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Thread: balloon help

  1. #1 balloon help 
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    A rubber balloon is rubbed against a wall and then sticks to the wall. This is because


    a. the balloon and the wall exchange charges through contact
    b. electrons hop back and forth between the balloon and the wall
    c. the balloon induces an opposite charge on the wall surface
    d. the balloon causes the formation of ions on the wall by using polarization


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  3. #2  
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    It is possible there is more than one acceptable answer. It is also possible that none of the choices truly answer the question because none of them mention anything about attractive forces. Or sticky stuff on the wall.

    Say, aren't you the chap who argues with his teacher?

    Me and a teacher had a disagreement about the answer. I said it could be multiple and she informed me that there is only one correct answer.
    My advice to you is to learn how to take tests. All sorts of tests! Always choose the best answer and don't try to outsmart or outthink anyone.

    When you become a physics teacher you will make up your own ambiguous tests and grade them accordingly.

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  4. #3  
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    this is just a review packet not a test, so i don't know the answer. i was thinking c or d. what would you suggest as the best answer?
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  5. #4  
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    and yah that was me
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  6. #5  
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    I would choose (c).

    Note that this answer is faulty because it says nothing about opposite forces attract. However, it is the best of a bad lot.


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  7. #6  
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    Ambient radiation presses the balloon to the wall.

    Sincerely,


    William McCormick
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