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    I am trying to understand the question and I know that the first two statements are correct but am confused why the third statement however is wrong.

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    (Original post by nwmyname)
    I am trying to understand the question and I know that the first two statements are correct but am confused why the third statement however is wrong.

    Image is attached.
    I think it is because if a material does not obey Hooke's Law (force poportional to extension) then stress is not proportional to strain and therefore the Young Modulus can change.
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    (Original post by nwmyname)
    I am trying to understand the question and I know that the first two statements are correct but am confused why the third statement however is wrong.

    Image is attached.


    They're all true.
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    It's not a ratio.A ratio has no units while young's modulus does.
 
 
 
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