A cup of coffee at boiling point temperature is brought to a room at 20°C. After five minutes, the temperature of coffee drops to half of its original temperature. Find the time it takes for the cup of coffee to cool down at a. 30°C. b. 25°C.

A cup of coffee at boiling point temperature is brought to a room at 20°C. After five minutes, the temperature of coffee drops to half of its original temperature. Find the time it takes for the cup of coffee to cool down at a. 30°C. b. 25°C.

College Algebra

1st Edition

ISBN:9781938168383

Author:Jay Abramson

Publisher:Jay Abramson

Chapter6: Exponential And Logarithmic Functions

Section6.7: Exponential And Logarithmic Models

Problem 17TI: A pitcher of water at 40 degrees Fahrenheit is placed into a 70 degree room. One hour later, the...

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Question

Differential Equation

Newton's Law of Cooling

Please give the step-by-step solution. Thank you!

A cup of coffee at boiling point temperature is brought to a room
at 20°C. After five minutes, the temperature of coffee drops to
half of its original temperature. Find the time it takes for the cup
of coffee to cool down at
a. 30°C.
b. 25°C.

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