問2の(3)(4)を教えてください

問2. ばね定数 k [N /m] (k > 0) の軽いばねがある。なめらかな水平面上でこ 自然長 のばねの左端を固定し、右端に質量 m kg] の物体を取り付けた。次に、 手で mm 物体を引っ張ってばねを自然長より cm 伸ばしてから静かに手を放した。図 0 に定義された座標軸に基づいて、その後の物体の運動について、以下の間に答 えよ。ただし,時刻 ts]での物体の位置を (t) [m] とし、ばねが自然長のときの物体の位置を原点とする。 (1) Find the restoring force F, [N] that the spring tries to return when the object is displaced by z m from its natural length. (2 points) d'z as its acceleration. dt? (2 points) (2) Find the equation of motion of the object, using the notation of (3) Find the general solution of the equation of motion of the object. (3 points) (4) Find the solution that meets the initial conditions described in the problem. Here, the moment when the hand is released is set as time t==0s. (3 points) 問3.問2では摩擦などの抵抗力がない理想的な単振動を扱ったが、実際には抵抗力が存在する。 抵抗力は速度 dt に比例することが多く、この比例定数をc[N.s/m] (c> 0) とおくと、 運動方程式は教科書 P.66 の(2.40)式として表 される。この方程式の一般解は、 教科書 P.52に示す「定数係数の2階線形同次微分方程式の一般解」として表され、 教科書 P.66 の下段3行に示すような解 a) c)となる。これらの解の導出課程を、 以下の手順に従って示せ。 d。 da. (1)(2.40)式 m = ーkc - c dt? の右辺において、c dt の項の符号がマイナスである理由を考察せよ。 dt (2点)

この設問1の英文のように設問2ではtable2をみて英作文をしなければならないのですが、全くどう始めたら良いか分からないので教えて頂きたいです。

第2問 2019 Percentage Total population (including foreign residents) 2019* change in population 2000-2019 (%) Prefecture (alphabetical order) 2010 2000 +1.76 5,104,000 5,015,699 5,071,968 -10.31 Fukuoka 1,602,000 Kagoshima 1,786,194 1,706,242 -5.99 1,748,000 Kumamoto 1,859,344 1,817,426 -8.29 1,073,000 Miyazaki 1,170,007 28 1,135,233 -12.50 1,327,000 Nagasaki 1,516,523 1,426,779 -7.05 1,135,000 Oita 1,221,140 1,196,529 +10.22 1,453,000 Okinawa 1,318,220 1,392,818 -7.03 815,000 Saga 876,654 849,788 -3.43 14,257,000 All Kyushu 14,763,781 14,596,783 * estimated data Data adapted from: Statistics Dashboard, Statistics Bureau, Ministry of Internal Affairs and Communications. Retrieved on June 25, 2020 from https://dashboard.e-stat.go.jp/en/ TABLE 2: Average number of elementary school students per elementary school in Japan in 2000, 2010 and 2019 Average number of elementary school students per Number of elementary Number of elementary Year school students schools elementary school 2000 7,366,079 24,106 305.6 2010 6,993,376 22,000 317.9 2019 6,368,550 19,738 322.7 Data adapted from:

Tactics for TOIEC, listening and reading testの P.26-27のB:Minitestの解答教えてほしいです😖 よろしくお願いします

ETS, Listening. Learning. Leading. Content is authorized by ETS and contains official TOEIC® test items Tactics for TOEIC Listening and Reading Test Grant Trew OXFORD 1|日こ

TOEFLの過去問です 18･･･なぜareが違うのか分かりません 正しく直すとどのようになるのでしょうか？ 21･･･a personが単数主語で、after節の主語も それを指すのでtheyではなくheまたはsheに ... 続きを読む

18. genetics isla relatively young science, but the forces of heredity are C A B appreciated fora long time. D C Written Expres:

(6)〜(9)わかる人お願いしますm(*_ _)m aとbは同じ単語です

6) 2) 8) 9) a. Under Mark's _____,the branch enjoyed great SUCCeSS. b. Please report any ISSUeStO____ a. Kento wore a nice business __ _ _tohisjob intervieW. b. The citizen's group filed a__ _ against the factory for polluting the air. a. Mr. Abe wonthe general___ _in2015. b. Let's go to the bar to celebrate yOU「 ___ a. Can you tell me the _____ofthis word? b.Whatsthe__ _ ofthis story? 6) 人) に)) 9)

なぜ赤線のやくになるのかわかりません また半インテリ　四半分インテリとはどういう意味ですか？

たの文を読み,要皆を二つに分けて, それぞれ (1) 「普通教育普及の人害 ) ② 「その届害をのぞく可能性は…] という書き出しで, 1) は45字 5 字まで. (⑫) は30 字から 40 字までの宇数で記せ。ただし指定の書き 出しの文句も字数に入れる。 (名読点も字数に入れる。) j Our modern system of popular education was indeed indispensable and has conferred great benefits on the country, but it has been a disappointment in some important respects.②Generally speaking, has produced a vast population able to read but unable to distinguish : what is worth reading, an easy prey to sensations and cheap appeals. ③Consequently both literature and journalism have been to a large extent debased since 1870, because they now entertain millions of halfeducated and quarter-educated people, whose forbears, not being ④The small highly educated class no longer sets the standard to | | tme extent (hat it used to do, and tends to adopt the standards ot the majority. ⑤ Whether in the twentieth or twenty-first century the Jower forms of literature and journalism will completely devour the higher has yet to be seen. ⑥If they do not,it will be due to 5 improved Secondary and Higher Education forming a sufficiently ]arge class to perpetuate a demand for things really worth reading GZ5 [注] forbears = ancestors perpetuate = preserve, keep up