この問題の解説を日本語でお願いします🙏

1. A particle of mass m moves in one-dimensional potential given by V(x) = Am cos(x) where λ, A > 0, with initial position xo and initial velocity vo. Draw a graph of the potential, and describe the motion of the particle in the following cases: TT a) x₁ = and v₁ = 0; 22 b) = = 0 and v0 = 0; 3πt 22 Xo c) Xo = - and vo= -2√A. - 2. A particle is dropped in the presence of Stokes drag Farag = -bv, where is the velocity of the particle and b> 0 is a constant. Write down the equation of motion in terms of , and show that the vertical component of the equation of motion is satisfied by: v₂(t) = mg 19 (exp(-)-1) b What is the terminal velocity of the particle? Is it possible to determine the terminal velocity without solving the equation of motion?

この問題の答えを教えてください🙇 Elixir3三訂版です。

26 29 27 28 UNIT 5 不定詞 ① Reading 44 Grammar & Expression Writing /28 (268 words) 18 Arda Tur 8 宇宙エレベーター (イメージ) Cross Reference 12 Listening 8 Reading 29.08 People have always been fascinated by the stars. In the late 1950s, we began using 929 916 Jeriw blb rockets to explore space. Today, rockets remain the only method for space travel. However, some scientists and companies are discussing other ways to travel into space. They are even suggesting that it may be possible to build a space elevator. Such an elevator would be ideal to take people or equipment to a satellite in Earth's vs m orbit, the moon, or even Mars. They believe it would be expensive to build, but cheap oved) snosili saporio of bedes bi 2515JmT: 63 to operate. It would be 3,000 times cheaper than rocket travel, and it would also be Jodm Tolvo Station and Tokyo Joy trw 59728 safer. These are all positive reasons for trying to construct a space elevator. Obayashi Corporation is a Japanese company that built Tokyo Skytree, and improved the Golden Gate Bridge in America to protect it against 10 earthquakes. It has now promised to make a space elevator, which will allow people itsetovnoj anti mon doiniqo ono ar jedW (1) to go to a space station. Currently, the firm is researching the materials and costs. in einbiguier Obayashi Corporation wants to complete its project by 2050. Insoningie pig sabi gdT Most experts say that such a space elevator is not realistic. They also say it biq SILP 10 would be too would be too expensive. Other experts, however, think that a space elevator will be 15 built one day. It may all depend on human imagination and ambition. In fact, when in 1961 President John F. Kennedy announced the dramatic and ambitious goal to send an American rocket to the moon, many people doubted it could be done. But his goal was achieved in July, 1969, when the astronaut Neil Armstrong stepped onto the Moon's surface. ange Total ⑨25分 0:40 大意把握 SW.Y 問1 次は ア. イ. ウ I 問2 20 E て 19

画像の4.2の問題の解き方を教えてください。

106 K M X(T) M. F sin (NT) (1)X 100 -100 ( XImax 80 0 0 4 Dimensional Scaling Analysis + KX = F sin (2T), X(0) = Xo, 1 n 2 10 T 3 Fig. 4.1 The elementary problem of a mass on spring with an applied force: (Left) dimensional parameters, (Right) solutions X(T) for various parameters and (Inset) the amplitude in relation to the forcing frequency ada 4.2 The governing equation for the linear mass-spring system shown in Fig. 4.1 is d²X dT² dX dT\T=0 20 = Vo, where X(T) [m] is the position of the mass as a function of time with mass M [kg], and spring coefficient K [N/m], magnitude of the applied force, F [N], forcing frequency, 2 [s], as well as general initial conditions, Nondimensionalize and select length- and time-scales L, T to normalise the coef- ficients of the terms on the left side of the ODE and the initial condition for position. Write and solve the scaled problem, and identify the dimensionless parameter for the ratio of the forcing frequency to resonant frequency, where the solution's amplitude grows without bound, as shown for 22 in Fig. 4.1. 4.3 Consider the initial value problem for a damped driven nonlinear oscillator:

この問題のECぶんのBEがなぜ5分の2になるのか教えてください

一点をD, 線分 CI は \c 種 E 11 4 ABCの辺BC を 2:5 に内分する点をDとする。 点Pは線分 AD (ただし、端点A, D は除く) 上にあり、 直線BP と辺 AC, 直線 CP と辺AB の交点をそれぞれ Q R とす る。さらに,直線 QR と 直線BCの交点をEとする。 点E の位置について考察しよう。 △ABCにおいて, 線分 AD, BQ, CR は点Pで交わるからチェバの定理により BD ×ア メイ= =1 DC △ABCと直線 EQ について, メネラウスの定理により ア キ エ に当てはまるものを次の ただし, 同じものを選んでもよい。 また, 順序は問わない。 CA AQ BE EC キ ②より, ×ウ × エ =1 BE EC BE EC CQ QA XO BEX 4.2 BD LQ BC XQA R オ カ 一 BD DC に当てはまるものを、次の ⑩ ~ ⑤ のうちから一つ選べ。 2:5 に内分する ①2:7 に内分する 3 2 : 5 に外分する ④ 27 に外分する したがって, BD=6のとき, EC=クケである。 A AB BR X ..... 2 Q ICQ OAR EC XAX RB 4489657 AR RBA ア であるから, 点Eは点Pの位置に関係なく線分BC を INDEUT 5 と AR (3 RB のうちから一つずつ選べ。 イ 201 AQ QC oq エ の解答の 7 : 5 に内分する ⑤ 7:5に外分する 2 BR RA BE 21 ③ 3+ 5 ①.③ NI める ←オカ

