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anonymous

  • 5 years ago

An object is placed in 68 F room. write a differentiatal equation for H , the temperature of the object at time t.

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  1. anonymous
    • 5 years ago
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    \[dH/dt = -k(H-68)\]

  2. anonymous
    • 5 years ago
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    why is it a negative k

  3. anonymous
    • 5 years ago
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    Well, the negative indicates that the rate of change is going down: The closer you get to 68 degrees, the more slowly you change temperature. k is just a constant :D

  4. anonymous
    • 5 years ago
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    is it safe to say that when we are dealing with temperature it will bee a negative k

  5. anonymous
    • 5 years ago
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    No. It HAS TO BE A NEGATIVE K. This is RATE, not the actual temperature.

  6. anonymous
    • 5 years ago
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    okay . so i am trying to the problem but the differential equation has been written like this dH/dt=k(68−H)

  7. anonymous
    • 5 years ago
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    do you know why?

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spraguer (Moderator)
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