Question

6. A certain freezing process requires that room temperature be lowered from 40°C at the rate of 5°Cevery hour. What will be the room temperature 10 hours after the process begins? Answer if u are the brainliest​

Answer 1

Rate of temperature decrease = 5*C/hour

Time duration = 10 hours

So total temperature decrease = 5*C/hour × 10 hours = 50*C

Temperature drops by 50* C

At the start of the process, temperature was 40*C

So the ending temperature will be = Start temperature - Change in Temperature

= 40*C - 50*C

= -10*C

Thus, the temperature after 10 hours of the process will be -10*C.

Hope this helped!

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Answer 2

Answer:

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

Step-by-step explanation: