sustittbe k = -0.501359133 and t = 5 and solve for U is that it
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Sounds good to me. What do you get?
$\displaystyle U = 20 + (11 - 20)e^{(5)(-0.50)} $
Uh-huh. And the result is?
$\displaystyle U = 20 + (11 - 20)e^{-2.5} $ $\displaystyle U = 20 + (11 - 20)e^{-2.5} $ $\displaystyle U = 20 + (-9)0.0820 $ $\displaystyle U = 20 + -0.738 $ $\displaystyle U = 19.26200 $ is this it
Looks good to me.
And it makes sense, because it's a value closer to room temperature than the value you read off at 3 minutes. That is what you'd expect, right?
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