... > vC = v + 2g ( h BC − µS BC cos α) B h BC Với sinα = S = 0 ,6; cosα = − sin α = 0,8 BC Thay vào ta được: 225 + 20 (60 −10.0,8) = 1 265 ≈ 35,57 m/s Cách 2: Sử dụng phương pháp động lực học: Vật ... S = 0 ,6; cosα = − sin α = 0,8 BC Thay vào ta được: a = 10(0,8 – 0, 06) = 7,4ms-2 Mặt khác ta có: v C = v + 2aSBC = 225 + 2.100.2= 1025 - 40 B => vC = 1025 −40 21 ≈ 29,01 m/s http://vn. 360 plus.yahoo.com/anhchanghieuhoc95 ... tốc bao nhiêu? Bài 10: Hai cầu có khối lượng chuyển động không masat hướng vào với vận tốc 6ms -1 4ms-1 đến va chạm vào Sau va chạm cầu thứ hai bật ngược trở lại với vận tốc 3ms -1 Hỏi cầu thứ...
... them are former British colonies 66 A France B English C American D Britain 67 A left-handed B right-handed C sensible D thrusted 68 A slash B thrust C ride D hold 69 A conquered B visited C decreed ... because it is a way of (65 ) _ Except in formal situations, people speak to each other by their given names once they are acquainted 61 A head B mind C notebook D hand 62 A adventure B handshake ... adventure B handshake C militant D occasion 63 A Goodbye B Good morning C Not bad, thanks D Take care 64 A Bye B So long C No smoking D Fine, thanks 65 A having dinner B shaking hands C saying...
... all day on the beach I can’t see the ANSWER FOR WRITTEN TEST 01 I 1A 2C 3D 4D 5B 6A 7C 8B 9C 10A II let off takes after fallen out put me up go grey were injured was carrying hit...
... food but fry desert it 10 kill 11 polluted 12 over 13 trees 14 becomes 15 future 16 conserve/ save II 1B 2C 3D 4C 5A 6A 7B 8B 9A 10A III to have made writing solving to live, to eat seeing being ... theory assumption perform intriguing similar arise 10 support VII 1B 2A 3A 4A 5B 6B 7B 8A 9A 10B VIII 1C 2D 3B 4C 5C 6D 7B 8D IX criminal managing unsuccessful perfect appointment surprisingly unfriendly ... so kind (4)… downstairs?” To her surprise, the man meekly obeyed He was eager (5)… and anxious (6) … the old lady He prepared the tea and said he was sorry (7)… her He was too frightened (8)… ...
... them are former British colonies 66 A France B English C American D Britain 67 A left-handed B right-handed C sensible D thrusted 68 A slash B thrust C ride D hold 69 A conquered B visited C decreed ... because it is a way of (65 ) _ Except in formal situations, people speak to each other by their given names once they are acquainted 61 A head B mind C notebook D hand 62 A adventure B handshake ... adventure B handshake C militant D occasion 63 A Goodbye B Good morning C Not bad, thanks D Take care 64 A Bye B So long C No smoking D Fine, thanks 65 A having dinner B shaking hands C saying...
... prepared 11 during 12 their 13 upgrade 14 responsibilities 15 of 16 worker’s II the X 3X a/ the X X X X X 10 X11 the12 the13 X14 the15 the 16 the17 X 18 X III part-time inconvenient arrive receive at ... not having learned/ not learning would have had going should V 1A 2C 3B 4B 5B 6A 7A 8C 9A 10B 11A 12A 13C 14C 15A 16C 17A 18A 19A 20A VI F T T F F T T T VII apologize to sb for sthm VII employees, ... 13 A travel B voyage C journey 14 A leaving B lives C leaves 15 A on time B in time C to time 16 A a driver B a conductor C an inspector 17 A examine B question C look 18 A ride B drive C flight...
... food but fry desert it 10 kill 11 polluted 12 over 13 trees 14 becomes 15 future 16 conserve/ save II 1B 2C 3D 4C 5A 6A 7B 8B 9A 10A III to have made writing solving to live, to eat seeing being ... theory assumption perform intriguing similar arise 10 support VII 1B 2A 3A 4A 5B 6B 7B 8A 9A 10B VIII 1C 2D 3B 4C 5C 6D 7B 8D IX criminal managing unsuccessful perfect appointment surprisingly unfriendly ... so kind (4)… downstairs?” To her surprise, the man meekly obeyed He was eager (5)… and anxious (6) … the old lady He prepared the tea and said he was sorry (7)… her He was too frightened (8)… ...
