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"The sum of the kinetic and potential energies of a system of objects

0 votes

February 26th, 2013 05:37
in College Physics A by blueeyes_11 (Carnegie Mellon University (PA), Medica)

"The sum of the kinetic and potential energies of a system of objects is conserved: "

"A. only when no external force acts on the objects

B. only when the objects move along closed paths

C. only when the work done by the resultant external force is zero

D. always

E. none of the above"

1 Answers
0 votes

March 9th, 2013 12:37
umeri (Institute of Company Secretaries of India - ICSI, Computer networks)
E. none of the above

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