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Home Q & A Board Science-Related Homework Help Physics
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yncr yncr
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6 years ago
A book is placed on a chair. Then a videocassette is placed on the book. The floor exerts a normal force
 a. on all three. b. only on the book.
  c. only on the chair.
  d. upwards on the chair and downwards on the book.
  e. only on the objects that you have defined to be part of the system.
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yujenni16yujenni16
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6 years ago
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