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On 2018/Jan/22, at 17:03, brian whatcott <firstname.lastname@example.org> wrote:
I expect I am missing something clever.... what's imaginary about a 10 N force?
Since I’m not veryfamiliar w/ not object forces, which I called imaginary.
I suppoe one can imbead a maged in the marble and then bring up another magnet — still have an object.
Or are you thinking of an extremely strong light source?
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