100gのボールが右に5m/sで動いていて、もうひとつの動いてない物体にぶつかります。 ぶつかった間に働く力(F)はF=√2・k・Fmax・t－k^2・t^2で求められます。(画像にものってます。)Fmaxは10Nで、kは500N/sです。 画像に乗っているグラフは何秒間... 続きを読む

A 100-gram steel marble traveling at 5 m/s [Right] collides with a target sphere at rest. The magnitude of the force between the marble and the sphere is given by F = √2kFt-k²² where Fmax = 10.0 N and the constant k = 500 N/s. The force is graphed vs. time at right. The curve forms a semicircle. 83) The collision begins at time t = 0 when the force between the marble on the sphere increases from zero. The collision ends when the force decreases to zero again. How long does the collision last? 841 The impulse ims At = 0.04 s F Fmax

この問題の答えが8.01kNになる解法を教えていただきたいです。

108 Chapter 3: Fluid Statics 3.54 The steel pipe and steel chamber shown in the figure together weigh 2670 N. What force will have to be exerted on the chamber by all the bolts to hold it in place? The dimensionl is equal to 0.75 m. Note: There is no bottom on the chamber-only a flange bolted to the floor. ←d = 1/4€ Steel pipe Liquid (SG 1.2) 4t Steel chamber D=l→ A Problem 3.54

英語の長文です。 文法表現のあるところが知りたいです。 よろしくお願いします。

UNIT 1 5 Reading Passage 10 15 20 20 25 Listening There are more than 37,000 known species of spiders in the world in a wide variety of shape's and sizes! The largest spiders in the world live in the rain forests of South America and are known by the people who live there as the "bird-eating spiders." These spiders can grow up to 28 centimeters in length- about the size of a dinner plate, and, as their name suggests, have been known to eat small birds. In comparison, the smallest species of spider in the world is native to Western Samoa. These tiny spiders are less than half a millimeter long — about the size of a period on this page and live in plants that grow on mountain rocks. - Some people like to keep spiders as pets, particularly tarantulas, which are native to North America and can live for up to twenty-five years, Most people, on the other hand, do not like touching spiders, and a significant number of people are afraid of them, mainly because of their poison. However, despite their bad reputation, only thirty of the 37,000 known species of spiders are deadly to humans. Spiders actually provide benefits to humans, by catching and eating harmful insects such as flies and mosquitoes. - - The main thing that makes spiders different from other animals is that they spin web's to catch the small insects they feed on. The unique silk of a spider's web is produced by special organs found spider web is five times in the lower part of the spider's body. It is light, elastic, and strong stronger than steel. Additionally, it is completely biodegradable. This means that the web will making it perfect for uses completely decompose¹ and eventually return to nature over time such as making fishing nets. Some people have tried to raise spiders commercially in order to collect the silk these spiders produce, but no one has ever really managed to make a go of it. One reason why these businesses never stand a chance is because it takes 670,000 spiders to produce half a kilogram of silk, and all of these spiders need living insects for their food. In addition, spiders are usually solitary² animals, and need to be kept alone. Researchers at an American company working together with two U.S. universities may have found a solution to making artificial spider web. Using genetically modified silkworms,³ the company hopes that in the long run it will be able to make large quantities of very light, very strong fiber for medical as well as other uses. Additionally, because the manufacture of the artificial web is from living silkworms, the industry potentially would be non-polluting and less harmful to the environment

