Question

6. A certain freezing process requires that room temperature be lowered from the rate of 8°C every hour. What will be the room temperature 15 hours process begins
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Answer 1

Initial temperature =40°C

Rate of change in temperature =5° C/hour

Time =10 hours

So, in 10 hours the temperature would be decreased by 10×5=50° C

Therefore, the final temperature =40−50=−10° C