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物理 高校生

下の写真のマーカーのところがなぜそうなるのかが分かりません

2 気体分子の運動 気体の圧力や温度を変えたとき,気体分子の熱運動はどのように変化しているのだ ろうか。この節では,気体全体の状態と、分子の運動との関係について理解しよう。 A 分子運動と圧力 気体の圧力は気体全体の状態を示す巨視的な量である。 その巨視的な 量が,それぞれの気体分子の質量や速度などの微視的な量とどのような 関係になっているのかを考えてみよう。 1辺の長さL〔m〕,体積V[m²](=L°)の立方体の容器に,質量 m[kg] の分子N個からなる理想気体を入れる。図16ⓐ のように x,y,z軸を とり,x軸に垂直な壁Sが受ける圧力を考える。 分子は,他の分子とは 衝突せず, 容器の壁に衝突するまでは等速直線運動をしていると仮定す る。また,分子と壁との衝突は弾性衝突とし,衝突の前後で分子の速度 RI) →p.151 の大きさは変わらないとする。 2 ①1回の衝突で壁Sが分子から受ける力積 壁Sに衝突する直前の分 子の速度をv = (vx, vy, vz) とする (同図⑥)。 衝突前後では分子の速度 の大きさは変わらず,壁Sに垂直な成分のみ向きが変わるので,衝突 直後の分子の速度はv=Ux, vy, vz) となる。 よって, 壁Sとの衝突 による分子の運動量の変化,すなわち, 分子が壁Sから受ける力積は mu-mv=(-2mvx, 0, 0) → p.143 (98) 式 となる (同図⑤)。 作用反作用の法則より, 壁S は分子から反対向きの力積を受けるので,その 大きさは2mvx[N・s] で, 壁と垂直な向き(x軸の正の向き)である。 (14) Op.143 mv - mv = Ft (98) 5 10 15 20

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英語 高校生

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

解決済み 回答数: 1
英語 高校生

Q&Aを教えてください! よろしくお願いします(*・ω・)*_ _)ペコリ

ection 1 Setting What does Takita do in Kenya? サイの治療のようす I'm Takita Asuka, a veterinarian in Kenya. I have been working to protect African wildlife, especially elephants. In Africa, over 20,000 elephants are killed by illegal hunters every year. They want the elephants' African elephants have been in danger of G 5 ivory. extinction for many years. To take care of animals, my colleagues and I often drive on rough roads for more than 200 kilometers a day. Sometimes I even fly a light plane to look for o injured animals. I also work with rangers to protect animals from illegal hunters. I have been living in a tent in the savanna for more than ten years. People often ask me, “Aren't you scared to live near wild animals?" In fact, I sometimes hear - lions roar near my tent at night, but I'm used to it. & Takita Asuka 滝田明日香さんが、 生徒たちに講 ©Asuka Takita サバンナの上空を飛ぶ滝田さん 3 20,000 twenty thousand 9 look for ~ ~ を探す SY-TAE 4 illegal hunter # 13 be scared to 〜 〜するの journey Ide 5 be in danger veterinarian [vétərənérian African la wildlife (wal illegal ilig ©Asuka Takita colleague(s) [káli:g(z)] rough (ri kilometer(s) [kilá:mətər(z) ranger(s) [réindzər(z)] savanna (sava 1. Do illegal hunters kill elephants to get their ivory? 2. How far a day does Takita often drive to take care of animals? 3. What does she sometimes hear at night? roar [ro:] Yes, I do TFO 1 OXO 2 13 BER S Rea 滝 仁 F C

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英語 高校生

3の②が分からないので教えてくださいm(_ _)m

[ア ] the spring vacation, I went to Italy with my family and I visited the island of Burano by A ( oneself). It took 40 minutes to get to the island by water-bus from Venice. The sea breeze was salty but cool! When Ⅰ arrived, I was surprised because the houses were so colorful. ② They were very different [ イ ] ③those in my country, Japan. Ⅰ ® (think) to myself, "④This scenery is just what I wanted to see!" Afterⓢ (have) lunch, I went to a souvenir shop. Outside, a woman was D (make) lace. Burano is famous [ ウ Jits beautiful lace products. Ⅰ asked the woman about the island's colorful houses. She said, "We have thick fog in winter, so ⓢsometimes the fishermen have trouble finding their houses from offshore. Because [ I ] the vivid colors, ⑥they can return home safely." I really enjoyed my time on Burano. た。 彼の報告を読み、 後の問いに答えなさい。 (37) 問1 A A C 2 [ア ア ウ 3① の語を適切な形に変えなさい。 (4) myself (D ]~[ I ]に入る前置詞を下の durina of / during / at ⑥ について、 答えなさい。 (9) B I / for ④を日本語にしなさい。 ② thought (前半) から選び、 書きなさい。 (4) from 1 ①を日本語にしなさい。 ② ベネチアから水上バスで島に着くのに40分かかりました。 ②の代名詞が指しているものを日本語で答えなさい。 ① from ③ を those の指している語を明らかにして日本語にしなさい。 ① 第1回 (1/5 )

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