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      Praca, moc i energia on QuizRevolution


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      GosiaPZ Quiz Channel

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      Newest Quiz: Praca, moc i energia

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      Praca, moc i energia
      Question
      1/7
      Praca, moc i energia
      Points for Question
      100
      My Score
      0
      Hi Score
      700
      Jeżeli wartość prędkości zmaleje dwa razy, to jej energia kinetyczna:
      Wrong
       of players answered correctly.
      • zmaleje 1 raz

      • zmaleje 2 razy

      • zmaleje 4 razy

      • wzrośnie 4 razy

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      Your final score is: 0 out of 700
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      Comments:
      1. Jeżeli wartość prędkości zmaleje dwa razy, to jej energia kinetyczna:
        1. zmaleje 1 raz
        2. zmaleje 2 razy
        3. zmaleje 4 razy
        4. wzrośnie 4 razy
      2. Energia mechaniczna swobodnie spadającego ciała na ziemię
        1. maleje
        2. rośnie
        3. najpierw maleje potem rośnie
        4. nie zmienia sie
      3. 1 kW jest równy
        1. 10 W
        2. 100 W
        3. 1000 W
        4. 10 J
      4. Silnik wykonuje pracę 200 J w ciągu 5 s. Średnia moc tego silnika wynosi:
        1. 1000 W
        2. 40 kW
        3. 40 W
        4. 100 W
      5. Jednostką pracy w układzie SI jest
        1. wat
        2. dżul
        3. kilogram
        4. niuton
      6. Pracę wykonuje siła
        1. sportowca, który trzyma sztangę na wyciągnietych w górę ręka
        2. robotnika, który pcha wózek z cegłami
        3. matki, która trzyma za rekę dziecko
        4. ucznia, który siedzi nieruchomo na krześle
      7. Praca siły podnoszącej ciało o masie 2 kg na wysokość 6 m jest równa
        1. 6 J
        2. 2 J
        3. 12 J
        4. 120 J
      Tags: education , math , fizyka , praca , moc

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