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物理 高校生

Ⅱの(4)をsin cos関数を使って解いたのですが答えが合いませんでした。どこが間違っているのかと正しい解法を教えて頂きたいです。お手数お掛けしますが宜しくお願い致します。

1/25 4/29 pooooooo 33 単振動 ばね定数のばねを鉛直に立て,上端に質量 M の板を取り付け、静止させる。そして,質量mの 小球をこの板の上方んの高さから静かに落下させ る。 重力加速度をg とする。 I. 物体が板と弾性衝突をする場合について (1) 衝突により小球がはね上がるためには,m とMの間にどのような関係が必要か。 33 単振動 99 mmmmm M (2) 衝突後,板ははじめの位置より最大どれだけ下がるか。衝突は 1度だけとする。 II. 小球が粘土のようなもので,衝突後, 板と一体となって運動する 場合について, (3)衝突の際,失われる力学的エネルギーはどれだけか。 (4) 板ははじめの位置より最大どれだけ下がるか。 (東工大) Level (1) (2),(3)★ (4) ★★ Point & Hint TS (1) (3) とくに断りがなければ, 衝突は瞬間的なものと考える。 その場合、重力の 力積は無視でき, 衝突の直前, 直後に対して運動量保存則を用いてよい。 弾性衝 突では全運動エネルギーが保存されるが, 反発係数 (はね返り係数) e=1 として 扱ったほうが計算しやすい。 (2), (4) ばね振り子のエネルギー保存則には,次の2通りの方法がある。 A: 1/12mu2+1/21kx2=定 (xは振動中心からの距離) 単振動の位置エネルギー B: 1/12mo+mgh+1/21kx定(xは自然長からの距離) 弾性エネルギー 12/23kx2 のもつ意味の違いと、xの測り方の違いを押さえておくこと。多くの場 合, A方式の方が計算しやすいが,(4)では注意が必要。

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英語 高校生

この解答であっているのかそしてなぜほかの答えではだめなのか教えて頂きたいです。

Part 5 Daily Life Incomplete Sentences Select the best answer to complete the sentence. Then choose the letter (A), (B), (C), or (D). 1. All participants have to arrive ten minutes before ------- scheduled appointments. (A) they (B) their (C) them (D) themselves 2. At the book reading workshop, authors read books ------- to children. Text Completion Select the best answer to complete the text. Then choose the letter (A), (B), (C), or (D). Questions 9-12 refer to the following notice. Security Notice by Artist Request The use of cellphones, cameras, smart watches or recording devices will not be permitted during tonight's performance. Guests are encouraged to leave these items in their home or vehicle to entry. Failure to comply with this ------ your 11. 9. policy will result in ---- from the venue without a refund. We greatly. 10. (A) fully (B) aloud 3. We are pleased to (A) welcoming (C) noisy (D) over ------- a new exchange student from Canada. (B) welcome (C) welcomed (D) welcomes 4. Use this robot vacuum cleaner after reading the ------- carefully.A.2 (A) systems 5. The order can -------- (A) ships (B) policies anywhere in the world. (B) to ship (C) applications (C) be shipping (D) be shipped 6. Steven began a bakery more than 20 years ------- (A) last (B) ago (C) past cooperation in creating a phone-free viewing experience. ------ 12. Thank you for your understanding. Central Theater directions A 9. (A) once (B) when (C) advance (D) prior (D) before 10. (A) remove 11. (A) anticipate (B) removing (C) removal (D) removed (B) acknowledge (C) acquire (D) appreciate 12. (A (D) automate Further details about this policy can be found on our website. (B) Come celebrate our 25th anniversary this Saturday from 5:00 P.M. (C) For information on group rates and private events, check online. (D) Check for details to see if you qualify for exclusion to this rule. 7. The air conditioner we bought was designed to turn off -------. (A) automatic (B) automatically (C) automated 8. The Momo Store also has small items you can ------- as souvenirs. (A) replace (B) borrow purchase (D) sell

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数学 高校生

(i)と(iii)の問題についてです。 二枚目の写真の答え方でもいいですか?

