中3のエネルギー分野です (3)と(4)の解き方を教えてください。

7. 右の図において、 ABBC EFGHは水平な面であり、 FGは鉛直な 面です。 A点とB点の距離は1mで、 A点に静止していた2.0Nの小球に 水平方向にA点からB点の向きに1.0Nの力で小球がB点にくるまで押 し、それ以降は力を加えませんでした。 次の問いに答えなさい。 ただ し、摩擦や空気抵抗は考えないものとします。 A B C 1m E F D hm (1) AB間で小球に与えたエネルギーは何ですか。 b a (2) 小球がA点からD点ま 速 d 速 さA D で運動するときの速さ C さ ・D B C B BC の変化をグラフに表し C B D A 0 0 0 たものはどれですか。 0 時間 時間 時間 時間 1.2m H BC D 時間 次のae から適切なものを1つ選び、 記号で答えなさい。 (3) 小球がEF面まで上がるのは、 A~C面とEF面との高さの差 h が何mより小さいときですか。 (4) A~C面とEF面との高さの差 h が0.3mのとき、 EF面を通過している小球の運動エネルギーは何になりますか。 (5)(4)のとき、 EF面の端のF点から飛び出した小球は、0.6秒後にG点から1.2m離れたH点に落下しました。 EF面 を通過しているときの速さは何m/秒ですか。

教えてください

A. Complete the paragraph with words from the box. One word is used twice. beat energy range seems steady Much of the research done on music and exercise focuses on what the ideal BPM is for running. But it also 2 studies that having a predictable, 3 music with sudden changes in the 4- from recent rhythm is important. Generally, like free-form jazz, is less suitable. Why? If the music speed changes while we run, we tend to adjust our movements to match the 5 Each time we change our steps to move faster or slower, we lose 6

なぜここはtouching なのか教えてください🙇

21:17 6月5日 (水) CINDERELLA 26% 4 E< When all these things had been done, the kind godmother touching her with her wand, changed her wo... peeped into the mouse-trap, where she found six mice. She tapped them lightly with her wand, and each mouse became a fine horse. The rat-trap contained two large rats; one of these she turned into a coachman, and the other into a postilion. The old lady then told Cinderella to go into the garden and seek for half-a-dozen lizards. These she changed into six footmen, dressed in the gayest livery. When all these things had been done, the kind godmother touching her with her wand, changed her worn-out clothes into a beautiful ball-dress embroidered with pearls and silver. She then gave her a pair of glass slippers, that is, they were woven of the most delicate spun-glass, fine as すべてが終わると、 親切なゴッドマザーが杖で娘に触れ、ボロボロの服を真珠と銀 で刺繍された美しい舞踏会のドレスに着替えた。

このwhere には何の働きがあるのか教えていただきたいです

21:08 6月5日 (水) CINDERELLA Afterwards, the old lady peeped into the mouse-trap, where she found six mice. 22% 4 EX "Cinderella," said the Fairy, "I am your godmother, and for the sake of your dear mamma I am come to cheer you up, so dry your tears; you shall go to the grand ball to-night, but you must do just as I bid you. Go into the garden and bring me a pumpkin." Cinderella brought the finest that was there. Her godmother scooped it out very quickly, and then struck it with her wand, upon which it was changed into a beautiful coach. Afterwards, the old lady peeped into the mouse-trap, where she found six mice. She tapped them lightly with her wand, and each mouse became a fine horse. The rat-trap contained two large rats; one of these she turned into a coachman, and the ther in ilian The old la the Cinderella to an into the その後、老婦人はネズミ捕り器を覗き込み、6匹のネズミを見つけた。

upon 以降の文構造がよくわからないので教えていただきたいです🙇

21:05 6月5日 (水) CINDERELLA 今21% E Her godmother scooped it out very quickly, and then struck it with her wand, upon which it was change... "Cinderella," said the Fairy, "I am your godmother, and for the sake of your dear mamma I am come to cheer you up, so dry your tears; you shall go to the grand ball to-night, but you must do just as I bid you. Go into the garden and bring me a pumpkin." Cinderella brought the finest that was there. Her godmother scooped it out very quickly, and then struck it with her wand, upon which it was changed into a beautiful coach. Afterwards, the old lady peeped into the mouse-trap, where she found six mice. She tapped them lightly with her wand, and each mouse became a fine horse. The rat-trap contained two large rats; one of these she turned into a coachman, and the ther int enetilian The old lady than told Cinderelle to an into the 彼女のゴッドマザーはすばやくそれをすくい取り、 それから杖でたたいて、美しい コーチに変えた。