(x-5)の方に−をかけるのではなく(x+2)の方に−をかけるのはダメな理由が知りたいです。

9 √ x 2-10x+25+ √ x2+4x+4 をxの多項式で表せ。

下線部に入る答えは②であっていますか？ 教えていただけると助かります🙇‍♀️ よろしくお願いします！🙏

In fact, ride a 2 people bike! require to wear bike helmets whenever they is required are required requires

画像の問題を教えてください！

106 K M X(T) M. F sin (NT) (1)X 100 -100 ( XImax 80 0 0 4 Dimensional Scaling Analysis + KX = F sin (2T), X(0) = Xo, 1 n 2 10 T 3 Fig. 4.1 The elementary problem of a mass on spring with an applied force: (Left) dimensional parameters, (Right) solutions X(T) for various parameters and (Inset) the amplitude in relation to the forcing frequency ada 4.2 The governing equation for the linear mass-spring system shown in Fig. 4.1 is d²X dT² dX dT\T=0 20 = Vo, where X(T) [m] is the position of the mass as a function of time with mass M [kg], and spring coefficient K [N/m], magnitude of the applied force, F [N], forcing frequency, 2 [s], as well as general initial conditions, Nondimensionalize and select length- and time-scales L, T to normalise the coef- ficients of the terms on the left side of the ODE and the initial condition for position. Write and solve the scaled problem, and identify the dimensionless parameter for the ratio of the forcing frequency to resonant frequency, where the solution's amplitude grows without bound, as shown for 22 in Fig. 4.1. 4.3 Consider the initial value problem for a damped driven nonlinear oscillator:

コミュ英 ランドマークのレッスン3の問いです。 よろしければ答えていただけると幸いです。

Step 2 Comprehension Questions Paragraph 5 (5) Have you ever wondered why, among the world's large mammals, kangaroos alone hop? It turns out that hopping is the most efficient way of getting around at medium speeds. The energy of the bounce is stored in the tendons of the legs, and the intestines bounce up and down like a piston, emptying and filling the lungs without needing to activate the chest muscles. When you travel long distances to find a little feed, such efficiency is a must. Have you also wondered why koalas sleep for a long time? This is basically for economical reasons. With their eyes shut for about 16-20 hours a day, they can save energy as sleep requires very little energy. 1. Why do kangaroos hop? 2. Why is hopping the most efficient way of getting around at medium speeds? 3. Why do koalas sleep for a long time? Paragraph 6 (6) If you are visiting Australia for a short time, you don't have to go far to experience some of the richness of the environment. Even places like Sydney have preserved extraordinary fragments of their original environment that are relatively easy to access. It is worthwhile understanding the basics about how nature operates in Australia. This is important because there's nowhere like Australia. Once you get to know about its origins and natural rhythms, you will appreciate the place so much more. - 1. If you are visiting Australia for a short time, how far would you have to go to experience some of the richness of the environment? 2. Why is it important to understand the basics about how nature operates in Australia? 3. What will you appreciate so much more once you get to know about Australia's origins and natural rhythms?

まるで囲んである①のSheと③のtheyの代名詞が指してるものが分からないので教えてください

サムのリクエスト D: Disc Jockey (ディスクジョッキー) S: Sam (サム) ・「ラジオ番組などの放送で進行役をする人｣。 DJと略して使う場合も多い。 ① D: What's your request, Sam? 「リクエスト」 6 訳 サム, あなたのリクエストは何ですか? 2 S: "In My Life" by the Beatles. It's a present for my grandma. ◆ 「ビートルズ」。1960年代に活躍した音楽グループ。 訳 ビートルズの「イン・マイ・ライフ」です。 おばあちゃんへのプレゼントです。 ③D: Great! Does she like this song? (5) → ④ S: Absolutely! It reminds her of Grandpa. ｢そのとおり」 「いいね!」。相手の発言に対してポジティブに返す相づちとしてよく使われる表現。 訳 すばらしい! 彼女はこの歌が好きですか? → remind A of B「AにBを思い出させる」 訳 そのとおりです! この歌は彼女におじいちゃんを思い出させます When they were high school students, Isipoe ( he sang this song to her as a birthday present. →>> →｢~として」という意味の前置詞。 「歌った」。 sing ( 歌う) の過去形。 訳 彼らが高校生だったとき,彼は誕生日プレゼントとして彼女にこの歌を歌いま To her, this song is more precious than "Yesterday, " "Let It B ｢~にとって」 今回の文法事項です。 詳しくは次のページを見ましょう。 and other famous ones. →このones は songs, つまり 「ほかの歌」を示す。 訳 彼女にとって,この歌は 「イエスタデイ」 「レット・イット・ビー 有名な歌よりも大切なのです。

−（x− 9）　−になるかがわかりません。

(2) 4a(x-9)+9-x =4a(x-9)-(x-9) x-9=Aとおくと, 4a(x-9)-(x-9) =4aA-A =(4a-1)A =(4a-1)(x-9) A6q-EEq A gata 60 (4a-1)(x-9) 1 章 多項式