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理科 中学生

(4)の答えって何になりますか? 教えてください…!!!

滑車や斜面.てこを使った仕事について次のよ うな実験を行った。以下の問いに答えなさい 4 図1 図2 ものさし ばねばかり 【実験】 I 図1~図3のように,台車や滑車を10cm 引き上げたときのカの大きさや引いた距離を調 べた。その結果は下の表の通りである。 ものさし ばねばかり 滑車 糸 滑車 L 台車 30cm カの大きさ [N] 台車 |10cm 糸を引いた距離 [m] 図1 4.8 0.10 |10cmm 図2 1.6 0.30 図4 レ支柱 1 図3 2.4 0.20 図3 4 ばねばかり 糸 I 図4のように, 図1~3で用いた台車と滑車 を支柱に連結した棒で引き上げた。このとき, 台ばかりには, 下向きに2.8Nのカがはたら いていた。 I JA B 糸 滑車 棒 | イニズ28 秋2,8 台車 台ばかり レ系 ものさし 図5のように, 図4のてこと滑車を組み合わ せた装置をつくり, 糸を引いて棒を静止させた。 図5 滑車 友柱 1 4 (1)実験Iの結果から, 道具の有無による仕事の 大きさについてどのようなことが言えますか。 (2)(1)のことを何といいますか。 (3) 実験Iで, Cを引くカは何Nですか。 ただし, 棒と支柱 との摩擦や棒の質量は考えないものとする。 (4 実験Ⅲで, Cを引くカは,台車と滑車にはたらく重力の何倍になりますか。 台車 |A B IC 棒 |10cm レ条 滑車 台車 の大きさ反変出グテ 不事の原標 0.7 N 倍 4

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英語 中学生

英語分かりません(´・ω・`) かぎかっこの中の問題です。 21から最後まで

(18) Theodore's computer, ( ) his mother gave him three years (23) A: John, are you interested in going to a kabuki performance ago, stopped working last night. 1where 2 how 3 which with me next weekend? 4 whose B: I don't know, Yuko. I've never seen kabuki before, ( A: You can get an English program. Ie'll tell you about the 23 ) (19) A: Have you heard the company is going to holda party for the story. employees next month? B: Yes, but I'm ( 1 around ) the plan. I think it's a waste of money. 4 against B: That would help. In that case, Id love to go with you. 2 Where is the theater? 4 Have you been before? 2 below 3 without 1 Is it expensive? 3 Will I understand it? (20) A: Have you seen Timothy? I need to talk to him. B: He's outside, ( 1 was talking 2 talking )on his cell phone. 3 talk (24) A: Hi, Tm Peter. You must be the new employee in the company. B: Yes. My name is Jordan. I just started working in the sales department. A: I work in the marketing department, across the hallway from you. ( 24 ) B: That would be nice. I don't know many places to eat around here yet. 4 talked 次の六つの会話文を完成させるために, (21) から (28) に入るものとして最も適切 2なものを 1, 2, 3, 4の中から一つ選び,その番号を解答用紙の所定欄にマーク しなさい。 (21) A: The TV news said it's going to rain later today. B: I know, but they're often wrong. They said that yesterday would be warm, ( A: Well, it must be hard to know what the weather is going to be. B: I guess so. But it would be nice if we could know for sure. 1 We should go out to lunch sometime. 2 Let me introduce you to my boss. 3 I'll show you where my department is. 4 You can use my office if you like. 21 ) A: Billy, do you have soccer practice this afternoon? B: Yeah, Mom. And I'm going to the library to get a book after that. A: ( 25 B: Practice ends at 5:30, so I think so. A: But the library closes at five o' clock on Sundays. B: Oh, no! ( 26 ) A: Well, I can go and get it for you while you're at practice. B: Really? Thanks a lot. I'Il tell you the title before I leave. 1 because it's raining now. 2 but it was actually quite cool. 3 and I watched the weather report. 4 since it's warm today. (22) A: Have you volunteered for that experiment the science professor is doing next Friday? B: Yes, I have. He's going just one hour! A: Wow, that's a lot of money. ( 22 ) B: I'm not sure, but I could ask the professor for you. pay people $50 to help him for (25) 1 Are you finished with your homework? 2 Are you sure you'll need a book? 3 Will you play soccer there? 4 Will you have time to go there? 1 Do you think I could doit, too? 2 Aren't you nervous about it? 3 Isn't that too much money? 4 How many days will it take? (26) 1 The book is too long for me. 2 The library won't have the book. 3 Ineed the book for my report. 4I forgot the title of the book. 16

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