... 5I 6H 7J 8E 9A 10C V regrettable preventive homeless friendly atmospheric 6, environmental logical woolen VI of of of with with to to by/ at of 10 about 11 of 12 about 13 to 14 of 15 for, on 16 ... children when went … holiday It rained everyday and they had to spend most of the time indoors 16 It wasn’t polite … him to leave without saying a word VII Supply the best word or words Two things ... example, we can’t avoid smoke in restaurants, hotels, and other public places Even though many (6) … places have “no smoking is permitted” It is even harder for children (7)… secondhand smoke In...
... UNIT I looked however operated middle type signals a special wake 10 replaced II 1B 2A 3C 4B 5B 6B III parks phoned reported had been stolen came to write were writing arrived had taken 10 to...
... English contains so much “Americanisms” that is often difficult to draw a sharp line Technical 6 as well as some slang expressions from TV films have been taken over and have 7… in British English,...
... should be something one will like and want, not just something you like Everyone has simple tastes (6. expensive) to buy or easy to make The (7.simplicity) present is often the most (8.appreciate) ... nothing I wouldn’t to prevent There’s nobody in France who doesn’t speak French VII 1D 2A 3D 4C 5A 6B VIII redecorated exposed scrubbing wound broadcast financed leaning stretched X – – – – – – –...
... (4)… they went to a dinner for a snack By the time they were ready to go (5)…, it was 2.00 in the (6) … Steve was worried about facing (7)… parents hours late then he had an idea He (8)… them before ... while before as soon as after by the time VIII alone undervalued because f hadn’t tried VI parents 6D as long as sleepy robbed whenever lay suit stop whose notice ...
... them are former British colonies 66 A France B English C American D Britain 67 A left-handed B right-handed C sensible D thrusted 68 A slash B thrust C ride D hold 69 A conquered B visited C decreed ... because it is a way of (65 ) _ Except in formal situations, people speak to each other by their given names once they are acquainted 61 A head B mind C notebook D hand 62 A adventure B handshake ... adventure B handshake C militant D occasion 63 A Goodbye B Good morning C Not bad, thanks D Take care 64 A Bye B So long C No smoking D Fine, thanks 65 A having dinner B shaking hands C saying...
... không mang điện 22 Cấu hình e nguyên tố là: A 1s22s22p63s23p63d6 B 1s22s22p63s23p63d64s2 C 1s22s22p63s23p63d74s2 D 1s22s22p63s23p63d84s2 Câu 26 Cấu hình e trạng thái nguyên tử kim loại sau có e ... phân lớp bão hòa? A s1, p3, d7, f12 B s2, p5, d9, f13 C s2, p4, d10, f11 D s2, p6, d10, f14 Câu 24 Nguyên tử X có cấu hình e mức lượng cao 4p5 Tỷ lệ só hạt không mang điện số hạt mang điện 0 ,64 29 ... Ôn tập Hóa học 10 Chương B Các AO phân lớp có mức lượng C Các AO phân lớp có định hướng không gian D Các AO phân lớp khác mức lượng Câu 14 Obitan nguyên tử Hidro trạng thái...
... là: A 6, 4 g B 9 ,6 g C 12,8 g D 16 g Câu 63 : Cho 200ml dung d ch Ba(OH)2 0,4M vào 250ml dung d ch H2SO4 0,3M Kh i lư ng k t t a thu c là: A 17 ,64 5 g B 16, 475 g C 17,475 g D 18 ,64 5 g Website: http://violet.vn/thethao0481 ... NO2, HCl, HBr D CO, NO, N2O Câu 60 : D n 1 ,68 lít khí CO2 ( ktc) vào x g dung d ch KOH 5 ,6% thu c mu i KHCO3 nh t x có giá tr là: A 75g B 150 g C 225 g D 300 g Câu 61 : Dùng 400ml dung d ch Ba(OH)2 ... 0,8 96 lít B 0,448 lít C 8, 960 lít D 4,480 lít Câu 62 : Nhi t phân hồn tồn 19,6g Cu(OH)2 thu c m t ch t r n màu en, dùng khí H2 dư kh ch t r n màu en ó thu c m t ch t r n màu có kh i lư ng là: A 6, 4...