Question

A certain freezing process requires that room temperature be lowered from 40 degree Celsius at the rate of 5 degree Celsius every hour. What will be the room temperature 10 hours after the process begins? (Answer step by step).

Answer 1

Initial Temperature = 40°C
Rate of cooling = 5°C / hour
Time = 10 hours

Temperature reduced = Rate of cooling * Time
                                   = 5 * 10
                                   = 50° C

∴Final Temperature = 40 - 50 = - 10° C

Answer 2

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