bai tap tu luan co dap an ve oxi luu huynh

... phía trước nên hãm phanh ôtô chuyển động thêm 25 m dừng hẳn Biết cường độ trung bình lực hãm 2.104 N Tính vận tốc xe lúc bắt đầu hãm phanh khoảng thời gian từ lúc hãm phanh đến lúc dừng hẳn? ... tốc 72 km/h đoạn đường ngang Tàu hãm phanh đột ngột bị trượt quãng đường dài 160 m phút trước dừng hẳn a) Trong trình hãm phanh, động tàu giảm bao nhiêu? b) Lực hãm phanh xem không đổi Tìm lực ... lái xe thấy có chướng ngại cách 10 m đạp phanh a) Khi đường khô, hãm phanh 22000 N Xe dừng cách chướng ngại bao nhiêu? b) Khi đường ướt, lực hãm phanh 8000 N Tính động vận tốc xe lúc va vào chướng...

Ngày tải lên: 11/02/2014, 10:50

... Thầy Nguyễn Văn Dân – Long An – 0975733056 Bài Tia sáng từ thủy tinh có chiết suất n1  sang nước có chiết suất n2  Tính: a Góc khúc xạ góc tới 300 b Góc ... suốt có chiết suất n chưa biết sang khơng khí với góc tới hình vẽ Cho biết  = 60o,  = 30o a) Tính chiết suất n chất lỏng b) Tính góc  lớn để tia sáng khơng thể ló sang mơi trường khơng khí phía ... xuống hồ theo phương hợp với pháp tuyến mặt nước góc 600 Tính chiều dài bóng gậy mặt nước đáy hồ? ĐS: 0,85m 2,11m Bài 16 Đối với ánh sáng đơn sắc, chiết suất tuyết đối nước 4/3, chiết suất tỉ...

Ngày tải lên: 23/03/2014, 23:53

... theo ống nhỏ giọt thẳng đứng có đường kính mm Thời gian giọt rơi sau giọt s Sau thời gian 780 s có 100 g rượu chảy Tính suất căng mặt ngòai rượu Coi chỗ thắt giọt rượu bắt đầu rơi có đường kính đường ... 94,05 kJ Bài 2: Một ấm nước chứa 0,75 kg nước nóng 80 C Sau thời gian nước ấm 200C Tính nhiệt lượng mà nước tỏa khoảng thời gian trên, biết nhiệt dung riêng nước 4,18 (kJ/kg.K Đs: 188,1 kJ Bài ... thành sôi (ở 1000C), em học sinh làm thí nghiệm sau Cho l nước (coi kg nước) 100C vào ấm đặt lên bếp điện để đun Theo dõi thời gian đun, em học sinh ghi chép số liệu sau đây: - Để đun nóng nước...

Ngày tải lên: 29/08/2014, 12:27

... apple apples IV Thêm “a” hay an a _ car an _ arm a _ house a _ cat a _ student _an ink-pot _a small orange an _ old book a _university 10 an _honest man S H U CÁCH I Dùng cách s h ... t ñ u b ng m t ph âm Ex: a book, a pen, … - an ñ ng trư c danh t s b t ñ u b ng m t nguyên âm Ex: an apple, an orange, an egg, an umbrella, an island, … 1.2 Hình th c s nhi u: 1.2.1 H p qui ... life – lives; wolf – wolves; self – selves; leaf – leaves; thief – thives Tuy nhiên có m t s danh t t n f ho c fe v n theo quy t c chung : Cliff – cliffs; handkerchief – handkerchiefs; roof – roofs...

Ngày tải lên: 06/08/2015, 22:00

... you like _ and visit my country? A come B coming C to come D came The children their parents for a long time A didn’t see B haven’t seen C don’t see D haven’t see I and Kenny ... 58-58-12 - Trang | - Khóa h c LTðH môn Ti ng Anh – Giáo viên: Vũ Th Mai Phương B n ch t s so sánh Ti ng Anh A will have B will be being C will have been D has had 63 "Did Susan have a chance to get ... off the gas before going out A turn B turning C to turn D turned 54 I suggest money for the poor people in our neighbourhood A save B to save C saving D saved 55 He got wet _ he forgot...

Ngày tải lên: 06/08/2015, 22:41

... yesterday, I _ them A had discovered / would inform C had discovered / would have informed B had discovered / could inform D discovered / can inform 17 If you to the course regularly, they ... / gave C go / give B had gone / would have given D went / would give 18 I think he is not at home If he in, he _the phone A was / answered C were / would answer B were / would have answered ... business A would invest B invested C had invested D invests 26 It if nobody had reminded them A would have be forgot B would have been forgotten C would have forget D would have been forgot...

Ngày tải lên: 06/08/2015, 22:41

... underlined verb in the subordinate clause from the Simple Present Indicative to the Simple Past Subjunctive; and change the underlined verb in the main clause from the Simple Future to the Simple conjugation ... with would For example: If she is angry, she will scold us If she were angry, she would scold us If he wins, we will congratulate him If he won, we would congratulate him They will join us, if ... she _open the window (to open) They demanded that he leave _ the room (to leave) I will ask that she _accompany me (to accompany) They recommended that he fly _ to Bermuda (to...

