Question

a certain freezing process require the room temperature be lower from 45 Celsius at the six Celsius every hour... what will be the room temperature nine hours after the process begin

Answer 1

initial temperature =45°c
rate of change in temperature =6°c per hour
time = 19 hrs
so in 9 hrs the temperature decreased by
9 *6 = 56°c
so the final temperature =56°-45°=11°

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Answer 2

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Answer.

Given that,.
room temperature is 40° C

It is also given that the room temperature lowers at the rate of 5° C
After one hour the temperature becomes (40 – 5) = 35° C
After two hours the temperature becomes (35 – 5) = 30° C

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