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anonymous

  • one year ago

Which of these is the law of conservation of energy? A. The total kinetic energy in any closed system is constant. B. The total mechanical energy in any closed system is constant if there is no friction acting. C. The total energy in any closed system is constant. D. Momentum is always conserved, but kinetic energy is not necessarily conserved.

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  1. Michele_Laino
    • one year ago
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    I'm pondering...

  2. anonymous
    • one year ago
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    ok!

  3. Michele_Laino
    • one year ago
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    a closed system is a system which is able to exchange only energy with the surrounding environment.

  4. anonymous
    • one year ago
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    so our solution is option C?

  5. Michele_Laino
    • one year ago
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    no, since the energy can change, inside a closed system

  6. anonymous
    • one year ago
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    ohh i am not sure then... choice D ? :/

  7. Michele_Laino
    • one year ago
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    that's right!

  8. anonymous
    • one year ago
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    yay! thank you!

  9. Michele_Laino
    • one year ago
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    :)

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