2. It takes 12 minutes for an object at 1000C to cool to 800C in a room at 50oC. HóW muCH IOngei Will It URC 3. A thermometer reading 100C is brought into a room where the temperature is 180C ; 1 minute later the thermometer reading is 140C. how long does it take until the reading becomes 160C. ature of the metal becomes 1900C. when

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