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理科 中学生

写真2枚目の(4)が分かりません。自分で調べてみたのですが正三角形になるからばねBには35gがかかるみたいなことがかいてありました。正三角形になるとなぜばねBには35g分がかかるのかがよく分かりません。分力でわかれるから半分の17.5gがかかるのではないのですか? 解説お願... 続きを読む

4 物体にはたらく力や仕事について調べるため, 長さ6.0cmで強さが異なるばねAとばねBを用意 し、次の 〔実験〕 を行った。 なお、質量100gの物体にはたらく重力の大きさを1.ONとする。 また, ばね及び糸の質量は無視 できるほど小さいものとする。 〔実験〕 図 1 ① 図1のように, スタンドにばねAとものさしを固定し, 10g, 20g, 30g, 40g, 50g の質量のおもりを順にばねAにつり下げて静止させ, おもりの質量とばねAの長 さとの関係を調べた。 ② 次に、図2のように, スタンドからはずしたばねAに, 質量 40gのおもりPをつけ, 水平な床の上に置いた。 ③②のばねAの上端をゆっくり上方に引き, 図3のように, おもりPの下端が床から 1.5mの高さになるまで引き上げた。 ④ ばねAのかわりに, ばねBを用いて, ① と同じことを行った。 スタンド おもりの質量 〔g〕 ばねAの長さ [cm] ばねA ばねBの長さ [cm] ・おもり ものさし 表は, 〔実験〕 の ①, ④ の結果をまとめたものである。 表 0 6.0 図2 6.0 10 7.0 6.8 20 8.0 7.6 おもり P 床 図3 30 9.0 8.4 000,0000 40 10.0 9.2 1.5m 50 11.0 10.0

解決済み 回答数: 0
英語 中学生

長文は、一度問題を見ると効率も上がると聞くのですが、この写真のように、本文の内容に合っているものを選ぶ問題は、問いを読んだ後に結局は長文全体を読むことになるのでしょうか??

5090 答率 ↓ 2% Orps 長文読解 (本文の内容と合うものを選ぶ) <千葉県改題〉 次の文章を読んで、本文の内容に合っているものを,あとのアーエのうちか ら1つ選び、その記号を書きなさい。 Karen is from America and teaches English in Japan. She likes *traditional Japanese things. Now she is interested in *furoshiki, Japanese 1701 17 ci wrapping cloths. They have a lot of colors and *patterns. There are also しっぱいさいずある 117€ many *sizes of Japanese wrapping cloths. They *can be folded small, so Karen always has a Japanese wrapping cloth with her. When she goes shopping, she uses it as a bag. So, she doesn't use any *plastic bags. At school, she often uses the wrapping cloth to carry her books to her classes. It is also used as a *scarf, a *wall hanging, and a *tablecloth. So Karen thinks it is like a "*magic cloth." * traditional () furoshiki, a Japanese wrapping cloth (33) pattern (.) size (サイズ) can be folded small (小さくたためる) plastic bag (ビニール 〔ポリ] 袋) O scarf (スカーフ) wall hanging (壁掛け) tablecloth (テーブルクロス) magic cloth (魔法の布) 7 Karen, is an American teacher who teaches the Japanese language. ときどき はこぶ Karen usually carries a lot of Japanese wrapping cloths in her bag. いつも つかってる。 y Karen always uses plastic bags in stores. I Karen uses a Japanese wrapping cloth at her school. 日本式 + +++1=UTUZ 買い物に行くは代

解決済み 回答数: 1
英語 中学生

このような英文を読むのに8分ぐらいかかってしまいます。筆記は30分しかないので、2、3分で読めるようになりたいです。 早く読めるコツを教えてください。

4 Read the passage and choose the answer which best completes each sentence (1) 1)~(4). We all know that any person has a dream while they are sleeping. We also know that it is difficult to remember dreams after we wake up. Most dreams are soon forgotten and they disappear like small bubbles in water. In addition, they often cannot be remembered at all after they are forgotten. Even if you can remember a dream soon after you wake up, perhaps you cannot remember it any more after getting out from your bed to make some coffee. Maybe you have had such an experience. Then, have you ever noticed that you were having a dream while you were sleeping? / Some people have had such an experience. It is called a lucid dream, and some scientists in the world do research on it. Actually, there are even research groups which focus on it. Why do they do research on lucid dreams? For one thing, there may be advantages for us. We will be able to avoid nightmares and make our dreams happier or more exciting if we can notice we are having dreams and we can control them like a pilot. Today, scientists do not know enough about lucid dreams and how to control them, so there are still many things to be done in the research. But it may be possible for everyone to have lucid dreams if science in the area improves more. Actually, that is one of goals that some scientists are trying to reach. According to a survey, over 75% of the respondents answered that they experienced a lucid dream at least once in their lives. Also, many reports about lucid dream experiences were given in history. We can find early reports on them in books from ancient cultures. For example, an ancient Greek doctor already tried to use lucid dreams as a kind of therapy over two thousand years ago. And controlling our dreams in our own ways was one of the important topics among early Buddhists in Asia.

解決済み 回答数: 1