Mathematics, 15.04.2020 22:09, hchvvhhv

I got a Guinness can whose temperature is 21^(circ)C. To enjoy it cold at the perfect temperature of 9^(circ) C, I set my refrigerator to 0^(circ)C. The temperature T(t) of the can at time t measured in seconds satisfies Newton's Cooling Law equation: [dT]/[dt] =-.0001 T. How long will it take for the can to cool off to 9^(circ) C?

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I got a Guinness can whose temperature is 21^(circ)C. To enjoy it cold at the perfect temperature of...