Đáp án:
F=500N
Giải thích các bước giải:
P=5kW; AB=36Km, t=1h
công của lực kéo:\(A = P.t = {5.10^3}.60.60 = {18.10^6}J\)
Lực kéo:\[F = \frac{A}{{AB}} = \frac{{{{18.10}^6}}}{{{{36.10}^3}}} = 500N\]
G=(870-1.2).(870-2.3).(870-3.4)...(870-99.100)
Giải giúp mình với ạ!Phần c câu 1, phần c câu 2, phần c câu 3, phần b câu 4, câu 5 và câu 6 ạ
vì sao phương trình phản ứng là phương trình hóa hợp
I. Find ONE mistake in each of the following sentences and correct it. 1. When it stopped raining. I would go to see him. A B C D 2. You would miss the bus if you wouldn't hurry up. A B C D 3. How much would it be if I pay by cheque? A B C D 4. If I were you, I will go jogging every morning. A B C D 5. He should go to the concert if you gave him your ticket. A B C D 6. We might buy a larger house when we had more money. A B C D 7. Education has been severely effected by the war. A B C D 8. Unemployment is a major cause poverty. A B C D 9. They were accused of contaminate the minds of our young people. A B C D 10. He is showing these silent films to help illustrating his story of survival. A B C D 11. The photographs she takes are a vision record of her travels. A B C D 12. Constant exposure to noise pollution will lead in the loss of hearing. A B C D 13. Because of we turned on a lot of bulbs, our eyes got strained. A B C D 14. If he reads this article, I guess that he would never do any harms to environment any more. A B C 15. The local citizens would be very happy if they were supplied with a clean water A B C D 16. If the environment were not polluted, birds wouldn’t leave their habitats and plants would die. A B C D 17. The door will be unlock if you press the green button. A B C D 9. We’ll have a long way to walking if we run out to petrol here. A B C D 19. If someone offered to buy you one of those rings, which you would you choosing? A B C D 20. The flight may to be cancelled if the fog gets thick. A B C D
Gips mình bài 3 với ạ Mình vote 5 sao nha Em cần gấp huhu
l. A serious road accident happened. There was a traffic chaos yesterday. (CAUSED) ____________________________________________________________________ 2. I had to get the mop. I spilled my juice. (SINCE) ____________________________________________________________________ 3. He walked slowly. He has a bad leg. (BECAUSE OF ____________________________________________________________________ 4. A peacock will spread his feathers, he will attract a female. (SO) ____________________________________________________________________ 5. The cyclone has come. Many thousands of deaths. (RESULTED IN) ____________________________________________________________________ 6. Don't eat too much sugar. It creates health problems. (LEAD TO) ____________________________________________________________________ 7. The weather was bad. That's why our departure delayed (BECAUSE OF) ____________________________________________________________________ 8. There was damage to our property because of the fire. (RESULTED IN) ____________________________________________________________________ 9. They haven't reply our invitation so far. I think they are not coming. (SINCE) ____________________________________________________________________ 10. The road condition is poor. There has been several accidents. (CAUSED) ____________________________________________________________________
Giúp mk vớ nhé bài 1,2 ý cảm ơn cả nhà
Bài 1 a,B= 158[$\frac{12- \frac{12}{7} -\frac{12}{289} -\frac{12}{85} }{4-\frac{4}{7}- \frac{4}{289} - \frac{4}{85} }$ : $\frac{5 + \frac{5}{13} -\frac{5}{169} -\frac{5}{91} }{6+\frac{6}{13}- \frac{6}{169} - \frac{6}{91} }$ ] b,Cho abc là số tự nhiên có 3 chữ số .Tìm GTNN A=$\frac{abc}{a+b+c}$ (li_2k5;hangbich,vanh ơi )
Giải các phương trình. Giúp mk vs ạ.
Tìm các giá trị của m để phương trình sau tương đương : mx^2 - (m+1) * x+1=0 và (x-1)*(2x-1)=0 giải giùm mình nha hay thì mình cho 5 sao , please cảm ơn các bạn
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