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物理 高校生

(2)でB地点の力学的エネルギーは運動エネルギーだけの力ということですか?弾性力による位置エネルギーは働いていないのですか? よろしくお願いします🙏

M+m 基本例題 24 保存力以外の力の仕事 ト105 点Aを境に左側がなめらかで右側があ らい水平面がある。点Aより左側のなめ らかな水平面上で,ばね定数 100N/m の ばねの一端を固定し,他端に質量 1.0kg の物体を置く。ばねを 0.70mだけ縮めて手をはなすと, 物体はばねが自然の長さ になった位置でばねから離れた。重力加速度の大きさを9.8m/s°とする。 (1)物体がばねから離れるときの速さひは何 m/s か。 物体はばねから離れた後右に進み,点Aを通過して点Bで停止した。 (2) 物体とあらい面との間の動摩擦係数が0.50 のとき, AB間の距離Zは何mか。 -0.70m- Poo00 B 一自然の長さ一 あらい水平面 指針(1) 弾性力(保存力)による運動では力学的エネルギーは保存される。 (2) 力学的エネルギーの変化=D動摩擦力がした仕事(W=-Fx) 解答(1) 最初に物体のもつ弾性力カによる位置エ ゆえに ひ=V100×0.70°=7.0m/s (2)動摩擦力が物体にした仕事は W=-0.50×1.0×9.8×7=-4.9Z[J] 物体の力学的エネルギーの変化=Dw より ネルギーは ひ=+×100×0.70°J ばねから離れた後に物体のもつ運動エ 1 ネルギーは K=→×1.0× 2 ぴ] ラ×1.0×0°--×1.0×7.0°=-4.9z 力学的エネルギー保存則より ゆえに 1=。 2×4.9 7.0° -=5.0m 0+-×100×0.70°= × 2

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英語 高校生

問3について ④みたいな選択肢のとき、ついついwhenを 「~とき」と訳してしまいます。 模範解答は「いつ、他者のそばに立つべきか」と書いてあったのですが、なぜこのときはwhenを「いつ、~」と訳してるんですか?どういうときに「いつ」と訳せばいいんでしょうか? あと、「~... 続きを読む

第6問(配点 24) A findings to your classmates. social positions. Personal Space and Culture Hall also told an interesting story illustrating cultural influenee, He was Sitting alone on a chair in the lobby of a hotel when an unfamiliar Arabian man came within arm's length) The man looked as if he was waiting for someone and stood in front of than an Asian person. strangers. him. Due to his personal space being violated, he felt very uncomfortable and tried to show his discomfort, but the Arab did not seem to notice at all) Hall had no idea why the man was standing so close, thinking that even in a public place like a hotel lobby, someone's personal space should be respected by others. Afterward, when he 0 taik with your friends even when thev are closer than this distance. However, you met his Arab friend, Hall asked why the man had acted so rudely. His friend said, “That's just an American idea. Arabs believe that personal space does not exist for anyone in a public place like a hotel lobby." Furthermore, a distance of less than 1.5 feet (46cm) from you is called *“intimate In a globalized society, knowledge of cultural influence on interpersonal distance aistance." Since physical contact with others is likely to occur within this distance, is necessary in daily life/ People from different cultural backgrounds have a personal only those who have a very close relationship with you are allowed to come nearer space of a different size, and it is very likely that you will mistakenly violate their than that. By contrast, when you step into a stranger's space formed by intimate personal space. This may sometimes cause(serious trouble, Therefore, understanding distance, they may feel that you are trying to frighten them or physically attack them. the sense of interpersonal distances in other cultures will help avoid conflict with Hall classifies “personal distance” and “intimate distance” as someone's personal others. space. The space outside of your personal space can also be divided into two types, depending on the distance./ A distance of between 4 feet (1.2m) and 12 feet (3.7m) from you is called “social distance," and a distance of more than 12 feet away from you is called"distance." in non-situations, in business or parties, place at a social . On the other hand, a public distance is a public speech. You also to keep this distance when meeting people in important The point here is that , , the same for all , but are by your or, , by the culture you belong to. , that people in South , in , space than people in Asia, a South will allow a to get closer 3- 31 3- 30

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英語 高校生

1枚目右ページの2行目、a patexted technology involving bacteria cleans the water, はinvolving bacteriaがa patented technologyを現在分詞の形で修飾していて、cleansが文の... 続きを読む

They are part of an experiment that Sogo, chief operating officer at FRD Japan, hopes will one day allow cost-effective inland farming of salmon Tokyo, gray salmon in a tank make quick movements, fighting for food. sea, but businessman Tetsuro Sogo is looking inland to raise one of the country's most loved sushi fish: salmon.\ In a mountainous area near Japan may be an island nation surrounded by the richness of the A You are preparing for agroup presentation on fish farming for your elan thought we needed a new way to produce more salmon," he explained. The company's process has two stages. First, tap water is converted 58 第2回 実戦問題 59 第6問 (配点 24) a シフト You have found the article below. 文字サイズ マトリー ジャンプ salmon farming. and enable Japanese to buy the homegrown fish for their sushi. “"We'll able to easily get high quality salmon wherever we are,” Sogo said The majority of the salmon consumed worldwide is farmed, not wila technology exports)." and the aquaculture market is dominated by Norway, which produces 1.3 million tonsa year. Farming at sea, the most common way to raise the fish, is complicated. The sea must be the right temperature, colder than 20 degrees Celsius, and only areas without strong waves and currents are tons of sushi-ready salmon. suitable - normally inlets or bays. Inland farming of salmon is often an impractical, expensive venture requiring lots of water and electricity to keep tanks clean. That hasn't stopped demand from exploding since the 1980s, with the United States, Russia, Europe, and Japan all fussing about the fish's rich pink flesh, according to the World Wildlife Fund. “Supply is not catching up with the growing demand," said Sogo, speaking at his test focility in Saitama, 50 km (31 miles) from the sea. Dressed in a suit like 35 明1 According to the article, what is NOT true about samon farmine? 0 Itis not easy to make profit by inland farming. の More than halfof the salmon consumed in the world comes from farming. Norway is leading the world market. a typical “salaryman" corefully monitors the fish as though he is wWatching his own children ““We - except fora pair of white rubber bonts _ Sogo O Strong waves are necessary to keep the water clean. 「第2回

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