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stepromero01
17.09.2019 •
Mathematics
Using newton’s cooling model, what will the temperature of a cup of hot tea be 2 hours after it is poured if its initial temperature is 200°f, the surrounding temperature is 70°f, and the value for k is 0.6?
a.130
b.109.16
c.109.76
d.71.35
e.60
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Ответ:
ln(T-Ts) = ln(T0-Ts) - kt
where
T is the final temperature
T0 is the initial temperature
Ts is the temperature of the surroundings
t is the time
k is a constant
Substituting the values:
ln(T-70) = ln(200-70) - (0.6)(2)
T = 109.16°F
The answer is B.
Ответ:
If you are talking about 2 D geometry, then the intersection of plane A and line m is the LINE m