Question
a body cools from 60 degrees to 40 degrees in 7 min. what will be its temperature after 7 min?
Answers
bobpursley
newtons law of cooling
Tf=ti*e^k*time
40=60*e^k*7
ln 40/60 = 7k
k= 1/7 * ln(2/3)=-0.058
Tf=40(e^(-.058*7)=26.6
Tf=ti*e^k*time
40=60*e^k*7
ln 40/60 = 7k
k= 1/7 * ln(2/3)=-0.058
Tf=40(e^(-.058*7)=26.6