72 第2章 関数と関数のグラフ 練習問題 5 2次関数 y=x2-6x+10 のグラフを次のように移動させてできるグラ フの方程式を求めよ. (i) x軸に関して対称移動 (i) y 軸に関して対称移動 (Ⅲ) 原点に関して対称移動 S 精講 対称移動についても平行移動と同様、頂点に注目するのがポイント です.ただし,対称移動の場合はグラフの上下が反転する場合があ ります.上下が反転するときはの係数の符号が反転することになります。 解答 =g 平方完成すると (y軸対称 y=(x-3)2+1 なので,頂点の座標は (3,1) である. 元の (i) x軸に関して対称移動すると,頂点は (3-1)に移り,グラフの上下が反転す (-3, 1) (-3,-1) 0 (3,1) グラフ (3, -1) X 求めるグラフの方程式は, y=(x-3)-1 (=u2+6-10) り長いび 原点対称った るので㎡の係数は -1 となる。よっては (x軸対称) (y軸に関して対称移動すると, 頂点は (-3,1) に移り、グラフの形状は 変化しないのでの係数は1となる.よって, 求めるグラフの方程式は, y=(x+3)'+1 (=x2+6x+10) (原点に関して対称移動すると,頂点は(-3,-1)に移り、グラフの上下 が反転するのでの係数は-1となる. よって、求めるグラフの方程式は、 y=(x+3)-1 (=-x²-6x-10) コメント 対称移動においても,平行移動と同じように一般的な法則があります。 対称移動の一般則 x 軸に関して対称移動

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TOEIC・英語 大学生・専門学校生・社会人

青くしてある文の文構造と訳し方を教えていただきたいです🙇‍♀️ また、mainstream America の語順に違和感を感じていて、(American mainstream とした方が正しくない?と思ってしまいます、、)それも解説いただきたいです。

Neil Hello. This is 6 Minute English from BBC Learning English. I'm Neil. Georgie And I'm Georgie. Neil If I told you I'd been for a walk to see Big Ben and Buckingham Palace, you'd know straight away I was in London. Georgie But what if my walk went past cafes selling mozzarella and ricotta where I smelled freshly made cannolis and focaccia... Where would I be then? Neil Focaccia and mozzarella... you'd be in Italy, right? Georgie Yes, Italy, or 'Little Italy' to be exact - the neighbourhood in some cities where Italian communities settled and made their home. Neil These Italian arrivals opened shops and cafes selling food to their own communities. Soon dishes like spaghetti and meatballs attracted the attention of local people, and gradually Italian food became famous around the world. In this programme, we'll be taking a walk through two Little Italys, one in Argentina, the other in New York, and, as usual, we'll be learning some useful new vocabulary as well. But before that, I have a question for you, Georgie. According to a recent YouGov poll, which Italian food is most popular with British diners? Is it: a) pizza? b) lasagne? or c) garlic bread? Georgie I think it must be pizza. Neil Okay, Georgie, I'll reveal the answer at the end of the programme. One country Italians moved to was Argentina. In 1898, Giuseppe Banchero arrived in the neighbourhood of La Boca, the Little Italy of Buenos Aires, where many Italian immigrants started restaurants. Here, Hugo Banchero, grandson of Giuseppe, tells his story to Veronica Smink, reporter for BBC World Service programme, The Food Chain: Hugo Banchero Well, my grandfather came from Italy, from Genoa, from Liguria. He was born in the centre of Genoa and arrived here in 1898 at the age of seven and a half, and this pizzeria where we are was founded on March 28, 1972. We have been here for 91 years. Veronica Smink So what culinary traditions did they bring with them? Hugo Banchero Well, our culinary tradition is pizza, and we incorporated the faina from Genoa, which is a pizza with chickpea flour... Georgie In 1898, Giuseppe founded his pizzeria - a restaurant selling pizza. When a business is founded, it's established someone starts it, or sets it up. Neil Giuseppe brought the culinary traditions from his home in Liguria in northern Italy, including regional pizzas like faina and fugazzetta. The adjective culinary describes anything connected with cooking. Georgie But probably the best-known Little Italy in the world is an area of Manhattan's Lower East side in New York. Ninety percent of Italian immigrants who arrived in the US at the turn of the century came through this neighbourhood. Neil De Palos, one of the original shops selling Italian food in Little Italy, has been serving customers for 113 years. Here, Lou De Palo, co-owner and great-grandson of the original owner, Salvino, explains more about his family history to BBC World Service programme, The Food Chain: Lou De Palo 1925... when my grandmother, Concetta, and my grandfather, Luigi, got married, they open their own shop... it's the shop we continue today being the fourth generation working alongside my sister, Maria, my brother, Sal, and our children, the fifth generation. Our business has expanded; expanded to present the full food culture of the 20 regions of Italy. Little Italy is the stepping stone of the Italian immigrant. This is where many of the Italians first came through Ellis Island, and then settled here, and then eventually moved into mainstream America throughout the rest of the country. Georgie Lou De Palo is the fourth generation of his family to run the shop, and his children will be the fifth. Phrases like fourth or fifth generation describe the children of people whose parents immigrated to a particular country.

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