College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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The temperature C of a fresh cup of coffee t minutes after it is poured is given by

C = 125e−0.03t + 67 degrees Fahrenheit.
 
(a) Make a graph of C versus t.
   
   
I answered ( a) correctly
 
(b) The coffee is cool enough to drink when its temperature is 145 degrees. When will the coffee be cool enough to drink? (Round your answer to two decimal places.)
 min

(c) What is the temperature of the coffee in the pot? (Note: We are assuming that the coffee pot is being kept hot and is the same temperature as the cup of coffee when it was poured. Round your answer to the nearest degree.)
 °F

(d) What is the temperature in the room where you are drinking the coffee? (Hint: If the coffee is left to cool a long time, it will reach room temperature. Round your answer to the nearest degree.)
 °F
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Compound X and compound Y are constitutional isomers with the molecular formula C5H10. Compound X possesses a carbon-carbon double bond in the trans configuration, while compound Y possesses a carbon-carbon double bond that is not stereoisomeric:

 

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Compound X and compound Y are constitutional isomers with the molecular formula C5H10. Compound X possesses a carbon-carbon double bond in the trans configuration, while compound Y possesses a carbon-carbon double bond that is not stereoisomeric:

 

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