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物理 大学生・専門学校生・社会人

電気電子回路です。 この分野の専攻ではないのでできるだけわかりやすく説明していただきたいです。 よろしくお願いします。

R (1-1) 10, (1-2) 20 (1-3) 30, (2-1) 10, (2-2) 30, (2-3) 15, (2-4) 10 (1) 演算増幅器 (operational amplifier) 抵抗 (resistance), キャパシタンス (capacitance) から構成される回路 (circuit) について以下の各小問に答えよ.なお,図中の記号は以下の凡例に従うとする.また, 正弦波交流電 圧 (sinusoidal AC voltage) は複素数 (complex numbers) 表示されており、 その絶対値は実効値 (effective value) を表すとし,演算増幅器の利得 (gain) 及び入力インピーダンス (input impedance) は無限大, 出力インピーダ ンス (output impedance) は0であるとする. 虚数単位 (imaginary unit) が必要な場合には」 を用いること. V V. d+o 凡例 + 図1 aR R otol C tr (11) 図1に示す非反転増幅器 (non-inverting amplifier) の利得 A = Vout/Vim を求めよ。 なお は 0 または正の実 数である。 Vout V (12) 図2に示す回路において, 角周波数 (angular frequency) の正弦波交流電圧を印加した. 回路の利得を =vk/vo としたとき、βの絶対値を最大とする角周波数 ac を R, Cの式として示すとともに, w=a の 時の入力電圧に対する出力電圧 Pb の位相差 (phase difference) を求めよ。 (feedback circuit) として図2の回路を追加した図3の回路を考える. 今,α を0から 回路 (13) 図1の回路に 連続的に増加させながら出力 Vout を観測したところ、あるαの時に発振 (oscillation) を開始した. この時 の及び発振周波数 (oscillation frequency) を R, Cの式として示せ . 抵抗値R を持つ抵抗 〇 静電容量 (electrostatic capacity) Cを持つキャパシタンス ○ 正弦波交流電圧を出力する電圧源 演算増幅器 接地 (earth connection) C R 3 図2 Rok 20 V₂ V₂ aR 図3 R Vout -o

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英語 高校生

考えても分かりません。解答お願いします

20 Unit 1 - History - Gutenberg is famous for inventing printing, but he didn't really invent it. He invented a better way of printing. [2] For hundreds of years people used blocks of wood* to print. They used a knife to cut words backward in the block of wood. Then they covered the block with ink and pressed it onto paper. When they pulled the paper from the inky blocks, the words appeared on the 金属 5 paper in the right direction. In Korea and China, people printed with metal type* instead of 右向き wood. (2)Either way, printing was difficult and very slow. It took several years to make one copy of a book. [3] Books were very expensive and rare. Only ( 3a ) people could buy them, and ( 3b ) 10 people could not read. But, as ( 3c -) people learned to read, books became more popular. So people wanted to find a quicker, better and less expensive way to print books. One of these people was Johannes Gutenberg. opsugas.l Y tinU 9003 iinil 4 Gutenberg was born in Mainz, Germany, around 1400. He was good at working with metal, but probably had no idea how people printed in China. His idea was to make a piece Clarey operan 15 of metal type for each letter of the alphabet and use the letters (4)over and over. (5)He could put the type together to make words and arrange words to make pages. With ink on the type, he could press paper on them to print a page. A "printing press" machine could make hundreds of copies of a single page quickly. After that page, he could rearrange the same letters to make other words and print other pages. LISSH Si nou 5 It took Gutenberg a long time to make the type for each letter of the alphabet. When he finished the type, he didn't have enough money to make the printing press. He borrowed money from a man named Johann Fust. After many years, Gutenberg's printing press was Legione ready. Gutenberg printed his first book, the Bible, around 1455. 6 There are only twenty-one complete copies of the original Bible. They are some of the 25 most expensive books in the world. In 1987, part of a Gutenberg Bible sold for $5.3 million. 7 Today people remember Johannes Gutenberg. The city of Mainz has a statue of him and a museum. His original printing press is in the museum. (6)They print several pages a day to show that it is in good condition. earoviaU 012mu 394 words/#IN block of wood: type: vrigsypola 01 sind 7 an Oupside down & 下線部 (6) を日本 7. 本文の内容に合わ Many people & Gutenberg g Gutenberg Olt was a long Though Gu cost a lot of Hannes Rotest

