Answered: After heating up in a teapot, a cup of…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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After heating up in a teapot, a cup of hot water is poured at a temperature of 209∘209∘F. The cup sits to cool in a room at a temperature of 68∘68∘F. Newton's Law of Cooling explains that the temperature of the cup of water will decrease proportionally to the difference between the temperature of the water and the temperature of the room, as given by the formula below:

�=��+(�0−��)�−��T=Ta+(T0−Ta)e−kt

��=Ta= the temperature surrounding the object
�0=T0= the initial temperature of the object
�=t= the time in minutes
�=T= the temperature of the object after �t minutes
�=k= decay constant

The cup of water reaches the temperature of 186∘186∘F after 2 minutes. Using this information, find the value of �k, to the nearest thousandth. Use the resulting equation to determine the Fahrenheit temperature of the cup of water, to the nearest degree, after 5 minutes.

Enter only the final temperature into the input box.

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