Đề ôn tập khí đàn hồi chương 4

... V1 V1 W= ∫ PdV = ∫ PV V2 1 dV = PV = 500 × 0.2 × ln = 16 0.94(kJ ) 1 ln V V1 0.2 b) Có  PV γ = const → PV 1. 4 = const  γ = 1, Từ ta có: 1, 4 1, 4 PV = PV → V2 = 1, 4 1 2 1, 4 PV 500 × 0. 21, 4 1 ... ) m (1 − n) 1 n − 1. 81 Bài 1. 9: Theo đề bài:  P1 = 500( kPa )  V1 = 0.2(m )  P = 10 0(kPa)  a) V tỉ lệ nghịch với P: PV= const PV 1 = PV 2 = Const ⇒ V2 = PV 50...

Ngày tải lên: 18/03/2016, 08:52

... +1 = ? A - Câu 10 ) B + C ( + ) *D 2( - 1) +1 10 = ? A 10 ( + 1) Câu 11 ) B 10 ( - 1) C ( - 1) *D ( + 1) 1 = ? A - Câu 12 ) B + C ( - ) *D 2( + 1) 1 Câu 9) B ài C âu 64a b = ? C âu 2) 27 a b = ... = - C x = D x = -9 + + 50 = ? A Câu 7) Gi tr ị B C 16 * D 2 b Câu ) A 2a b B a C 2a2 b *D a2 b 28a b = ? 10 = ? A 10 ( + 1) B 10 ( - 1) C ( +...

Ngày tải lên: 08/09/2013, 03:10

... 9,6.1 0-3 J C.Eđ = 12, 4.1 0-3 J D.Eđ = 14,8.1 0-3 J Câu 19: Một vật dao động điều hoà có phương trình x = sin ( π t + π /3 ) (cm) Li độ vận tốc vật lúc t = 0 ,25 s A cm -2 π √3 cm B cm 2 √3 cm C -1 ... dây, với tần số 3(Hz) Sau giây, chuyển động truyền 12m dọc theo dây Tìm bước sóng tạo thành dây A 2m B 1,5 m C 1,3 3m D.3m Câu 24 : Điều sau không nói truyền sóng học? A...

Ngày tải lên: 06/07/2014, 02:20

... 16 A plan has been for Vietnam to hold the Asia Sports Games at some point in the future A decided B remained C proposed D carried 17 my bag anywhere? I can’t ... you seen C Do you see D Can you see 18 My sister didn’t get the job she has all the necessary qualifications A therefore B although C however D despite 19 We went out for meal last night ... work for this company can send their...

Ngày tải lên: 26/07/2014, 11:21

... stolen C/ stole D/ was being stolen 22 ) She was the most effective speaker and her audience seemed to ……………… on her every word A/ catch B/ hold C/ cling D/ hang 23 ) Pauline worked in a local garage ... had had an umbrella, I would have got wet 28 ) Getting such a well-paid job is beyond my ……………………………… A/ expect B/ expected C/ expecting D/ expectation 29 ) Her pronunciation causes him a...

Ngày tải lên: 26/07/2014, 11:21

... helpful Besides, (38 ) _ pay is good and they let us eat (39 ) _ we want after work 35 a one b that part c them d then 36 a But b In contrast c However d On the contrary 37 a to work b working ... a part-time job as a waiter at a Japanese restaurant? Well, I finally got (35 ) _ Of course, I haven’t been working there long (36 ) , I can already tell it’s a wonderful place (37 ) ... successf...

Ngày tải lên: 26/07/2014, 11:21

... is in the air - I an enormous amount of traveling It is a fast life and (35) of work, but I like it and that is the only way for me Everything is tiring - music, traveling - but what can ... that has a mistake(1.5m) 46 .The computer games have been playing by many children since they appeared A B C D 47 Because a pain in his leg, he walked slowly A B C D 48 We met a deaf studen...

Ngày tải lên: 26/07/2014, 11:21

... a good job 39 many/school-leavers/little/had/of/the/job/knowledge/of/their/choice A Many school-leavers had little of knowledge the job of their choice B Many school-leavers had knowledge little ... the most up-to-date finding of the tops researchers in the field Exposure to such available knowledge and insights into the field can aid the student in becoming an expert as well 46 to ... lives...

Ngày tải lên: 26/07/2014, 11:21

... powerful hold over people’s minds It is an instrument of leisure, of information and- to a very limited extent- of culture It does not stop people reading newspapers or books, going to the cinema ... everybody A B C D 47 My father does rarely comes home until p.m A B C D 48 We often give gifts in a friend’s or a relative’s birthday A B C D 49 Do students in Vietnam work part-time while take...

Ngày tải lên: 26/07/2014, 11:21

... correct 46 The pool where we play water polo is long 1 .8 meters A B C D 47 Thousands of people was died in the tsunami hitting Asia in 2004 A B C D 48 The injured of natural disasters is always helped ... c It states that happiness and peace can not be bought with money d It has remained so popular 28 The writer of this passage a disagrees with the critics b does not enjoy Steinbeck’s .....

Ngày tải lên: 26/07/2014, 11:21

... about How-to books is not mentioned in the passage ? A How-to books are among the best sellers in the world B How-to books are useful in many ways C How-to books give advice on careers D How-to books ... of books on happiness, you may prefer books which give step-by-step instructions on how to redecorate or enlarge a house Why have How-to books become so popular ? Probably because life has be...

Ngày tải lên: 26/07/2014, 11:21

... 37B 38A 39B 40C 41B 42A 43B 48B 49A 50D SỞ GD & ĐT BÌNH THUẬN Đề Trắc Nghiệm ƠnThi Tốt Nghiệp TRƯỜNG PTTH BÙI THỊ XUÂN phút Năm học: 2008-2009 – Thời gian : 60 I/ Pick out the word whose underlined ... 43 D 44 B 45 A 46 B 47 A 48 A 49 B 50 A SỞ GIÁO DỤC VÀ ĐÀO TẠO BÌNH THU ẬN TRƯỜNG THPT B ÁN CƠNG CHU VĂN AN ĐỀ I/ Find the word that has its underlined part pronounced differently f...

Ngày tải lên: 08/08/2014, 21:22

... làm vônfram Biết công thoát electrôn vônfram 7,2 1 0-1 9J Chiếu vào catốt vônfram ánh sáng có bước sóng  = 0,180m Động cực đại electrôn quang điện bứt vônfram bao nhiêu? A.Eđmax = 10,6.1 0-1 9J ... ánh sáng trắng D.Vì ánh sáng trắng trời sóng không kết hợp ,nên chúng không bị tán sắc Câu 3 5: Chọn đáp án Trong thí nghiệm giao thoa ánh sáng , dùng ánh sáng trắn...

Ngày tải lên: 13/08/2014, 02:24

Ngày tải lên: 10/10/2014, 23:18