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英語 高校生

答えを教えて欲しいです

Past Tense, Past Progressive (2) Warm Up! (1) ( に入れるのに正しくないものを1つ選んでください。(b) Warm Up He began to practice karate only ( ). 1. recently 2. two weeks earlier 3. these days 4. one week ago Part 2: Grammar Section 《解説と解答》 「彼はつい最近 (2週間早く; 先週) 空手の練習を始めた」 という意味ですから、 3. these days のみが、 過去形の動詞と共に使えない表現です。 these days は 「このごろ (最近)」 という意味で すが、 現在形 現在進行形や現在完了形とともに用います。 Warm Up! (2) ( に入れるのに最適な表現を1つ選んでください。 John didn't want to see me because he () his lunch. 1. once had 2. was having 3. has 4. took 《解説と解答》 「ジョンは昼食中だったので、私に会いたがらなかった」 という意味ですから、 ジョンが私に会い たがらなかった理由を完成させます。 私に会いたがらなかった時に進行していた動作が「昼食を取る」 ことですから 2. was having の過去進行形にするのが適切です。 なお、 have lunch の have は 「食 べる (eat) 」 の意味ですから、この意味の場合haveは進行形で用いることができます。 Exercise 5: Fill in the blanks in these sentences with one of the choices below. 3. A pine tree (a) stands 1. While Cindy. (a) was playing (b) is playing (c) played her violin yesterday, two of her strings broke. (d) has played up late the night before to 2. My paper was due yesterday, so I complete it. (a) stayed (b) stood (b) would stay (c) stay (d) am staying at the gate, and a girl was standing in its shade. (d) standing (c) was standing 4. The car wasn't here yesterday because Jane takes the bus, but the drivers were on strike. (a) uses (b) is using (c) has used 5. One of the boys (a) fall (b) falls 6. When the door bell rang, I (a) take (b) am taking 7. Mr. Brown (a) leave (b) is leaving (d) was using in the river, but I dived in and saved him. (c) were falling (d) fell a shower. (c) was taking the office only a minute ago. (c) was leaving 8. During the last earthquake books (a) fall it. She generally (b) are falling (c) had been falling (d) taking (d) left from the shelf. (d) fell Unit 4 Exercise 6: Fill in the blanks in the passage below with the correct form of the verb in parentheses. The first one is done for you. Mark (live) lives in Japan. His family (come) five years ago, when his father (start) Osaka. At that time Mark was still only 10 years old, and he (do) not want to leave America. But now, he (have) Osaka, and he likes living there. During the last summer vacation, Mark (go) United States with his parents. They (visit) Washington D.C., and Boston, and (enjoy) They also (go) Mark's grandparents. His grandparents (be) see Mark. One evening, as they (eat) the telephone (ring) Mark and his parents (talk) over one hour. Now Mark is back in Osaka. He (want) his grandparents again. He is (plan). America by himself next time. to Japan his own business in many friends in back to the New York, seeing the sights. to a small town in Connecticut to (see) very happy to a big chocolate cake, It was Mark's aunt in California. with her one after another for to (visit) to go to

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TOEIC・英語 大学生・専門学校生・社会人

自分の回答と照らし合わせて確認したいので、答えがなにになるかどなたか教えてください。 解説もあると助かります。

5 A Matter of Taste Reading Passage 042 At the age of just 22, Jamie Oliver became well known across the UK as "The Naked Chef." He called himself this not because he cooked wearing no clothes, but because he wanted to simplify food preparation so that everybody could follow his recipes. He wanted to "strip down" the idea of cooking. Since then he has had numerous TV shows, published 50 many books, and has become a household name in the UK. Today, one of the activities Jamie Oliver is best known for is his great effort to improve the school dinners that children eat every day. One day, he visited the kitchen of a typical London secondary school, and he was shocked to see how much processed junk food the kids were given to eat each day. Fat and sugar levels were extremely high, and nutritional values very 10 low. The "turkey twizzler" became the symbol of these unhealthy meals: processed meat containing 21.2% fat and only 34% actual turkey. Oliver ran the school kitchen for one year and tried to show that it was possible to serve healthy meals on a limited budget—and that kids actually enjoyed eating them. His mission was to radically change the eating habits of children in that school, and across the country. 150 200 15 20 25 CULTIES 250 His project (the "Feed Me Better" campaign) has had some influence on school dinners in the UK. After watching the documentary Jamie's School Dinners, 271,677 people signed a petition calling for healthier school meals. This led the Prime Minister to agree to spend 280 million pounds (about 37 billion yen) on school dinners, to ban some junk food from school menus, and to create a School Food Trust to provide support and advice for people preparing school meals. Research, by the way, shows that children who stop eating sugary, fatty food and instead eat Oliver's school dinners are better behaved in class, and they get higher test 300 scores, too. 350 Of course, the project has had some problems. At first, many students (and even parents) resisted the removal of the junk food they were so used to. In one famous instance, some parents were passing local takeaway food to their children through the school fence. Also, schools that followed the plan for a while were often found to gradually drift back into bad habits. After all, it is easier and cheaper to just give the kids junk food. However, Oliver's efforts represent a positive start, and with obesity becoming such a huge problem (see Unit 4), 400 it's a very necessary start.