Ngày tải lên: 06/08/2015, 22:41

... breakup A breakdown Burning coal is an way of heating a house A economy B economic C economical There are very few places left on earth Man has been nearly everywhere A explore B exploring ... unappearance B inappearance C appearance There were 50 _ in the talent contest C competitors A competition B competitor Unless something is done about unemployment, the for the future is ... từ vựng (danh từ tính từ) em phải xem xét ý nghĩa từ để chọn đáp án xác Ex: Computer is one of the most important _of the 20th century A inventings B inventories C inventions D inventor Sau...

Ngày tải lên: 06/08/2015, 22:41

... opponents from scoring a prevent b preventing c prevention d preventable 77 Many young men prefer scuba-diving because it is _ a adventure b adventurous c adventurously d adventurist 78 I ... opponents from scoring a prevent b preventing c prevention d preventable 77 Many young men prefer scuba-diving because it is _ b adventurous c adventurously d adventurist a adventure 78 I ... - select - compel compelling - affirm - learn learned - decorate - comply compliant - image - vacate vacant - inform - grieve grievous - deceive - marvel marvelous - meddle - study studious -...

Ngày tải lên: 06/08/2015, 22:41

... beg, believe, cause, challenge, command, compel, consider, enable, encourage, expect, find, forbid, force, get, hate, imagine, instruct, intend, invite, know, like, love, mean, observe, order, ... the first man to come He gave me something to eat The questions to be answered are on page 10 I need some paper to write on I have come here to talk to you You should eat to live, not live to eat ... way b what c if d how 32 She is very glad _ see you again a in b with c to d for 33 He noticed two thieves _ out of a shop a to come b are coming c in coming d come 34 When will he be allowed...

Ngày tải lên: 06/08/2015, 22:42

... comes and the last who leaves He simply loves parties He is always the first to come and the last to leave The last person who leaves the room must turn off the lights The last person to leave ... number of students (who have been) counted is quite high 10 George is the man (who was) chosen to represent the committee at the convention IV Replace the underlined clauses by an infinitive or infinitive ... saw many soldiers and tanks (that) were moving to the front Love, which is wonderful, comes to everyone at some time in his life Freedom is something for which millions have given their lives...

Ngày tải lên: 06/08/2015, 22:42

... makes (1) an easy drive over bumpy roads, although the performance is somewhat let (2) by the handling round corners Maybe I just drove this monster too fast! The construction manual (3) ... now, thanks to a major new hotel development plan, business is (2) , and Panama is more than (3) its poor past showing and unfashionable image The kindest thing one can say about Panama is ... finance company has (5) a committee to investigate the new scourge of unnecessary meetings The number of weekly meetings for the committee has just been (6) up from two or three! A run over...

Ngày tải lên: 06/08/2015, 22:42

... d to have been Would you like _ to the party? a to come b come c coming d to have come Do you mind _ such a long way to work every day? a to travel b travel c to have traveled d traveling ... window and now it has gone d to give a to have given b giving c give 10 Someone must have taken my bad I clearly remember _ it by the window and now it has gone a leave b leaving c to leave d ... marrying d to have married 42 She did nothing but _ a cry b to cry c to have cried d crying 43 He can’t live without _ here a being loved b to love c love d loving 44 People are prevented from...

Ngày tải lên: 06/08/2015, 22:42

... However, Nevertheless, Nonetheless Ex: - He is old However, he is very active - He is old He is, however very active - He is old He is very active, however b Câu có ch a m nh ñ tr ng ng ch quan h tương ... much a cost the coat b does the coat cost c the coat costs d the coat is cost I have will be yours soon or later a No matter what b Whatever c Whether d That in the news that the Japanese ... much a cost the coat b does the coat cost c the coat costs d the coat is cost I have will be yours soon or later b Whatever c Whether d That a No matter what in the news that the Japanese...

Ngày tải lên: 06/08/2015, 22:43

... questions, I can’t anything to help you A answered B answer C would answer D are answering 47 Had you told me that this was going to happen, I it A would have never believed B don’t believe C hadn’t ... questions, I can’t anything to help you B answer C would answer D are answering A answered 47 Had you told me that this was going to happen, I it A would have never believed B don’t believe C hadn’t ... might not have succeeded in life as well as you have A have B would have C had had D should have 42 _ then what I know today, I would have saved myself a lot of time and trouble over the years...

Ngày tải lên: 06/08/2015, 22:43

... ng t th c s nhi u Ex: “Sons and Lovers” was one of the strangest books I ve ever read Tên c a ñơn v , t ch c danh t t p h p ñòi h i ñ ng t s Ex: Marshall, Smith, and Williams is a law firm Hocmai.vn ... neither, each, every, one hay ñ i t có one, body, thing (anyone, no one, some one, anybody, nobody, somebody, anything, everything ñòi h i ñ ng t hình th c s Ex: Each of us studies hard - C ... ng ñ i t k t h p v i dùng ñ ng t s Ex: Anybody and everybody is welcome * Lưu ý: Khi “each” theo sau ch ng không nh hư ng ñ n ñ ng t n a.Ví d n u ch ng danh t s nhi u theo sau b ng ñ i t each,...

Ngày tải lên: 06/08/2015, 22:43