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数学 高校生

問5でなぜ速さが一定となるのでしようか。起電力と誘導起電力が等しくなったのちも、どうせ導体棒には下向きの重力が働いて下向きの加速度が存在すると思うのですが、、

全統模試】 数αは0 Jo 1+x² す定数とす C2:y 有してい 第1回転 全統検 全統 2020 3 (配点33点) 図1のように、鉛直上向きで磁束密度の大きさがBの一様な磁場中に、2本のなめ らかな導体レールXYが開隔で平行に置かれている。2本のレールの左側は水平で1. 同一水平面内にあり、途中から水平面となす角が0となるように傾斜している。水平 (1 部分の左端には、抵抗値R の抵抗R. 切り替えスイッチ S. 起電力の電池Eが接続 されている。 レール関には、長さん抵抗値 R. 質量mの金属棒PP' がレールに垂直 に設置されている。 金属棒PP' は, レールと垂直な姿勢を保ったまま。 レールから外 れることなくなめらかに動くことができる。 抵抗Rおよび金属棒PP 以外の電気抵抗 は無視でき,また, 電流が作る磁場の影響も無視できるものとする。 重力加速度の大き さをgとして, 以下の問に答えよ。 RIIT レール Y 111 R, m レールX 図1 切り替えスイッチSをaにつなぎ, レールの水平部分で金属棒PP'に右向きの初速 を与えたところ、 やがてPP'はレールの傾斜部分に達することなく, 水平部分で 静止した。 問1 金属棒PP' の速さがとなったときを考える。 このとき、 金属棒PP' をP'か Pの向きに流れる電流の大きさをIとする。 (1) 金属棒PP' に生じる誘導起電力の大きさを, B, を用いて表せ。 (2) 抵抗 R と金属棒PP' からなる閉回路について, キルヒホッフの第2法則を表 す式を書け。 R, I L, B, を用いて表せ。 (3) 金属棒PP' の運動方程式を書け。 ただし, PP' の加速度は右向きにaとし a LLBを用いて表せ。 (4) 加速度αを, m, R, LB, を用いて表せ。 問2 金属棒PP' が動き出してから静止するまでの間に、 抵抗 R で発生したジュール 熱を求めよ。 次に, 切り替えスイッチSをbに接続し, 金属棒PP' をレールの水平部分で静かに 放す。 このとき, 金属棒PP' は傾斜部分に達する前に一定の速さとなり、その後レー ルから離れることなく傾斜部分を運動するようになった。 問3 金属棒PP' の水平部分での一定の速さを求めよ。 問4 傾斜部分を運動し、金属棒PP' の速さがとなったとき、 PP' の加速度を求めよ。 ただし、加速度は斜面に沿って下向きを正の向きとする。 5 やがて金属棒 PP は傾斜部分で一定の速さとなる。 このときの電池の供給電力 をW, 抵抗 R と金属棒PPでの消費電力の和をPとする。 一定となった速さを、 W, P.m, g, eを用いて表せ。 usina ひひ V=UBX 30 IBR 運動方程式 ・3 →ひ 5, -B 運動方程式 usont (2) ZRI=ひBℓ (3) ma=-IBR (4) 3 問2.RとPで発生したジュール熱の和は1/21m² どちらも抵抗値が同じなのでRでのジュール熱は Q = = = =^ mus ² = = myst 3, BO aBl →F md = ミラデ+I'Bl TB 一定の速さ⇒ al=0. E Bl a=- DATE IBT ucose [Bl coso UB²³1² 2m² 導体棒の速さがひとなった時 ザックの法則 E-UBX= ZRI! 4 3 E ・千 mgy PPに流れる電流ⅠはRRI=E-UBWSO Ⅰ = (E-uplus) Bl 2R 4 a's (E-VB) Bl 2m ma= mgsing + IB co so a= gsind t 15ftinec w+msing xひたエレン ==ma². (E-valcoso) By coso 2 91= Wil cost ネルギー保存 (Wingsing. u = (P) P-W mgsing 2 辞ックのし 仕

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英語 高校生

この問題の答えと解き方をお願いします!

[文法 BC Grammar & Vocabulary 文法・語い Theme 形容詞・副詞の語法 語いD] B 日本文の意味に合うように、( )に適語を入れなさい。 (1) 一般的に,銀の価格は金の価格よりも安い。 In general, the price of silver is ( (2) かなりの数のアメリカ人が和食を食べるのを楽しんでいる。 Quite a ( (3) 早くも3月には桜が咲き始めた。 ) Americans enjoy eating Japanese food. UNT 14 ) than that of gold. The cherry blossoms began to bloom as ( (4) 彼は一生懸命取り組めば多くのことを成しとげる能力がある。 He is ( ) of accomplishing many things if he works hard. (5) 霧のために,私たちには前方の道がほとんど見えなかった。 Because of the fog, we could ( ) see the road ahead of us. C 日本文の意味に合うように, (1) 棚にあるDVD の3分の1はビリーのものだ。 ( the shelf / third / the DVDs / of / on / one) are Billy's. 内の語(句) を並べかえなさい。 ) as March. (4) これは私が買いたかった, まさにその本です。 This (book / the / is / I / wanted / that / buy / very / to ). ⑥ familiar (2) Having worked here for two years, ⓒ guilty of b aware of 127 /10 (各3点) (2) 電車に乗り遅れないように6時きっかりに来ることを忘れないでください。 Don't forget to come at (the train / sharp / that / don't / we / six o'clock / miss / so ). (3) エレンは,ロイから受け取った手紙をほとんどすべて燃やした。 Ellen burned (from / all / received / the / Roy / she / letters / almost ). 獨協大学 @abrupt (各3点) D に入る適切な語(句)を下から選び,記号で答え, 下線部を和訳しなさい。 (各5点) (1) Jane was very hungry, so she ordered an extra large pizza for lunch. When it arrived, it was ( ). She could only eat half of it. ⓒ offensive @enormous 〈立正大学 〉 Harry has become ( ) the work. ⓒ accustomed to ⓓ relevant to Expr E

