A certain freezing process requires the room temperature to be lowered from 40°C to 5°C per hour. What will be the room temperature 12 hours after the process begins?
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A certain freezing process requires the room temperature to be lowered from 40°C to 5°C per hour. What will be the room temperature 12 hours after the process begins?
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Answer:
So, in 10 hours the temperature would be decreased by 10*5 = 50°C.
Step-by-step explanation:
Let us assume that the lowered temperature as negative,
Initial temperature = 40oC
Change in temperature per hour = -5oC
Change in temperature after 10 hours = (-5) × 10 = -50oC
∴The final room temperature after 10 hours of freezing process = 40oC + (-50oC)
= -10oC
The room temperature 10 hours after the process begins= -10oC
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