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物理 大学生・専門学校生・社会人

答え教えてほしいです!多くてすみません。

問題 1. 長さ ru のひもの先端に、質量のおもりを結ん で滑らかな水平面上で速さ 2 の円運動をさせ た。 その後、 ひもを円の中心方向に非常にゆっく りと引っ張って、長さを ro/7 にした。 このことに ついて、 下記の問いに答えなさい。 (a) この過程を通じて、 おもりの角運動量は保存 することを示せ。 1点 (b) ひもの長さr が ro≧r ≧ro/7 のときの、 お もりの速さと、 ひもがおもりを引く力の大 きさ F を求めよ。 2点 (c) ひもの長さが ru から ro/7に変化したときの おもりの運動エネルギーの変化量を求めよ。 ・・・1点 (d) ひもがおもりになした仕事を計算し、 おもり の運動エネルギーが増加した理由を説明せよ。 2点 2. 質量が M, 半径が α、 高さ (厚さ) がもの一様な 剛体円柱を考える。 それが、 仰角 6 の斜面を滑ら ずに転げ落ちる運動を考える。 剛体の重心は、常 に一つの平面内を運動し、 回転軸は常にこの平面 に垂直であるとする。 2-18 図に示したように、 重 心が運動する平面を ry平面にとって、重心の座 標を (2G, YG) とする。 また、円柱が斜面から受け る摩擦力の大きさをF、 垂直抗力の大きさをRと する。 Mg R 2-18 図 斜面を転落する円板 (a) (rg, yg) が満たすべき運動方程式を記しなさ い。... 1点 (b) 回転軸周りの力のモーメントの大きさNを 求めなさい。 ... 1点 (c) 回転軸周りの円柱の慣性モーメント Ⅰ を求め なさい。... 1点 (d) 剛体の回転角をとして、心が満たすべき回 転の運動方程式を記しなさい。 ... 1点 (e) 滑らないで転げ落ちるための条件式を記しな さい。 ...1点 (f) F が満たすべき方程式を記しなさい。・・・ 1点 (g) IGが満たすべき運動方程式を記しなさい。... 1点 3. 上記の運動の初期条件を次式で与えるとして、 下 記の問いに答えなさい。 t=0のとき、 πc (0)=L, Uc(0)= =0 drG dt (a) 任意の時刻における v(t) と rc (t) を求 めなさい。... 2点 (b) ro(t)=10Lのとき、 をLで表せ。... 1点 (c) このときの位置エネルギーの減少量Uを求め なさい。 ... 1点 (d) このときの重心の運動エネルギー KG を求め なさい。... 1点 (e) このときの回転エネルギー Krot を求めなさ |1点 い。 (f) この運動に関してエネルギー保存則は成り立 っているかどうか論じなさい。 ・・・1点 (g) 円柱の外枠の質量は無視できるとして、円柱 の中身が質量 M の液体で満たされている場 合を考える。 外枠と液体の間の摩擦が無視で きる場合は、液体は回転せずに滑り落ちると 考えられる。 中身が液体の場合と固体の場合 について、 落下速度がどうなるかについて、 エネルギー保存則と照らし合わせて論じなさ 1点

