは解けないのですか？ (5... Read More

〔8〕 2008 山形 RS 上には,質量Mの台が垂直面 QR に接して置かれていて、台の上面が水平面PQと同一平面 図のように、水平面PQ上に、大きさの無視できる質量mの小物体が置かれている. 水平面 置かれている. ばね 1, ばね2ともにばね定数はkとし, 質量は無視できるとする. また, 水平面 になっている. 水平面 PQ 上にはばね1が, 水平面 RS上にはばね2が, 一端を壁に固定されて と小物体,台の間の摩擦は無視し,重力加速度の大きさをgとする. vo 小物体をばね1の固定されていない端に接触させ,自然長からd, だけ縮めぞ静かに手を離し た。 ばねが自然長に戻ったところで､小物体はばね1から離れ,水平面 PQ 上を右向きに速さ で運動した. Q(1) vo をm, k, d を用いて表せ. その後,小物体は速さで台に乗り移り、同時に台も動きはじめた. 小物体が台上を時間Tの 間に,台に対して距離だけすべった後、 小物体と台は一体となって水平面 RS 上を右向きに一 定の速さ △ (2) T, V をそれぞれ vo, m, M, g, μの中から必要なものを用いて表せ. (3) を vo, m, M,g,μ を用いて表せ. 台は小物体を乗せたまま, 速さ V でばね2の固定されていない端にあたった.台があたる前の ばね2は自然長であった.その後, ばね2は自然長から最大d2だけ縮み,この間, 小物体は台上 をすべらなかった.ここでは、ばね2が自然長からd2だけ縮むまでの運動を考える. 小物体と台 の間の静止摩擦係数を μo とする. (4) ばね2が自然長からæ (0<x< d2) だけ縮んだとき, 小物体と台の間にはたらく静止摩擦力 の大きさを,m, M, k, æ を用いて表せ. (5) ばね2d2だけ縮むまでの間, 小物体が台上をすべらないためには, ばね1の縮みをい くら以下にしなければならないか.m, M, k, g, μo を用いて表せ. ばね 1 100000001 P 小物体と台の間の動摩擦係数をμとする. で運動した。 小物体 a R 台 2 70000000 S

質問なのですが、この問題では５つに範囲分けしましたが、最終的な答えのaの範囲はどうやって決めればいいのでしょうか、、、どなたか教えてください！！

C4.-2-4a2-a + (V) 151aは定数とする。関数 y=-x2+4ax-a (0≦x≦2) について,次の問いに答えよ。 (1) 最大値を求めよ。 I (11) --[(x-20)²-42²³-a TR₁ (2a. 4a²-a FRB. 20 2 f(₂)= max PR-4 (2<2a+ /<a). (i) f(0.2) = max 4a²-a. (20= (→→ A² ≤) ・定義の中央 (②2) 最小値を求めよ。 u iz Max Tu 答えが2つとも同じ場合 ひの範囲は同じ 0 20 20 31 b fro) - max-a.` (052a<2+05α=)) f(), max Ya-41 (052^<> +0=^=)) f(0) = max -a. 12.0025.-a (α< 0) (20<0 ➜a<0). 2. Danks. the 4a²-a (osa<|) X-2022. Ya-4 (psa).

「そんなあなたは私の自慢の親友です」って英語でなんといいますか？