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Two persons A and B are served with 150 gm of hot (90°C) tea in cups and they are provided with cold milk (15°C), separately, in a thermos flask. Mr. A immediately adds 50 gm of milk to his cup of tea and waits for five minutes before he starts sipping. Mr. B adds the same amount of milk to his cup after five minutes and they both start drinking simultaneously. Who drinks a hotter tea? The room temperature is given to be 25°C. (Assume that the specific heats of the tea, milk and mixture are the same and equal to unity. Also assume that the value of the cooling constant k is same for tea and the tea-milk mixture.)

Two persons A and B are served with 150 gm of hot (90°C) tea in cups and they are provided with cold milk (15°C), separately, in a thermos flask. Mr. A immediately adds 50 gm of milk to his cup of tea and waits for five minutes before he starts sipping. Mr. B adds the same amount of milk to his cup after five minutes and they both start drinking simultaneously. Who drinks a hotter tea? The room temperature is given to be 25°C. (Assume that the specific heats of the tea, milk and mixture are the same and equal to unity. Also assume that the value of the cooling constant k is same for tea and the tea-milk mixture.)

Algebra for College Students
Algebra for College Students
10th Edition
ISBN:9781285195780
Author:Jerome E. Kaufmann, Karen L. Schwitters
Publisher:Jerome E. Kaufmann, Karen L. Schwitters
Chapter1: Basic Concepts And Properties
Section1.CR: Review Problem Set
Problem 67CR
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Two persons A and B are served with 150 gm of hot (90°C) tea in cups and they are provided with cold milk (15°C), separately, in a thermos flask. Mr. A immediately adds 50 gm of milk to his cup of tea and waits for five minutes before he starts sipping. Mr. B adds the same amount of milk to his cup after five minutes and they both start drinking simultaneously. Who drinks a hotter tea? The room temperature is given to be 25°C. (Assume that the specific heats of the tea, milk and mixture are the same and equal to unity. Also assume that the value of the cooling constant k is same for tea and the tea-milk mixture.)
Transcribed Image Text:Two persons A and B are served with 150 gm of hot (90°C) tea in cups and they are provided with cold milk (15°C), separately, in a thermos flask. Mr. A immediately adds 50 gm of milk to his cup of tea and waits for five minutes before he starts sipping. Mr. B adds the same amount of milk to his cup after five minutes and they both start drinking simultaneously. Who drinks a hotter tea? The room temperature is given to be 25°C. (Assume that the specific heats of the tea, milk and mixture are the same and equal to unity. Also assume that the value of the cooling constant k is same for tea and the tea-milk mixture.)
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