November 2018 1 28 Report

Do probówki wrzucono niewielki odważnik, aby po zanurzeniu w wodzie pływała w pozycji pionowej. Naciskając palcem zwiększono jej głębokość zanurzenia o x i puszczono. Probówka wykonuje drgania. Masa probówki wraz z odważnikiem m=20g, pole jej poprzecznego przekroju S= 1cm²; gęstość wody ρ=10³ kg/m³.

a) wykaż (pomijając opór wody), ze probówka wykonuje drgania harmoniczne;

b) oblicz współczynnik proporcjonalności k

c) oblicz okres drgań


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Przepisz dania stosując okres warunkowy II lun III:1) I took the newspaper because I didn't know that you were reading it. If I ...........................................................................................................................2) I shouldn;t have drunk so much. I felt terrible next day. I wouldn't ..............................................................................................................3) He doesn't learn much. He gets poor marks.If he ...............................................................................................................4) She feels lonely. She should make new friends.If she .................................................................................................................5) Tom paid a fine. He lit a cigarette in a non-smoking compartment.Tom wouldn't ....................................................................................6) They weren't ready. They started too late. If they ............................................................7) I cannot buy a new flat. I don't earn much enough.If I ...........................................................................8) She didn't give me a prescription. I didn't ask for it.She would ..............................................................9) The air is polluted. The factories emit toxic fumes.The air ....................................................................10) Your food goes stale. You don't keep it in your refrigerator. If you...................................................................................Z GÓRY DZIĘKUJĘ ZA ODP.
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