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A metal bar is heated and then allowed to cool. Its temperature T (in C) is found to be T=20+50 e 0.35t, where t (in
A metal bar is heated and then allowed to cool. Its temperature T (in
C)
is found to be
T=20+50e0.35t,
where t (in min) is the time of cooling. Find the time rate of change of temperature after
15.0
min.
After
15.0
minutes, the time rate of change is__________
degrees per minute.
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