この英語長文において、印刷技術の発達に必要な技術はどのようなものであるか50~200字で答えてください

木版画 鋳造 第3問 以下の文は、 S. Strandh の “Machines, an illustrated history" からの抜粋で ある。 次の文を読んで、設問に解答せよ。 (ア) The tools of precision mechanics were, without doubt, the technical pre conditions for making wood cuts and for the development of printing. The oldest dated wood engraving is from 1418. It shows fine lines throughout 細部 and a richness of detal, which imply that the tools used, the knives, burins, and so on, must have been eminently suitable At this time, it was only the precision mechanics of clock making which could achieve the technique required for such tools. 精密機械技術 (イ) A (woodcut was produced by transferring a drawing, reversed from left to right, onto a carefully surface-ground "block" of wood, after which the surface wood on either side of each line in the drawing was cut away with a burin of forged steel. The remaining wood on all 'surfaces which were to be white in the drawing were then cut away with gravers and gouges, so that the lines of the drawing became raised. They were then inked and pressed against paper. これは 理由では ないから、 (~のときに、何 が原因か は不明) The woodcut method spread rapidly in the late Middle Ages when pictures were rarity. At first, skilful craftsmen made the woodcuts, but before long, eminent artists were themselves cutting their own drawings in wood. One of the first was the German Albrecht Duerer (1479-1528) who, in 1498, published the famous pictorial series of the Revelation of St. John. Graphics had become an independent art form-based on the progress of precision 酒の mechanics! 可動式の The 1440s saw the first book printed with movable die-cast type. (The letter press printing method used by Johann Gutenberg (1399?-1468) was basically the same as the one used for printing woodcuts, but Gutenberg used cast, movable type instead of cut blocks. The production of dies for the type was made possible by the tools of precision mechanics, too. It does not detract from Gutenberg's contribution that printing with movable type has been practised in the Far East, or more specifically Korea, two thousand years prior to this. Several of the techniques described here, which developed so quickly during the technical revolution of the Renaissance, had had predecessors in other parts of the world. ' 金楼 にねじ を刻む 道具 ~をなら K あったもの

（3）について答えはthese new types of cementまたはnew types of cement ですがthe new types of cement でも大丈夫ですか？

6 2019年度 英語 Ordinary Portland cement-t produced by baking lime in a kiln and emits approximately one ton of carb a kiln and emits Cement production is responsible for cement. dioxide for every ton of approximately 5% of global man-made CO2 emissions, according to the World Business Council for Sustainable Development. Cement does absorb some carbon dioxide back from the atmosphere over time, One 2016 study estimated that between 1930 and 2013, the equivalent of 43% of CO2 released from lime during heating was reabsorbed by - although that percentage does not include carbon concrete products worldwide dioxide emitted by the fossil fuels burned to heat kilns, a significant contributor of says. Fennell notes. 東京医科歯科大前駅 - the most common form in concrete- CO2 emissions during production. Unfortunately, this absorption comes at a price, particularly when cement is used in structures that feature steel reinforcement bars (rebar) within concrete. vl(As) CO₂ moves through cement it changes the pH of the surroundings, Fennell says. Concrete loses its alkalinity and, when moisture and oxygen are present, causes the rebar to rust. 2) ad "Rusting steel can expand with great force to as much as nine times its original dimensions if you add up all of the layers of iron oxide," says Randolph Langenbach, an international consultant in building conservation. This expansion causes the concrete to crack, flake and crumble. Svi aft ni adosband huma Degradation is a massive concern, he argues, and problems are not limited to rusting rebar. Everything from air pockets left in the concrete mix when it's laid to salt air buffeting coastal-facing walls, or the use of beach sand in the concrete, can shorten a building's lifespan. As one specialist once put it to Langenbach: "If it ain't cracked, it aint concrete."qubong ao yas guidtyns ogde stornos 90 s of fshoqml is vatns mash *** long llopsd lust ay to Given the concerns about the environmental impact and structural longevity of concrete, why do we continue to build with it? addi Simply put, concrete is cheap, versatile, quick to erect and requires no of weight J

書き忘れていたこの2問の解答をお願いします

Q&A Choose the most appropriate statement that matches the content of the passage. ○1 Which ofthe following statements is true? 1. Many people in Britain live on narrow boats, 2. People need alicense to operate narrow boats. Modern narrow boats have engines. 5)女目 現代の Some people get frustrated with the speed of narrow boats. 3. 4. 欲キ満なる3) ○2 The main idea of this lesson is ( 1、 the importance of. narrow boats in the 18th century 2. the changing role of narrow boats. (12)火日 the reason why British people say hello to strangers 4. the uniqueness of the design of narrow boats 愛自の

