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anonymous

  • one year ago

A hanging weight with a mass of m = 14.0 kg falls a distance of h = 8.1 m causing paddles to turn in a tank of water. If the mass of the water is mw = 0.5 kg, what is the maximum possible change in the temperature of the water?

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  1. anonymous
    • one year ago
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    Options: T = 5.74o C T = 0.019o C T = 0.53o C T = 0.68o C

  2. anonymous
    • one year ago
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    The weight has a reduction of potential energy as it falls. This potential energy change is given by what equation? Hint: think gravitational potential energy.

  3. anonymous
    • one year ago
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    dont know it

  4. anonymous
    • one year ago
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    m*9.8*h=111.32

  5. anonymous
    • one year ago
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    1111.32

  6. anonymous
    • one year ago
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    what class are you taking?

  7. anonymous
    • one year ago
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    i got it

  8. anonymous
    • one year ago
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    now what

  9. anonymous
    • one year ago
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    Right mgh

  10. anonymous
    • one year ago
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    If (and that is a big "if") all of that energy lost in the change in gravitational potential energy were somehow converted into heat energy to heat water, what equation would you use to relate a heat energy input to a change in temperature of the water?

  11. anonymous
    • one year ago
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    No thoughts?

  12. anonymous
    • one year ago
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    Have you studied thermodynamics?

  13. anonymous
    • one year ago
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    Does the equation:\[Q=mC \Delta T\] ring a bell?

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