この解説の(2)(3)がよく分からないので教えて欲しいです！

144 第6章 微分法と積分法 基礎問 90 共通接線 5/5 2つの曲線 C: y=x3, D:y=x2+pr+g がある (1) C上の点P(a, d3) における接線を求めよ (2) 曲線DはPを通り,DのPにおける接線はと一致する。こ のとき,p,q をαで表せ) 小 (3) (2)のとき, D軸に接するようなαの値を求めよ。 (2)2つの曲線 C,Dが共通の接線をもっているということです が,共通接線には次の2つの形があります 精講 (I型) (Ⅱ型) y=f(x)=g(x)y=f(x) y=g(z) Qi P アイは一致するので, 3d²=2a+p, -20°=q-a 1, p=3a²-2a, q=-2a+a² y = ( x + 2² )² + q = b² だから, 曲線 (3) D:y=(x+ 4 Dがx軸に接するとき,頂点のy座標は 0 . -=0 4 4q-p²=0 よって, 4(-2a3+α2)-(3a2-2a)=0 4a²(−2a+1)-α(3a-2)2=0 a^{-8a+4-(9a2-12a+4)}=0 a³(9a-4)=0 <x²+px+q=0 の 145 (判別式) =0 でもよい 展開しないで共通因数 でくくる 4 .. a=0, 9 注 a=0が答の1つになること は,図をかけば軸が共通接線 であることから予想がつきます. 20 YA C 10 (2)はポイントを使うと次のようになります。 a α 違いは、接点が一致しているか, 一致していないかで,この問題は接点がP で一致しているので(I型)になります。 小 入 どちらの型も、接線をそれぞれ求めて傾きとy切片がともに一致すると考え れば答をだせますが, (I型)についてはポイントの公式を覚えておいた方が よいでしょう. 解答は,この公式を知らないという前提で作ってあります. 解答 (1)y=xより,y'=3m² だから,P(a, α) における接線は, y-a³=3a²(x-a) :.l:y=3ax-2α° ......ア C (2)PはD上にあるので,a+pa+g=a ...... ① PEDESTA 86 また,y=x+px+α より y'=2x+pだから,ませ Pにおける接線は,y-a=(a+b)(x-a) :.l:y=(2a+p)x+α-202-pa y=(2a+p)x+q-a² ......(*) y-f(t) f(x)=x, g(x)=x+px+g とおくと f'(x)=3x2, g'(x)=2x+p [ a³=a²+pa+q 13a2=2a+p p=3a2-2a よって, g= -2a3+α2 ポイント 2つの曲線 y=f(x) と y=g(x) 共有し, その点における接線が一致する f(t)=g(t) かつ f'(t)=g'(t) 点 (t, f(t)) を 演習問題 90 第6章 関数 f(x)=x^2とg(x)=-x+αのグラフが点Pを共有 し、点Pにおける接線が一致する。このとき,aの値とPの座標を 求めよ. Inn Hml

73番の問題は力学的エネルギー保存則では解けないのですか？なぜ解けないのか教えて欲しいです。運動量保存則との使い分け方も教えてください。お願いします

73* 質量 Mの粗い板が置かれている。 質量 m の物体 板 が速さv で飛んできて, 板上をすべり, やがて に対して止まった。 最後の全体の速さ”はいくらか。 mvo M

算術平均、加重平均、幾何平均、調和平均の使う例と、その平均を使う理由を教えてください…！

解説お願いします🙏🙏🙏

Or う Hm 題 5 47* 5個の数字 0 1 2 3 4 のうちの異なる3個を並べて, 3桁の整数を作る。 (1)3の倍数は何個作れるか。 0120k

英語の長文です どこに文法表現があるか知りたいです！ よろしくお願いします。

5 UNIT3 Reading Passage 10 15 20 20 25 30 Listening When important events are happening around the world, most people turn to traditional media sources, such as CNN and BBC,¹ for their news. However, during the invasion of Iraq by the United States and its allies in early 2003, a significant number of people followed the war from the point of view of an anonymous² Iraqi citizen who called himself "Salam Pax" (salam means "peace" in Arabic, and pax means "peace" in Latin). Salam Pax wrote a diary about everyday life in Baghdad during the war, and posted it on his web site. Pax's online diary was a kind of web site known as a "blog." Blogs, short for "web-logs," are online diaries usually kept by individuals, but sometimes they are written by companies and other groups of people. They are a rapidly growing type of web site on the Internet. There are estimated to be several hundred thousand blogs on the Internet, and with the popularity of other social media sites, the number of people writing online about their lives continues to grow. may find A blog differs from a traditional web site in several ways. Most importantly, it is updated much more regularly. Many blogs are updated every day, and some are updated several times a day. Also, most blogs use special software or web sites which are specifically aimed at bloggers, so you do not need to be a computer expert to create your own blog. This means that ordinary people who computers difficult to use can easily set up and start writing their own blog. In 2003, the Internet company AOL³ introduced their own blogging service, enabling its 35 million members to quickly and easily start blogging. There are many different kinds of blogs. The most popular type is an online diary of links, where the blog writer surfs the Internet and then posts links to sites or news articles that they find interesting, with a few comments about each one. Other types are personal diaries, where the writer talks about their life and feelings. Sometimes these blogs can be very personal. There is another kind of blogging, called "moblogging," short for "mobile blogging." Mobloggers use cell phones to take photo's, which are posted instantly to the Internet. When the content and images posted online involve news subjects, mobloggers become citizen journalists. In fact, the Korean web site OhMyNews was a well known source for articles from international citizen journalists. However, in 2010, OhMyNews stopped posting new articles. Instead, it is now a blog site where citizen journalists can choose what makes the headlines, or just share ideas about how regular people are changing the news world. Anyone who visits the web site of a big media company can clearly see how the idea of blogging has changed the reporting of news. Quite often, a list of reader comments follow news articles. It seems that the news is becoming less like a report or a lecture, and more like a conversation, where anyone can join in. CNN, BBC Cable News Network, British Broadcasting Corporation anonymous not named; unknown 3 AOL America Online