Grade

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Physics Senior High

物理、単振動の問題です。 解説の (3)K=2k (4)U最大=2×1/2ka² の「2×」 (5)2×1/2kx²+1/2mv²=ka² の「2×」 の意味が分かりません 物理 単振動 ばね

必解や52.(2本のばねによる単振動〉 図のように,なめらかな水平面上に質量 m の物体Pが同 じばね定数kをもった2つのばね A, Bとばねが自然の長さ にある状態でつながっている。水平面上右向きにx軸をとり, このときの物体Pの位置を×座標の原点0とする。物体PをばねAのほうへ原点Oよりaだ けずらしてからはなす。このとき物体Pは単振動する。単振動は等速円運動のx軸上への正 射影の運動であるといえる。時刻 t=0 において, 物体Pはちょうど×座標の原点Oを正の 向きに向かって通過した。ばねの質量はないものとして, 次の問いに答えよ。 (1)任意の時刻tにおける物体Pの位置xおよび速度かを,等速円運動の角速度ωを用いて A B 00000 p m 表せ。 (2)任意の時刻tにおいて物体Pが位置xにあるときの加速度 αを,ωとxを用いて表せ。 また,2つのばねAとBから受ける力Fを,kとxを用いて表せ。 (3) 物体Pが x=a に達してから,初めて原点Oを通過するまでの時間 to と,初めて x= 2 -aを通過するまでの時間tを,kとmを用いて表せ。 (4)物体Pの運動エネルギーKの最大値とそのときの位置,およびはばねの弾性力による物体 Pの位置エネルギーUの最大値とそのときの位置を表せ。ただし,wやTを用いないこと。 (5) 物体Pが単振動しているときの速度と位置×の関係を求め,vを縦軸に,xを横軸にと ってグラフに示せ。このとき座標軸との交点を,a, kおよび mを用いて表せ。また、物 体Pが時間とともに図上をたどる向きを矢印で表せ。 【香川大 改)

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English Senior High

コミュニケーション英語(ランドマークⅡ advance d)の答えをなくしてしまいました、どなたか教えてくれる方いませんか🙇‍♂️

(札幌大) 次の文章を読んで,下の設問に答えなさい。 Gwen Stefani, lead singer of the pop group No Doubt, released her first solo album, Love, The album introduced to the world the Harajuku B Love, Angel, Music, Baby \arge win Angel, Music, Baby, in November 2002. Girls, who represented trendy Japanese culture. In a magazine interview, Stefani said the idea of using Japanese girls as dancers came to ating lary b 2opened - and her in a dream.(She first sang about this idea in the song “Rich Girl.") Stefani gave each Love, Angel, Music and Baby nd wants of the dancers a name from the title of her album called them the Harajuku Girls in reference to the exciting Tokyo shopping area popular or in Par The Harajuku Girls were instantly interesting and mysterious to young adults in the West. particularly the Gothic Lolita style. They with young people. The Harajuku Girl Mystique* everythin hat woul Their clothes symbolized Tokyo street fashion gaine nd appeared in the music videos for Stefani's new album, and accompanied her to awards turned 」 ceremonies and promotional events. The Harajuku Girls never spoke in public, which added oroduch singer develop other projects. Stefani designed a limited-edition digital camera (produced by a stron to their mystery. op to bu Not only did the Harajuku Girls inspire Stefani in her music making, they also helped the HP) featuring the Harajuku Girls. She also started a product line called "Harajuku Lovers." The line consists of clothing and accessories for men, women and children, as well as products for the home, featuring contemporary Japanese elements. [注] mystique : 神秘 問1.以下の問いに英語で答えなさい。 What are the names of the “Harajuku Girls"? 0en ai onide 問2.以下の質問に最も適切な答えを選びなさい。 (1) What are each of the Harajuku Girls named after? 2. Gwen Stefani's song “Rich Girl." 並べ替 4. The title of Gwen Stefani's album. 1. Japanese female dancers. 3. A popular Tokyo shopping area. (2) Which of the following statements about Harajuku Girls is false? 1. Their clothing represented Tokyo street fashion such as the Gothic Lolita style. 2. They symbolized the positive and aggressive attitudes of Japanese people. 3. They were considered mysterious as they did not speak. 4. They participated in Gwen Stefani's music videos and events. 33 Lesson 4

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