この文章の和訳を誰かしていただけないでしょうか😢 英語が苦手で、、、。よろしくお願いします！

19,20 Friday, Feb. 26, 2021 O French safety officials the 写真提供:ロイターアフ。 safety official 安全局合。 on Thursday gave green light to extend the lifetime of the FESSENHEI/ 35 eDF country's oldest nuclear power plants as it seeks to boost the share of renewable 再生可能エネ ルギー mix. renewables in its power の Nuclear energy currently provides nearly 70 10 French electricity, more than in OFrance, hoping to reduce that share to 50 percent by 2035 percent of any other country. obs91 910a8 ーa target pushed back from an earlier 2025 date the help of renewables, has been holding off from building with hold off 控える、見合わ せる new reactors. 15 The French nuclear safety authority(ASN) said the country's 32 plants with 900 megawatt capacity, built mostly in the 1980s, would be allowed to operate for another nuclear safety authority 原子力安全局 decade, taking their potential lifespan to 50 initially planned 40. 20 6 They will therefore not be decommissioned before the late years from the uohee) 活導大 2020s or even late 2030s, depending on their initial launch date. 6 The safety of French nuclear plants is checked every bse 01nla8 decade. s の ASN asked state-controlled electricity provider EDF, which EDF フランス電力 the country's nuclear plants, to undertake work to safeguard the stations' security. “The main target was to limit the consequences of accident, especially any serious accident involving the manages any necessary any meltdown of a reactor," ASN's deputy director-general Julien

できれば解説付きで教えて欲しいです。 TOEICの問題です。

1. Local libraries offer reading programs for children and ESL for adults. (A) frequently (B) frequenting (C) frequent (D) frequented 2. This year's excellent has earned our production plant renowned in the Company. (A) performed (B) performable (C) performance (D) perform 3. Anyone who a new stove by CTX Ltd. this weekend receives a free fourpieces set of set of stainless -steel saucepans. (A) purchase (B) purchaser (C) purchases (D) purchasing 4. The primary concern among our manufactures is acquiring the necessary resources at a reasonable price. (A) finances (B) financed (C) financial (D) financially 5. Questions about production concerns should be to Ms. Bates. (A) direction (B) director (C) directs (D) directed 6. Last week's performance was judged to be a major even though it received no local media coverage. (A) success (B) succeed (C) successful (D) successfulness 7. Underwood Energy Services Inc. offers benefits to full-time employees, including dental insurance. (A) attraction (B) attractive (C) attract (D) attracted 8. Mr. Whatley unintentionally took Ms. Pots' timetable, thinking it was (A) him (B) himself (C) his (D) he

答えが無くて分からないので教えて欲しいです

SIMなし合 22:01 Cop 【1】次の英文を読んで, 設問 1~12に答えなさい。 なお, *印の語(句)には文末に注 がついています。 Modern examinations of working conditions in British and U.S. industry in the nineteenth and early twentieth centuries concentrate mainly on the experiences, Complaints, and overall difficulties of working-class laborers. The first complaint that a majority of industrial workers had was that their workdays* were too long. The average (ア) of hours in a shift varied from industry to industry, from place to place, and from era to era. Workers in British and American textile mills* in the early to middle 1800s generally worked twelve to fifteen hours, six days a week, ( イ) only Sundays off. Their average workweek* was seventy-eight hours. In contrast were the hours of workers who labored in American steel mills in the late 1800s. The length of their shifts was determined by the fact that the blast furnaces* they tended almost always operated twenty-four hours a day. Thus, (oit became customary* for steel mills to have two twelve-hour shifts. However, many of the steel workers labored seven days a week. (a)That gave them a workweek of sighty-four hours. Moreover, sometimes they had to work extra hours on top of this demanding schedule. (オ )the minor differences in the length of workweeks from one industry to another, the average worker put in twelve-to fourteen-hour days at least six days a week, This harsh schedule remained more ( カ) less standard well into the twentieth century. It was not until 1920 that a fifty-hour workweek was introduced in the United States. Anda forty-hour week did not become the rule in most industries until 1938. Low wages was another common complaint of industrial workers. In 1851, the average wage earned by American industrial workers in general was seven to ten dollars per week. That same year New York's Daily Tribune* reported that a worker's family of five required just over ten dollars a week just for basics such as rent, food, and fuel. Most ordinary workers could not afford many simple comforts that middle-class workers enjoyed. (o This miserable situation lasted in America for decades and improved only slowly. As late as 1912, a study found that only 15

(2)の答えがなんで(ウ)なのか分かりません。 (イ)でも成り立つようにも思えるのですが……

7【ワークブック】 Choose the best answer. (1) It is nice ア for イ of ウ to (2) I can't find my wallet. I think it ア steels イhas stolen ウ have been stolen (3) My father's room is filled ア by イ of ウ in (4) The Internet enables us ア to get イ get (5) When you go to America, do you ア have to (6) This house in this region are made ア in イ of ウ from (7) Yesterday, the train was ア crowded you to offer your seat to me. uO エ I will have stolen books. IA エ a lot of information. ウ getting I got get a visa? イ must ウ need I ought to bricks. I by and I had to wait for hours ウ injured イ delayed I satisfied