... mghA =10. 10.3= 300J A + Tại mặt đất hO = Wt0 = mgh0 = + Tại đáy giếng hB = -5m 3m WtB = mghB = -10. 10.5= - 500J b/ Lấy mốc đáy giếng B + Tại độ cao 3m so mặt đất hA = 8m WtA = mghA = 10. 10.8=800J ... nằm ngang A=F.S=500 .10= 5000J Theo định lí động mv2 − 0(v1 = 0) 2 A 2.5000 A= mv ⇒ v2 = = = 100 m 100 ⇒ v2 = 10m / s b.Nếu F hợp với phương ngang góc α A = Fs cos α = 500 .10. 0,8 = 4000 J Wd2 − ... 0,04.1500 .10= 600N - Độ lớn lực kéo là: Fk = Fms + ma = 1350N Công lực: - AP = AN = (vì cos 900 =0) - A Fk = Fk s cos α =1350 .100 .cos0o =135 .103 J - Afms = Fms s.cos1800 =600 .100 .cos1800 = - 60 .103 J...
... nào? b) So sánh diện tích hai tam giác DIB EIC? Bài 3: Một thư viện có 100 00 sách, sau năm số sách thư viện lại tăng thêm 25 ( 100 so với số sách năm liền trước) Hỏi sau năm tổng số sách thư viện ... ấm cung Bài Tìm 15 thành ngữ, tục ngữ nói đạo đức lối sông lành mạnh, tốt đẹp người Việt Nam Bài10Viết lại 15 câu tục ngữ hay ca dao có nội dung khuyên bảo vế ăn mặc , đứng, nói Bài 11 Tìm 15 ... có đỉnh A, viết tên tam giác đó? b) Hãy tính diệntích tam giác ABC, biết diện tích tam giác BEC= 100 cm c) Kéo dài BE cắt AC N, chứng tỏ: AN= NC ...
... was developing as a formal, organized movement in the (8) _ world The largest early program in the U.S., the Lyceum, (9) _ (1826) in Massachusetts by Josiah Holbrook, was a local (10) ... five and arrive in the field at exactly 30 A 10 minutes B 15 minutes C 20 minutes D 30 minutes 4/ I continue to work from a quarter past eight till 10. 30 A keep away B keep back C keep down D ... language impairments; mental retardation and (9) _ developmental disorders; serious emotional disturbance; and specific learning disorders, (10) _ memory disorders Other disabilities include...
... He (teach) in this school before he (leave) for England 10 She (win) the gold medal in 1986 VIII Give the right forms of the verbs ... our work I (wait) here until you (come) back tomorrow 10 I (send) you some postcards as soon as I (arrive) in London IX Give the ... house by June next year We (start) our plan next week 10 I (give) her your letter when I (see) her tomorrow ...
... very cold now It (rain) much in summer It (rain) now 10 Daisy (cook) some food in the kitchen at present She always (cook) in the morning ... yet Mary (lose) her hat and she (look) for it until now 10 I (see) that film several times because I like it ...
... who (smoke) there? Mrs Green always (go) to work by bus 10 We (be) from French We (be) there for twenty years 11 That house (belong) ... (teach) English in this school since he (graduate) from the university in 1986 10 How long you (learn) English? ...
... I (be) very tired because I (work) all day yesterday 10 He (sit) in a cafe when I (see) him VI Give the right forms of the verbs ... bath, he (go) to bed What (be) he when he (be) young? 10 It was the first time I (ever, see) such a beautiful girl ...
... the manager (return) Don't leave until you (see) her 10 The brown (do) their housework when you (come) next Sunday XI Supply the ... The Browns (live) in Paris for years when the second World War (break) down 10 Last month I (be) in the hospital for ten days 11 Don't call me in the afternoon...
... provided that you bring it back 15 English 10 Period 10 LESSON 10: EXERCISES (IF SENTENCES) I/ Delete the incorrect verb form I’ll send/ send you some ... ……………………………………………………………….……………… 10 The students don’t play video games on the weekend ……………………………………………………………….……………… 11 They believed that he went abroad to study English ……………………………………………………………….……………… English 10 LESSON ... ……………………………………………………………………………………………………………….……………………………… 10 Do you know the policeman? He is coming toward us ………………………………………………….…………………………… English 10 Period LESSON 9: CONDITIONAL SENTENCES (IF SENTENCES)...
... though) …………………………………………………………………………… 10 He ate the chocolate cake even though he is on a diet (inspite of) …………………………………………………………………………… English 10 Period 10 LESSON 10: REPORTED SPEECH (INDIRECT SPEECH) ... those these 10 there 10 here Ex: He said to me, “Why did you go with her father last week?” He asked me why I had gone with her father the week before S + asked + O + wh- + S + V… English 10 Period ... 1990 …………………………………………………………………………… 10 He was a doctor in that hospital …………………………………………………………………………… -English 10 Period LESSON 8: WH - QUESTIONS...
... was developing as a formal, organized movement in the (8) _ world The largest early program in the U.S., the Lyceum, (9) _ (1826) in Massachusetts by Josiah Holbrook, was a local (10) ... five and arrive in the field at exactly 5.30 A 10 minutes B 15 minutes C 20 minutes D 30 minutes 4/ I continue to work from a quarter past eight till 10. 30 A keep away B keep back C keep down D ... language impairments; mental retardation and (9) _ developmental disorders; serious emotional disturbance; and specific learning disorders, (10) _ memory disorders Other disabilities include...