Mathematics, 14.03.2020 17:53 charisaramsey
A piece of metal is heated to 428°C before it is left to cool. The temperature of the metal falls at a rate of 23°C per minute for the first 3 minutes, at a rate of 15°C per minute for the next 15 minutes and then at a rate of 8°C per minute until it reaches room temperature of 25°C. What will be the temperature of the metal after 9 minutes, and what will be the time needed for the metal to reach a temperature of 25°C ?
Answers: 1
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A piece of metal is heated to 428°C before it is left to cool. The temperature of the metal falls at...
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