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tangylpt123
2 năm trước
Cho 3 điện trở R1= 24 ôm R2= 15 ôm và điện trở R3 mắc song song vào mạch có hiệu điện thế 6V thấy dòng điện chạy qua mạch là 1A. Tính điện trở của R3
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Exercise 5: Read the situations and use the words in brackets to write sentences with must have and can't have. Eg: 1. The phone rang but I didn't hear it (I/asleep). I must have been asleep . 2. Jane walked past me without speaking, (she/see/me). She can’t have seen me 3. The jacket you bought is very good quality, (it/very expensive) - ………………………………………………………………………….. 4. I haven't seen the people the next door for ages, (They/go away) - ………………………………………………………………………….. 5. I cant find my umbrella, (Weave/it in the restaurant last night) - ………………………………………………………………………….. 6. Don passed the exam without studying for It (me exam / very difficult) - ………………………………………………………………………….. 7. She knew everything about our plans, (she/ listen / to our conversation) - ………………………………………………………………………….. 8. Fiona did the opposite of what I asked her to do. (she/understand/what I said) - ………………………………………………………………………….. 9. When I woke up this morning, the light was on. (I forget/to turn/ it off) - ………………………………………………………………………….. 10. The lights were red but the car didn't stop, (the driver/see/the red light) - ………………………………………………………………………….. 11. I was woken up in the middle of the night by the noise next door (the neighbours/have/ a party) - …………………………………………………………………………..

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