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理科 中学生

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5 6 〔分] (1) 流れる向きが周期的に変化している電流を, 交流という。 家庭のコンセントに供給されている電流は, 交流である。 な お、乾電池の電流のように、一定の向きに流れる電流は,直 流という。 (2) 消費電力が1200 W の状態で使用したときは12A, 消費 電力が600W の状態で使用したときは6Aの電流が流れる。 (3) 600 〔W〕 x 30[s] = 18000[J] (1) 同じ大きさの電圧を加えたとき, 抵抗が小さいほど流れ る電流は大きくなり, 電力も大きくなる。したがって, 抵抗 が小さい電熱線Aのほうが, 電熱線Bよりも電流は多く流 れ 電力は大きい (2) 電熱線Aに流れる電流は, 6 (V) 2[Ω] は, 3 [A] × 6 [V] = 18〔W〕 となる。 これより, 5分間電流 を流したときの電熱線の発熱量は, 18 〔W〕 × 5 × 60 [s] = 5400〔J〕 (3) 電熱線Aに加える電圧を3Vにしたときに流れる電流の 大きさは1.5A なので、電力は1.5〔A〕 ×3〔V〕 = 4.5〔W〕に なる。電力の大きさが1になるので、水の上昇温度も 1/4に = 3 〔A〕 なので、電力 なる。 図3より6Vのとき、電流を5分間流すと8℃ 上昇して いるので,3Vのとき、電流を5分間流すと2℃上昇するこ とがわかる。したがって (0.0) と (52) の2点を通る直線 を引けばよい。 (4) 並列回路では、加わる電圧の大きさは一定なので水の上 昇温度は, ビーカー Ⅰ >ビーカーⅡIである。 また, 直列回路 では, 流れる電流の大きさは一定なので、電熱線Aに加わ る電圧よりも電熱線Bに加わる電圧の方が大きいため、水 の上昇温度は, ビーカーⅣ>ビーカーⅢである。 直列回路全 体の抵抗の大きさは, 4 + 2 = 6 [Ω]なので, 回路全体に流 6 (V) =1 [A] であるから, ビーカー 6 [Ω] れる電流の大きさは, Ⅳの電熱線Bの電力は4W。 ビーカーⅡIの電熱線Bに流れ 6 〔V〕 = 1.5 〔A〕 なので, 電力は9W で 4 [Ω] る電流の大きさは あるから 水の上昇温度は, ビーカーⅡI>ビーカーⅣVである ことがわかる。したがって, 水の上昇温度を大きい順に並べ ると, I > ⅡI>Ⅳ> ⅢIとなる。 図 消費電力が から1つ選び、 何Jになるか。 電熱線 B (4Ω) BAX3V A (① 電熱 熱 電熱 電熱

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英語 高校生

答えをなく困っています。 教えてください。 よろしくお願いします。

I 次の英単語で最も強く発音する部分(第一アクセント) を、 それぞれ記号で答えなさい。 1. del-i-cate アイウ Ⅱ 次の英文を読み、 設問に答えなさい。 How many hours a day do you spend on your *cell phone? Today, more and more young people are spending more and more time on smartphones and computers. According (D) a 2013 *survey carried out by the *Japanese Cabinet Office, 97.2% of high school students owned a cell phone; of these, 82.8% had a smartphone. This is a *drastic increase from 2010, when only 3.9% of those with cell phones had smartphones. The survey also shows that the spread of smartphones has led to increased access to the Internet among children, whose average access time on a weekday is 107 minutes. The Cabinet Office also found that 40% of Japanese children *log on to the Internet more than two hours a day, and that 8% spend more than five hours a day online. This has led to some serious social and *psychological problems. Heavy Internet users become *obsessed with staying online and @develop an *addiction to games, social media sites, and free communication systems such as LINE. The various *adverse effects of such addictions have been reported in most developed countries. Many young addicts suffer (2) headaches and sleep disturbances such as *insomnia. They fail to maintain normal weight *due to eating irregularities. And many are more likely to experience emotional distress, isolation, anxiety, and depression. A British study suggests a clear link between excessive Internet use (3) lower self-esteem. Those young people who spend more than four hours a day looking at a screen are particularly *vulnerable to mental *disorders. Several related studies conducted in China make clear the effects of Internet use on brain structure. One study has shown that *volume @losses were seen in the *gray matter areas of Internet addicts' brains. These areas are involved in people's ability to develop *empathy and compassion for others. Another Chinese study used MRI scans to look at the brains of Internet-addicted teenagers and found significant damage in the *white-matter nerve fibers connecting the brain areas governing emotions, decision-making, and self-control. Similar (4) can be seen in the brains of heavy alcohol and drug users. 2. a-bil-i-ty 3. access 4. va-ri-e-ty 5. in-tro-duce アイウエ アイ アイウエ アイウ () cell phone: ## 1. ( survey: drastic: 極端な log on : アクセスする obsessed with~: ~に夢中になる addiction: insomnia: I due to~: ~のため volume: disorder: # U empathy: # white-matter: Japanese Cabinet Office: psychological: 心理的な adverse effects: vulnerable to~: ~になりやすい gray matter: K Я, + ①~④に入れるのに最も適した語をそれぞれ一つずつ選び、その記号で答えなさい。 1 ( with into A to = at) 2 ( from in on = above)