解決済み 回答数: 1
英語 高校生

解説読んでも全然ピンとこないです。解説お願いします。全文お願いします。

英文分析 1. [only + 副詞 (句・節)〕 + 疑問文の形式の倒置形 文の形の倒置形でしたね。 本文も, not only で始まっていますから、 後ろが does it only は否定的な意味を持つ副詞で, 〔only + 副詞 (句・節)〕で始まれば後ろが疑問 provide という疑問文の形式の倒置になっています。 また、本文では [not only A but B) の熟語が使われていますが, but Bがずいぶん と後ろにありますから見落とさないようにしてください。 2. 仮定法らしき文の中に疑問文の形がでてきたらifの省略の合図 本文では S provide no substitutes までがSVOの一つの完全な文なのに、突然 should が出てきます。 そこでifの省略を予測できたかどうかがポイントです。(if S should V〕の倒置は他の倒置より難しい場合があります。というのは普通の仮定法と は違い主節には次のように様々な形を取りうるからです。 If S+should+V, + 直説法 : S will V / Scan V / S may V / SV * 「直説法」・・・あることを事実として述べるときの動詞の形。 +仮定法 : Swould / could/might V + 命令文 : V 本文では, if a mother or father should be unable to care for his or her child の if が省略されて倒置になっています。 また,主節に直説法の文が置かれていて, おまけに 助動詞が入っていませんから、難しく感じたかもしれません。 3. could/would / might は,形は過去形でも意味は現在 本文最後の箇所に突然 could が登場します。 これは 「can の弱め」として使われてい ます。 if節のない仮定法と考えてもOKです。 つまり「よい環境に無かったので結束 していなかったが、もしよりよい環境ならば、おそらく結束していただろう」という意 味です。 つまり in better circumstances が if節の代わりになっていると考えればいい わけです。 このようにif節のない仮定法はよく出てきますが、ほとんどの場合,主語 か副詞 (句)がif節の代わりになっていますので覚えておいてください。

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英語 高校生

上の説明読んでもよく分かりません。 回答と解説お願いします。

B C Q Put It into Focus A 未来を表す表現 ① <will+動詞の原形>: 「未来の予測」や「主語の意志」を表す。 I will be 18 years old next month. 私は来月18歳になる。 未来の予測] I'll call you tonight. 今夜電話するよ。 [主語の意志] ② <be going to+動詞の原形〉 根拠を伴う「未来の予測」や前から決めていた 「主語の意志」を表す。 I must go now. I'm going to be late for school. もう行かないといけない。 学校に遅れてしまう。 「未来の予測 I'm going to study harder this year. 今年はもっと一生懸命勉強するつもりです。 [主語の意志] ③ 現在進行形 <be動詞の現在形+現在分詞) (Unit 3): 「近い未来の予定」を表す。 I'm visiting Kobe tomorrow. 明日神戸を訪れます。 時や条件を表す節の中では, 未来のことでも現在時制で表す。 Give her this memo when she comes. 彼女が来たらこのメモを渡してください。 Work It Out Choose the correct words or phrases to match the situations. 1. 〈状況〉 必ず時間通りに行くと約束します。 I promise that I (will / am going to) be there on time. 2. 〈状況〉 誘いに乗れない理由を述べます。 I can't go with you because I (will / am going to) go fishing this Saturday. 3. 〈状況〉 ジョージの来週の予定について話します。 George (visits / is visiting) Wellington next week for his sister's wedding. 「未来の予測」 は100% そうなることも含む。 Arrange the words in the parentheses to match the Japanese. 1. 週末には何をする予定ですか。 (you/do/what/going/are/to) over the weekend? 4. 〈状況〉 ハイキングを中止にする場合の対応を伝えます。 If we (will cancel / are going to cancel/ cancel) our plans to go hiking, we (will send/ send) you an email. 2. 彼女も私たちと一緒にハイキングに行くと思いますか。 ( you / she / will /think/do/go) hiking with us? Unit 4 Does she like me? No way! over the weekend? Complete the dialogue below using the words in the brackets. Mark: (1) anything tomorrow, Haruto? [you, dol Haruto: No, why? Mark: Well, Little Women is playing. I want to see it, but I don't want to go alone. Haruto: OK, (2) with you. [I, go] What time shall we meet? Mark: (3) Haruto: Fine. (4) you at about 10:30 outside the theater, OK? [I, meet] Sara later today. [I, see] Shall I ask her to come, too? you tomorrow then. [I, see] Bye. Mark: Yes, of course. (5) hiking with us? 29

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