東北大学令和5年度AO入試理学部物理系の問題です。解答がない上、解きすすめ躓きました。よければ(4)以降教えていただけると幸いです。よろしくお願いします。

問2 図2のように xy平面内を運動する荷電粒子を考える. 紙面表から裏向きに磁束 密度の大きさBの一様な磁場がかけられている. 荷電粒子の質量をm, 電荷をg (g>0) とする. 重力の影響および荷電粒子の運動による電磁波の放射は無視できるとする. 以下 の問題では、粒子の速度および加速度が粒子の位置(x,y) の時間tによる微分を用いて, dx dy) および (az,ay) = dvdvy と与えられることに注意すること. (Vx, Vy) = dt' dt. dtdt (1) my 平面内での荷電粒子の速度が (vェ,y), 加速度が (azsay) のとき, 荷電粒子の運 動方程式を m, ax, ay, Us, y, 豆, B を用いて表せ. (2) 荷電粒子の時刻t = 0 での速度が (ux, y)=(V,0)であるとき,一般の時刻 t (t> 0) での速度は (ひz, y) = (V cos wt, V sin wt) となる. ここでw, V は定数で ある. この式を問 (1) の運動方程式に代入することによりωを求めよ. 次に図3のように, 一様磁場に加えて,大きさ E の一様な電場をy軸の正の向きに加 える. (3) 荷電粒子が時間によらない一定の速度 (uz, Uy) で運動しているとき,その速度 (ux, uy) を B, E で表せ. う (4) 問 (3) 一定速度 (uz, Uy) で動く観測者からみた荷電粒子の速度を (ぴっぴY), 加速 度を (ds, dy) とするとき, 運動方程式をm,d's dy, 2,4,B,Eのうち必要なも のを用いて表せ. (5) (4) において, 時刻 t = 0 での速度が (v^2)=(V', 0) であるとする. 問 (2) の 結果に注意して,一般の時刻t (t> 0) での (vay) をt,w, V' を用いて表せ.ここ 問 (2) 解である. (6) 静止している人から見て, 荷電粒子が時刻 t=0において位置(x,y)=(0,0) から 初速度(vェッuy) = (0,0)で運動をはじめた. (a) 時刻t (t > 0) での荷電粒子の速度 (vx, y) を t,w, B, E で表せ. (b) 時刻 t (t > 0) での荷電粒子の位置 (x,y) をt,w, B, E で表せ. (c) 荷電粒子はæ軸 (y = 0) から離れたあと, 時刻 t = T (T> 0) で再び軸上に 戻った. t = 0 から t = Tまでの荷電粒子の軌跡の長さLをw, E, B で表せ. 磁場B 速度(vェッy) 荷電粒子 図2 -X 磁場B 図3 電場E IC

この問題が2回連続間違えちゃってやり方が分かりません߹𖥦߹ 4x²y²が12x²y²になっちゃいます🥹

3 = (x² - 2xy + 4y²) (x² + 2xy + 47²) (A +44²)(B+4 y²) AB+ SAY ² 8 By²+/6y4 = (x² - 4x²y²) + 8x²9² - 16 x y ³4 8x²³ y ² + bxy³² + 1644 4 X² + 16 4 4 + 12x²y ² 2 >

現在完了形教えてください

)内の語を適切な形に変えて、 現在完了形の文を作りなさい。 1. Joe is walking on crutches. He (break / bone) in his leg. 2. You answer the phone and the caller asks if she can speak to Jennifer. You say: I'm sorry, Jenny (go out) 3. The temperature was 8 degrees Celsius this morning, but it's now 20. You say: The temperature (go up) quite a bit. 4. Jessica is very badly sunburned. You ask: How long (sit) in the sun? 5. The snow started to fall a couple of hours ago. It's still snowing thick and fast. for more than two hours. You say: It (snow)

一枚目は合ってるか、二枚目は分からないので教えてください。

2 Forming the tense 動詞を正しい時制にする。 Put the verbs into the correct tense. 1 Lisbet's parents weren't born (not born) in the US. 2 Lisbet and her family goles) every day. (go) to the beach 3 In the picture, Lisbet is surfing (surf) at the beach. 4 Junichiro's father works (work) in I.T. to work 5 "I'm going (work) for my father after the course," says Junichiro. 6 In the picture, Junichiro is sitting (sit) on his motorcycle. 7 Marina doesn't work (not work) with Tomás. 8 "I am acting (act) in a production of Hamlet next year,” says Tomás. 9 In the picture, Tomás and Marina are walking (walk) by the river.

