A cup of coffee is made with boiling water at a temperature of 100 oC, in a room at temperature 20 •C. After two minutes it has cooled to 80 °C. (a)What is its temperature after five minutes? (b) When will the coffee drop to 40 °C and taste cold?
A cup of coffee is made with boiling water at a temperature of 100 oC, in a room at temperature 20 •C. After two minutes it has cooled to 80 °C. (a)What is its temperature after five minutes? (b) When will the coffee drop to 40 °C and taste cold?
Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter47: Applications Of Formulas To Cutting Speed, Revolutions Per Minute, And Cutting Time
Section: Chapter Questions
Problem 33A
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