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英語 高校生

関西学院大学の英語の問題です。 定期テストの初見問題で出た問題なのですがBの(2)の線で引いた問題(空欄補充・画像1枚目の13行目の真ん中辺りにあるgeneration (2) generationの問題です。)の答えがなぜ(エ)afterなのかが分かりません。 どなたか教... 続きを読む

次の英文を読み、 下記の設問 (A~D) に答えなさい。 In the last few decades, people all over the world have been told that humankind is on the path to equality, and that globalization and new technologies will help us get there sooner) In reality, the twenty- first century might create the most unequal societies in history. Though globalization and the Internet bridge the gap between countries, they threaten to enlarge the gap between classes, and just as humankind seems about to achieve global unification, the species itself might divide into different biological types. Inequality goes back to the Stone Age. Thirty thousand years ago, hunter-gatherer tribes buried some members in grand graves filled with thousands of ivory beads, bracelets, jewels and art objects, while other members had to (7)settle for a mere hole in the ground. ( 1), ancient hunter-gatherer tribes were still more egalitarian* than any succeeding human society, because they had very little property. Property is a condition for long-term inequality. Following the Agricultural Revolution, property multiplied, and with it inequality. As humans gained ownership of land, animals, plants and tools, hierarchical** societies emerged, in which small elites monopolized wealth and power for generation (2) generation. Hierarchy, then, came to be recognized not just as the model, but also as the ideal. How can there be order without a clear hierarchy between elites and ordinary people, between men and women, or between parents and children? Authorities all over the world patiently explained that just as in the human body not all parts are equal, so also in human society equality will bring nothing (3) disorder. In the late modern era, however, equality became an ideal in almost all human societies. It was mainly due to the Industrial Revolution, which made the masses more important than ever before. Industrial economies relied on masses of common workers, (4) industrial armies relied on masses of common soldiers. Governments invested heavily in the health, education and welfare of the masses, because they needed millions of healthy workers to operate the production lines and millions of loyal soldiers to fight in the wars. with ti own no (3) of sup horizo partic again A. Consequently, the history of the twentieth century revolved around the ( 5 ) of inequality between classes, races and genders. Though the world of the year 2000 still had its share of hierarchies, it was かなり nevertheless a much more equal place than the world of 1900. In the first years of the twenty-first century people expected that the egalitarian process would continue and even speed up. In particular, they hoped that globalization would spread economic growth throughout the world, and that as a result people in India and Egypt would come to enjoy the same opportunities and privileges as people in Finland and Canada. An entire generation grew up on this hope. Now it seems that this hope might not be fulfilled. Globalization has certainly profited large portions of humanity, but there are signs of growing inequality both between and within societies. Some groups increasingly monopolize the fruits of globalization, while billions are left behind. Already today, the richest hundred people together own more than the poorest four billion. This could get (6) worse. The rise of Al (Artificial Intelligence) might eliminate the economic value and political power of most humans. At the same time, improvements in biotechnology might make it possible to translate economic inequality into biological inequality. Soon the super rich might be able to buy life itself. If new treatments for extending life and for upgrading physical and intellectual abilities prove to be expensive, a huge biological gap might open up between the rich and the poor. By 2100, the rich might be more talented, more creative and more intelligent than the less advantaged. Once a real gap in ability opens between the rich and the poor, it will become almost impossible to close it. If the rich use their superior abilities to enrich themselves further, and if more money can buy them more efficient bodies and brains, B B V

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