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Subject

Type of questions

Physics Senior High

物理のエネルギー保存則の問題です。 この問題の(2)は等加速度直線運動の公式を使って解くことは出来ないのでしょうか?? 等加速度直線運動の公式は摩擦があると使えないということなのですか…?? 教えていただきたいです!!

34 力学 [11] エネルギー保存則 質量mの小球Pと3mの小物 体Q を糸で結び、Qを傾角30°の 斜面上の点Aに置き、糸を斜面 と平行にし、滑車にかけてPを つるす。 斜面は点Aの上側では 滑らかであるが、下側は粗く、 Qとの間の動摩擦係数は 1/3で P m Vo +1 Vo 3m → C 30° ある。Pに鉛直下向きの初速vo を与えたところ, Qもひで点Aから動 き出した。 重力加速度をgとし エネルギー保存則を用いて答えよ。 ((1) Q の達する最高点Bと点Aとの距離はいくらか。 (2) はやがて下へ滑り点Cで止まった。 AC間の距離Lはいくらか。 Level (1) ★ (2) Point & Hint Pの重力 mg よりもQの重力 の斜面方向の分力 3mg sin 30° の方が大きいので、静かに放せ →ばQ が下がりPが上がる状況。 運動方程式でも解けるが、エ ネルギー保存則で解かなければ ならないし、そのほうが早く解 ける。 !!! (1) 摩擦がないので力学的エネ Base 力学的エネルギー保存則 12m+位置エネルギー=一定 ※位置エネルギーには、重力の位置エ ネルギー mgh やばねの弾性エネ ルギー -hx2 などがある。 摩擦がないとき成り立つ。 厳密には 非保存力の仕事が0のとき成り立つ。 ルギー保存則が成り立つがPとQが糸を通して力を及ぼし合い、エネルギーの やり取りをしているので, PやQ単独では成立しない。 全体(物体系)について扱 うこと。運動エネルギーと位置エネルギーの総量が保存されるが、失われたエネ ルギー=現れたエネルギーとすると式を立てやすい。 (2) 元の位置に戻ったときの速さをまず押さえたい。 その後は摩擦があるので、摩 擦熱を取り入れ、エネルギー保存則を立てる。 摩擦熱=動摩擦力×滑った距離

Waiting Answers: 1
English Senior High

青線の部分が分かりません! ①なぜisが付かなくて先にaftenがつくのか ② watchesはなぜこの間に着くのか ③なぜTVなのにonがつくのか 質問多くてすみません💦ひとつでもわかる人は教えてください🙇‍

No. 05 2 一般動詞の文 likes などの文 点 合格 84 /100 日 内から適する語を選び、○で囲みなさい。 (1) Emi (like, likes, is ice cream very much. (2) Koji (play, like, plays) baseball after school. (3) I (walk, walks, comes to school every day. (4) My uncle (live, are, lives) in New York. ( 内の語を適する形(現在形)にして、( に入れなさい。 English hard. [study] (5点4) (74) to the park early in the morning. [go〕 (1) Your sister (2) My father (3)Kelly( a good friend in Japan. [have 〕 (4) Ms. Green ( English. [teach] 日本文に合うように、( に適する語を入れなさい。 (8点 5) (1) 私の母はときどきケーキを作ります。 My mother sometimes a cake. (2) 久美にはお兄さんが1人と妹さんが1人います。 Kumi a brother and a sister. (3) マイクは音楽が好きです。 彼はよく音楽を聞きます。 Mike music. He often ( (4) 私の姉は毎週本をたくさん読みます。 My sister a lot of books every week. たくさんの 毎週 ) to music. 】内の語句を使って、 日本文の意味を表す英文を書きなさい。 (12点) 私の父はよくテレビでサッカーの試合を見ます。 [often, soccer games 3人称単数現在形にする。 (1)~(4)のは、 そのままsをつけるのではないことに注意。 得点UP ③ 2(兄弟姉妹などがいる」は、 動詞 have を使って表す。 英語

Solved Answers: 2
English Senior High

(6)の模範解答が⭕️なのですが、問題文にはwhen Nightingale was young とあり、文中の黄色マーク🟡で引いた該当する文は、彼女が30歳になった時のことを言っているのから❌ではないのですか?教えてください🙏😭

次の英文を読んで、(1)~00までの文がその内容とあっていれば〇をそうでなければ×を解答 用紙に記入しなさい。 Florence Nightingale Florence Nightingale was born on May 12, 1920, into a wealthy family in England, and received the most luxurious education from an early age, learning not only foreign languages like French, Greek, and Italian, farmers she visited for charity work, she gradually began to think that she wanted to work in a job that but also mathematics, astronomy, psychology, and literature. However, after seeing the lives of poor served people. When she turned 30, she decided to become a nurse and started working at a hospital in London. Nightingale, who eventually became a director of a women's hospital, began to advocate the need for nurses with specialized training. At that time, nurses had a low status and were considered nothing more than servants who cared for the sick. A major turning point occurred in 1854. War began in Crimea*, present-day Ukraine, and Nightingale was sent there with 24 Catholic sisters and 14 nurses. Nightingale's efforts improved the hospital environment during the war. The Nightingale School of Nursing was established with the Nightingale Fund created during the war. Although Henri Dunant, a founding member of the International Committee of the Red Cross, highly praised her work, Nightingale was not involved in the International Committee of the Red Cross. This was because she believed that aid activities based on self-sacrifice by participants would not last long. Her famous quote, "Devotion without sacrifice is true service," expresses this well. It is said that this was due to the idea that "we rely on the spirit of service of our members, but without financial support, we are powerless." Nightingale only served wounded soldiers as a nurse for only two years during the Crimean War*, and became famous for her symbolic image of dedication and for her use of statistics to reform health care. The statistical methods she used at this time were highly praised, and she was considered a pioneer of statistics in England. Nightingale suffered from poor health from a young age, and is said to have spent most of her time in bed after returning from Crimea. Nightingale passed away peacefully at the age of 90 at her home in London on August 13, 1910. advocate* 主張する Crimea* クリミア半島 Crimean War* クリミア戦争 (1) Florence Nightingale was born in a wealthy family and she learned many foreign languages. (2) Nightingale wanted to be a nurse when she was small. P (3) It was when she was 30 years old that Nightingale wanted to be a nurse and started working at a hospital. (4) Nightingale's work in Crimea improved the environment of the hospital there. (5) Nightingale did great work to found the International Committee of the Red Cross. (6) When Nightingale was young, nurses were thought to be like servants. (7) Nightingale's famous words, "Devotion without sacrifice is true service," means self-sacrifice of the participants is always necessary rather than financial support. (8) Nightingale was not blessed with good health since young and spent much of her time in bed. (9) Nightingale is considered a pioneer of statistics in the world as she used statistics to reform health care. (10) Nightingale worked as a nurse all her life.

Solved Answers: 1