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On a hot Saturday morning while people are working​ inside, the air conditioner keeps the temperature...

On a hot Saturday morning while people are working​ inside, the air conditioner keeps the temperature inside the building at 23°C. At noon the air conditioner is turned​ off, and the people go home. The temperature outside is a constant 33°C for the rest of the afternoon. If the time constant for the building is 4 ​hr, what will be the temperature inside the building at 3: 00 pm? At 6:00 P.M.​? When will the temperature inside the building reach 26C?

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