未解決 回答数: 1
英語 中学生

暗いし、長いし、申し訳ないです💦 3以外の、1、2、4、5、6、7を教えてください🙏🙇‍♀️

4 次の英文は、中学生の彩音 (Ayane)が、アメリカ滞在中のホストファミリーであるスミ ス夫妻 (Mr. and Mrs. Smith)の親戚であるベルギー(Belgium)出身の大学生 (university student) のエレン (Ellen) と交流した話です。 1~7の問いに答えなさい。 I've lived here since Ayane stayed in the United States this summer to study English. First, she lived only with Mr. and Mrs. Smith. A week later, Mr. Smith said, "I came to work in the United States from Belgium about twenty years ago. then, but some of my family still live in Belgium. My brother's daughter will come from Belgium to live here. Her name is Ellen, and she will go to university s here. I hope you will be good friends." Soon after that, Ellen came. She started studying at the university to run her own business in the future. She was very kind. Ayane and Ellen often went out together on weekends. ア Before the movie, 10 One day, Ayane and Ellen went to see a movie. they went to a shop to buy something to eat. Ellen bought a hamburger and some French fries. Ayane said, "Do you know that ( 2 )? It's 'fried potatoes." Ellen was surprised. She asked Ayane, "Where did French fries originally come from?" Many people think they are from the United States. Ayane thought they came from France because the name is "French" fries. So she answered, “France !” 15 That was wrong. Ellen said that French fries were originally from Belgium. Ayane was surprised. Ellen said, "When American soldiers went to Europe in World War I, they ate frites. Frites are popular food in Belgium. They're like French fries. The American soldiers liked them. The people in the area spoke French at that time, so the soldiers thought the area was in France. Later the 20 soldiers brought the food to the United States. So the name became French fries." That was an interesting story to Ayane. She didn't know that people speak French in some areas of Belgium. Ellen also can speak French. Ayane was surprised again. Then Ayane bought some waffles at the shop because she heard they were 25 very good. Ayane said, "Waffles are also originally from your country, right?" Ellen answered, "Yes. I've liked them since I was a child." Ayane heard that Ellen's dream is to run waffle shops in many countries. She hopes waffles will spread into more countries, so she is studying business at the university. Ayane said, "These waffles are nice! I like waffles, too. When you start your 30 waffle shop in Japan, can I help you at the shop?" Ellen answered, "Yes. Oh, the movie will start soon. Let's go, Ayane!" "Yes, let's go," Ayane said. Ayane was happy because she understood Ellen and her country better.

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英語 中学生

長いですが、教えてください🙏

4 次の英文は、中学生の彩音 (Ayane) が、 アメリカ滞在中のホストファミリーであるスミ ス夫妻 (Mr, and Mrs. Smith) の親戚であるベルギー (Belgium) 出身の大学生 (university student) のエレン (Ellen) と交流した話です。 1~7の問いに答えなさい。 Ayane stayed in the United States this summer to study English. First, she lived only with Mr. and Mrs. Smith. A week later, Mr. Smith said, "I came to work in the United States from Belgium about twenty years ago. I've lived here since then, but some of my family still live in Belgium. My brother's daughter will come from Belgium to live here. Her name is Ellen, and she will go to university s here. I hope you will be good friends." Soon after that, Ellen came. She started studying at the university to run her own business in the future. She was very kind. Ayane and Ellen often went out together on weekends. One day, Ayane and Ellen went to see a movie. ア Before the movie, 10 they went to a shop to buy something to eat. Ellen bought a hamburger and some French fries. Ayane said, "Do you know that ( )? It's 'fried potatoes." Ellen was surprised. She asked Ayane, "Where did French fries originally come from?" Many people think they are from the United States. Ayane thought they came from France because the name is "French" fries. So she answered, "France !" 15 That was wrong. イ Ellen said that French fries were originally from Belgium. Ayane was surprised. Ellen said, "When American soldiers went to Europe in World War I, they ate frites. Frites are popular food in Belgium. They're like French fries. The American soldiers liked them. The people in the area spoke French at that time, so the soldiers thought the area was in France. Later the 20 soldiers brought the food to the United States. So the name became French fries." That was an interesting story to Ayane. She didn't know that people speak French in some areas of Belgium. Ellen also can speak French. Ayane was surprised again. Then Ayane bought some waffles at the shop because she heard they were 25 very good. Ayane said, "Waffles are also originally from your country, right?" Ellen answered, "Yes. I've liked them since I was a child." Ayane heard that Ellen's dream is to run waffle shops in many countries. She hopes waffles will spread into more countries, so she is studying business at the university. Ayane said, "These waffles are nice! I like waffles, too. When you start your 30 waffle shop in Japan, can I help you at the shop?" Ellen answered, "Yes. Oh, the movie will start soon. Let's go, Ayane!" "Yes, let's go," Ayane said. Ayane was happy because she understood Ellen and her country better. (注) still: 今でも run ~を経営する business: 事業, ビジネス hamburger : ハンバーガー French fries / frites (= fried potatoes): フライドポテト (French は 「フランスの [語]」, fries は 「揚げ物」) originally: もとは wrong : まちがった France: フランス World War I- American : アメリカ人の soldier: t Europe ヨーロッパ waffle : ワッフル -5- area:

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