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TOEIC・英語 大学生・専門学校生・社会人

答え合わせの為、答えを教えて頂きたいです。 よろしくお願いします。ビジネス英語です。

Working with words 1 Complete the sentences with the words in bold. Change the form of the word in bold or add another word to it. supply 1 It's important to build good relationships with different suppliers. 2 Our supply chain begins with the manufacturer in India and ends in our UK shops. is much higher but it's transport 3 The cost of air faster. show 4 Customers from all over Europe visit our in Paris and Milan. invent 5 Every item in our photographic records of each of them. middle 6 The problem with using is that it adds to the final cost of products because we have to add on their fee. is unique, so we keep ship 7 We have a large. track 8 We use barcodes to stock coming in and out of the warehouse. made 9 All our pots are _, which makes them expensive, but our target customer doesn't want anything mass-produced. original 10 The arriving in three days. of the of the products is printed on the bottom of the box. 2 Underline the correct words in italics to complete the sentences. 1 The book is currently out of stock, but it is on / out of order, so we'll have it soon. 2 We need to stock up on / run out of headed paper. Could you put an order in? 3 I ran low on/out of ink, so I couldn't print out the report. 4 We can keep track of/ on track our order by satellite. 5 Let's stop at the next service station. We are running low/out on petrol. Business 1 Complete the phone call between Virginie, a customer, and Kevin, a call handler. Put the words in italics in the correct order. Kevin Good afternoon, you're speaking to Kevin. How can I help you? Virginie Hello, I am up/chasing/an/order chasing up an order I placed three weeks ago. Kevin account /take/I/your/details / Can please? 2 Virginie Yes. The account number is 572638. Kevin OK. If you bear with me a moment, I'll into / look/it 3 Let me see. Well, my /to / information / according it is still on order. 4 Virginie I really need to know happened /to/has/it/ what 5 Could check/me/you/it/for/out 6 ? Kevin Certainly. I'll back/you/to/hour / within/get/ the 7 Virginie Thank you. 2 Kevin calls Virginie back. Complete their conversation with the phrases from the list. put the order straight through asap charge it to was dispatched on check it out as quick as we can must have gone wrong Kevin Hello, this is Kevin from DYK calling. I've got some information about your order. Virginie Oh, thanks for calling back. So, what's happened to it? Kevin Well, we put the order straight through to the warehouse, and it 2_ the 25th. Virginie But I haven't received it yet. Kevin I'm sorry about that. Can you confirm the delivery address? Virginie We wanted it delivered to our Brussels office. Kevin Oh, something 3 It looks like it might have gone to your Paris office instead. I'll 4 straightaway. Virginie I've already been waiting three weeks. Could you just send it again 5 ? Kevin OK, no problem. We'll resend it Virginie Thank you. And please not the Paris one. the Brussels account,

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TOEIC・英語 大学生・専門学校生・社会人

自分の回答があっているか不安なので、4第答えて頂きたいです。 自分の回答はこちらには見にくくなってしまうため書いていません。

Working with words 1 Complete the review of a hotel. Use the answers to complete the puzzle and find the European city where the hotel is located. HOTEL REVIEWS This first-class hotel and conference centre welcomes guests from all over the world. Its 1 facilities are second to none. There are 300 en-suite rooms and five apartment suites. For business guests, it has ten meetings rooms, two of which are big enough to be used as halls. 2 The hotel can also organize events such as guided 3 around the town centre for conference 4 and hotel guests who enjoy a bit of 5 For food-lovers, the four-star restaurant serves regional 6 every evening. All in all, this is a top-class for business and for pleasure. 7 6 1 A fa 0 il i t 1 e S 2 Replace the words in italics (1-8) with the phrases from the list. Add a pronoun if necessary. you hotel? look around meet up with show someone around 3 freshen up eat out pick someone up check in drop someone off Pedro It's difficult to park here. Can I stop and leave drop you off in front of the 1 Sabrina Sure, I'll register 2 and then I'd like to have a wash, and change my clothes 3 Pedro If you like, tonight I can give you a tour of 4 the old city. We could by eat in a restaurant 5 the port. Sabrina That sounds great! I'd rather walk about and See 6 the city than stay in my hotel room. Pedro I'll collect you 7 8 8.30 p.m. We'll see Alberto and Maite in the main square. at Business communication 1 Put the words in the correct order to make expressions. 1 meet person / it's / nice / to / you / in It's nice to meet you in person 2 have / did / finding / you/ any / trouble / us? 3 worry / signing / don't / about / in 4 through / programme / I'll / run / today's 5 this my / come / way / to / office 6 need building / you'll / this / enter / badge/ the / to 7 reception / sure / make / in / at / you / sign 2 Raymond Roberts has an appointment with Janet Rose. He has just arrived at HBG premises. Complete their conversation with the phrases from the list. let me take your bag can I get you a drink Welcome to HBG publishing I thought you could catch up again how was your journey You'll need this Make sure you 1 Raymond Good morning, I'm here to see Janet Rose. Janet Hello, I'm Janet. ¹ Welcome to HBG publishing. Raymond It's nice to meet you in person. Janet Likewise. So, 2 Raymond Well, there were traffic jams on the motorway and I got a little bit lost in the industrial park. Janet Don't worry. That happens to everyone. Anyway, 3 - I'll store it in my office. Raymond I'll hang on to it if you don't mind. It's got all my stuff in it. Janet Well, if you change your mind just tell me. And 4 Raymond Thanks. I'll have a cup of tea, please. Janet Sure, I'll just get that for you in a second. First of all, I'll run through the schedule. 5 start by meeting Karen Rankin this morning and then we'll 6 at lunchtime. Raymond OK. And will I see Malcolm Briscoe? Janet Yes, in fact he's joining us for lunch. One other thing. security pass. at all times. 7 It's your 8 wear it

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