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martittx3

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Dynamika : Oblicz przyspieszenie ukladu przedstawionego na rysunku (załącznik).Przyjac m=4kg , M=8kg, F1=20N , F2=8N.Obliczyc takze naciag linki laczacej oba klocki.Tarcie pominąć.Proszę o pomoc, dzięki !
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Dynamika :Pocisk o masie 10g wystrzelony z pistoletu trafia w drewnianą belkę z szybkoscią 300 m/s i wbija sie na glebokosc s=5cm. obliczyc :a) wartosc sily dzialajacej na pociskb) czas hamowania pocisku w belce.Przyjac ze ruch pocisku jest jednostajnie opozniony.Dzięki !
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Przedstaw w postaci potęgi : w załączniku .
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Rownania z wartoscia bezwzgledna : 3 - | 6 - x | + | 2x - 12 | = 9czy to bedzie ze | 6 - x | + | 2x - 12 | = - 6czyli bez rozwiazania bo wynik wartosci bezwglednej nie moze byc ujemny ???
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PAST SIMPLE - PAST CONTINUOUSIV. Uzupetnij zdania w tekscie czasownikami w poprawnej formie.Al. is one of my school friends, like him although he is rather strange. He loves telling stories about UFO and aliens. He says he .............................. (meet) them some timeago. But let me begin from the start.It.............................. (be) a few months ago - he says - and he .............................. (go) out for a walk near his home. It was about nine p.m. and Al .............................. (stroll) alone in the village. After several minutes he .............................. (notice) that he .............................. (be) quite a long way fromhis house. And then it all .............................. (happen). A silver flying saucer.............................. (land) in front of him and two green creatures .............................. (come) outof it. They.............................. (invite) him to come into their saucer and .............................. (ask) him questions about life on Earth. While Al .............................. (tell) them about our planet, the creatures .............................. (do) some strange experiments. When they .............................. (finish) they .............................. (let) Al go back. After coming back home Al .............................. (not remember) anything. The memories of this unusual visit only .............................. (appear) after a few days.Many people still do not believe in Al's stories and say that they are unreal.
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I. Uzupetnij zdania czasownikami w poprawnej formie. 1. Mr Taylor.............................. (buy) his car several years ago. 2. Yesterday at seven a.m. we .............................. (still / sleep). 3. When you came in, my mother.............................. (make) a cake. 4.1.............................. (feel) bad all day yesterday. 5. The plane from Boston .............................. (land) an hour ago. 6. You were watching TV while I.............................. (study) hard. 7. In 1965, my grandfather.............................. (work) on a farm. 8. The professor was in his room at five. He .............................. (read) something. 9. Cindy.............................. (wash) her hair when she heard someone knocking. - 10. Jim was walking alone, when we .............................. (meet) him in the park. 11. Last Saturday we .............................. (drive) to Humpton to visit our aunt. 12.I.............................. (not know) that the printer was broken. 13. While I was waiting for you, I.............................. (listen) to the news on TV. 14............................... (the Parsons / move) to New York last October? 15. The policemen stopped us when we .............................. (cross) the street. 16. That car.............................. (not go) fast when it crashed against the tree. 17. Mr and Mrs Robson .............................. (pick) a lot of mushrooms here last time. 18. The scouts .............................. (collect) firewood from seven till nine. 19. What.............................. (they/tell) you in the office when you phoned them? 20. It.............................. (not rain) when we went out.
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Przedstaw na osi liczbowej zbiór tych liczb rzeczywistych , które spełniają następującą implikację formy zdaniowej : x < 1 => x > 0 ???
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