Physics, asked by manijoshi123, 1 year ago

pencil with hot food cools from 94 degree Celsius to 86 degree Celsius in 2 minute when the room temperature is at 28 degree Celsius how long will it take to cool from 71 degree Celsius to 69 degree Celsius​

Answers

Answered by sakshi3152
2

94-86=8 degree Celsius.

From the statement, 8 degree takes 2 minutes to Cool down.

71-69=2 degree Celsius.

As the Room temperature is 28 degree.

Then total temp. is 28+2=30 degree Celsius.

As 8 degree Celsius take 2 minutes.

Then, 8 degree = 2 minutes

Multiplying on both sides.

8 degree ×3 =2 min. ×3

24 degree = 6 minutes

As, 2 min. =8 degree

1 min. =4 degree

Then, 28 degree = (6+1=7) minutes

30 degree = 7 minutes nd 30 seconds. (7:30 minutes)

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