これの和訳して貰えませんか？

5 Reading Passage 10 15 20 Yuna Kim is one of the world's best figure skaters. At the 2010 Winter Olympics in Vancouver, she set three world records. In fact, one of those world records broke a record she set in 2009. program and a At the Olympics, both male and female skaters perform a short seven program. In the short program, skaters have less than three minutes to perform required jumps, spins, or other moves. While doing these seven things, the skaters also have to show judges how well they can put these elements together into a kind of dance performance on the ice. The long program is similar to the short program except that skaters perform for a longer time and have more required moves. long Before the 2010 Winter Olympics began, many people thought Yuna Kim was likely to win a gold medal. Certainly, there were other women skaters who had the skill to win gold at the Olympics. However, Ms. Kim had an advantage. She had already set a number of world records. In 2007, she set the record for the highest score in a short program with 71.95 points in Japan. The same year she also set the world record for the highest score in a long program with 133.7 points in Russia. Then, in 2009 she beat her own record in the short program by scoring 76.12 in the United States. At that competition, she also became the first woman to score over 200 points with her short and long programs - her combined score was 207.71. The next year at the Winter Olympics in Vancouver, she broke her records again. In the short program, Ms. Kim scored 78.5, a new world record. In the long program, she scored 150.06, another world record. This gave her a combined total of 228.56 points, a third world record! Needless to say, her score was enough to win gold.

8番ですが、本文の内容に合っているか合っていないか、どちらにもとれそうで迷っています。 教えていただきたいです。

20 D 007 feel guilty about eating so much. People tease me for being fat and I pretend it Hello Sarah) I've put on a lot of weight recently. I make myself sick when I doesn't bother me, but I cry myself to sleep. My family says nasty things about my size, too. Please help me lose weight. 5 15歳の女の子の悩みの相 Barbara, 15 Sarah says: Hello, Barbara. Please try to stop making yourself sick. Beauty comes from within and in all shapes and sizes. The main thing is to be healthy. This can be done through your diet and by exercising. (It's unkind of your family to tease but pl" t ↳ To Tease 10 maybe they don't know that it upsets you So tell them how you feel. Ask your mom to help you follow a healthy, low-fat diet. Cut back on potato chips, cakes and sweets. Why not take up swimming or jogging? By eating healthily and exercising, your body will naturally reach a healthy weight. Don't skip meals, go on a crash diet, or make yourself sick. You may damage your body 15 if it doesn't receive the right nutrients. If you can't talk to your mom, your doctor will help. If you are unable to stop making yourself sick, call the Eating Disorder Association Helpline. Eating Disorder Association Helpline 01603765 050 Monday-Friday, between 4 p.m. and 6 p.m. Email: eda@netcom.co.uk

わかりません🥹助けてください。

Task 3: Look at the following. Complete the crossword using English words that match the Japanese clues. 下記を見てください。日本語のヒントに合う英語の単語を使い、クロスワードを完成させましょう。 8 2 4 ACROSS 1. 管理、経営 2. 詳細､細部 3. 増加 4. 協会、組合 5. 誰の 6. 測る, 計測する 7. 訴訟、スーツ 1 6 9 13 10 into 29900163 h6mw 0101 3 700 8. 祖父 9. 後ろの 10. 意味 11. 電話 12. 選挙 13. 演説する、話しかける 14. なかなか、かなり 15. (提出などの期限が来た quids below.zewemmevog DOWN 14 swe in 15 5 産業大学 11 UNIVERSITY 12 Task 3

比較級の単元なのですが、四角1の(4)はなぜこのような和訳になるのですか？

160 Unit 17 THIRD STAGE Her second [Reading] 1 次の英文を日本語に直しなさい. □ (1) That boy is as bright* as a university student. あの男の子は大学生くらい頭がいいです。 □ (2) My brother received* more chocolates than me on Valentine's Day. Valentine's Day [ for 私の兄はバレンタインに私立多くのチョコレートを受 (3) My father looks much busier this week than last week. 父が先週末より今週末のほうが疲れてみえます Her second novel is not so famous as her first one 彼女の2冊目の小説は1冊目より有名ではないです。 (5) Because of your efforts*, we were able to get better results* this y あなたの努力のおかげで、私達は良い結果を見ることがで (6) My test score* was ten points* lower than yours. 私のテストの点数はあなたのよりも10. 低かったです。 7) The population* of this country is much larger than that of Japan. その国の人口は日本よりも大きいです。 2 次の各文の [ ]内の語句を並べかえて全文を書きなさい. また, その文を日本語 (1) Your essay on Japanese culture than / better /is/mine / much ]. Your essay on Japanese culture is much better (日本語) あなたの作文は私のよりもとても良いです。 日本の文化についての (2) I can't understand your English. Can [more/ speak / a little / sl can't undactoureel T bl

自己採点が不安なのでお時間ある方に採点していただきたいです。

4. ライティング 15 ● 以下の TOPIC について、あなたの意見とその理由を2つ書 きなさい。 ●POINTSは理由を書く際の参考となる観点を示したもので す。ただし、これら以外の観点から理由を書いてもかまいませ the future Ⅰ have Two reasons why I think ん。 so. To begin with, father increase telework 語数の目安は80語〜100語です。 ●解答は、右にあるライティング解答欄に書きなさい。 なお、解 these days. It makes him so relay and no 答欄の外に書かれたものは採点されません。 ● 解答がTOPIC に示された問いの答えになっていない場合や、 strees. In additon, I think so that spreds TOPIC からずれていると判断された場合は、0点と採点され Internet technology. Insing ipad in school. ることがあります。 TOPIC の内容をよく読んでから答えて 53 ください。 合う There are young people using it. For these reasons, I think the number of these people will increuse in the fature. TOPIC Nowadays, more and more people are at home and teleworking. Do you think the number of these people will increase in the future? POINTS Communication • Infectious disease • Internet technology 英検2級 weknow by Interstate 練習シート interstate.co.jp 練習日: 2/2 ④ ライティング解答欄 指示事項を守り、文字は、はっきりと分かりやすく書いて下さい。 太枠に囲まれた部分のみが採点の対象です。 Skype セッションで添削を予約>> I think the number of these people will increase in 10 15

なぜこのような前置詞がおけるのか知りたいです。 宜しくお願いします*_ _)

IV. 各組の ( 31. 内に共通に入る語を語群より一つずつ選びなさい。 ) the TV. You've been watching it for more than three hours. ) just on time. Turn ( The airplane took ( ) me. We should put a clock ( 32. You can rely ( 33. Chris stopped ( I had my essay checked ( ) my teacher. 34. Should I write ( I came up ( 35. We need to think ( ) the wall. ) a coffee shop before going to work. 37. He gave me a card ( ) a pencil, or a ballpoint pen. a better plan. Angela jumped ( 36. The brothers were brought ( 38. She is not aware ) again about this problem. ) the fence. ) in Kobe. Sarah heard a bird sing. Then she looked ( ) my birthday. In order to open the door, I was looking ( ( ) the new rules. It is difficult to get rid ( 39. This TV program is aimed ( It will cost you $1000 ( 40. We used to play baseball ( A baby sitter looks ( ) a bad habit. ) children. ) most. ) in the sky. ) the key. ISOS ) school. ) my baby when I am working. <語群> 1 after 2 up 3 on over 5 by of 7 off (8) at with for