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English Senior High

英検準1級のライティングが毎回悪いです。 1回目 内容 3/4 、構成 1/4 、語い 3/4 、文法2/4 2回目 内容 1/4、構成1/4、語い3/4、文法3/4 こんな感じで毎回ライティングの点数が1番低いです。 2回で共通しているのは、構成が... Read More

Will Societies fature? with low birthrites face. Prents: Workforce, Foodshortige, Technological Innovation, Environment problem. I disagree with the idea. I have two reasons to my opinion. to get on important to First of all, it doesn't cause a foodshortage If the number of people increased, Some people who Live ChrA Parthe popularity decreased, it with bat country can't get the food enough. if food. That is Cause food problem. a Crisis in the not cause Płoblem Second of all,. it doesn't cause an environmental problem. These days, many trash is in ocean and on the ground. This kind of problem is Caused by the people decreased, the number of trash will inclined. foo Support In conducian, I think that low birth raten twon't food shortage and an enviroment a Is marraige becoming less important today than it was in the past ?! I agree with the idea. I have two reasons to support my opinion... university. ability of their studying, their much First of all, having children cost much money. It goes saying Therefore, to support their that these days many students parents must pay money. Secord of all, some women wants to live alone. (Vowadays, the number of women is who is working increasing. As a result, they can have enough money to live by themself so they don't think it is necessary to marry. increasing is is becoming less important. In conclusion, I think that their money problem and the number of people who want to be independent the problem that the marraige is

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Physics Senior High

(5)解説で「⑤式において、θ=135°にもかかわらずΔλ≒0となるのは〜」とあるのですが、なんでΔλが0に近づくとX線強度が跳ね上がるのですか? (出典:難問題の系統とその解き方)

(i) 電圧 くなり ・飛び のよう たの) 傾きこん Wo h ら, 例題 コンプトン効果 電子の質量をm, プランク定数をん, 光速をcとして、以下の設問 に答えよ。なお, (1), (2) 以外は解法も簡潔に記すこと。 [A] 1923年, コンプトンは波長入のX線を金属薄膜に照射し、散乱さ れたX線の強度の角度分布を測定した。その結果の一部を模式的 に示したのが図1であり,X線が散乱されてもとの波長より長く なっている成分のあることが観測されている。 コンプトンはこの現象を,X線を粒子と考え、この粒子すなわ 光子と静止している電子との衝突と考えて解明した。 図1(a) X線強度 (X線の散乱角80°) 入 X線波長 図 1 (b) X線強度 (X線の散乱角0=135°) M 入。 入 X線波長 図2 入射光子 (19) O- 散乱光子 (1) O 反跳電子 (0) (1) 光子のエネルギーEと運動量P を,h, c, およびX線の波長入のう ち必要なものを用いて, それぞれ表せ。 (1-cos 0) を導け。 ただし、 (2) 散乱前後の光子の波長をそれぞれ入, 入] とし, 反跳電子の速さをか とし,入射方向に対するそれぞれの散乱角を,図2のように0.④と する。このとき,入射方向とそれに垂直な方向の運動量保存則を それぞれ記し,さらに、エネルギー保存則を記せ。 h (3) 41 (=A₁-A)=- 4 « 1 として、 do mc 近似を用いること。 (4) 反跳電子の運動エネルギーの最大値T maxをm,hcおよびふを用 いて表せ。 (50=135°の図1(b) では, 波長入。 付近にもピークが見られる。波長の ピークが光子と金属中の電子との散乱によるのなら、山のピーク は光子と何との散乱と考えられるか。 理由も述べよ。 [B] 一方、電子の波動性については, 1924年ド・ブロイが予想し, 1927年デヴィッスンとジャーマーが検証した。 彼らは格子間隔dの 2-1 原子の構造 263

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English Senior High

問3教えてください😭😭😭🙇‍♀️🙇‍♀️

元子 The (1)"rare earth elements are a group of 17 metallic elements that are found in the natural 元子 world. Because these elements are used in all sorts of high-tech devices, they are increasingly 全種類 倍増した in demand. In fact, the use of these metals nearly doubled between the years 2000 and 2010. d Despite the name, the quantity of these elements is not so low. Some recent reports have 主張した claimed that the amount of rare earth elements may be on the same level as that of copper* or Even though the elements exist throughout the world, however, the quantity is not LAUOPUS OS sufficient* for mining* profitably* in each location. Moreover, these elements are usually mixed lead*. with other elements, making it difficult to remove them. This explains why they have been called (8) (A) „‚Â#881‡3 GANEUS $0 01X$&NOS "rare" earth elements. (8) jud (A) Jon Despite an ever-growing demand, few countries are mining for these metals on a large scale. bhup gnis91 sus abnsmab 19 (A) jos ei said ino NO One country, China, now handles more than 90% of all mining for rare earth metals. Other Jadi seu ingim owied 参 in di o ogsmeh, countries have not entered this business in part because of In oro guiauso juodhiw moi because of (2) the environmental problems th ANS) OW IGERS allesimonoss maci pruxs of lola su od son ob enido merla corto prinanvoo can occur. Extracting the metals creates a lot of waste, including radioactive* waste from >tojat DEROXA uranium*, thorium* and other elements located in the mining area. poswad belduob vlison and anomals die ve dost-dgid to edmund oros bas The growing need for rare earth metals may convince some countries to expand their mining. bsol 10 190900 2 von dem som vas a su amals drus ma maldong nista on jonzi blow di metavond zimnelo drusele viirusno leuns afte Running out of rare earth metals is not the concern, however. Rather, the question is whether 2 lo word of mine anomals dre His ch 21810 i asıl yainuas vino odo at smidƆ> vob dost-deid ni bozu.ad no vod! they can be obtained without too high of an economic or environmental cost. ololo alam russ

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