Raquel stayed at McDonald's and ordered a cup of hot coffee. When the coffee was served at around 7:00AM, its temperature is 75 degree celsius. The temperature inside is maintained at 18 degree celsius. At around 7:15 AM, the temperature of the coffee dropped by 15 degrees. What is the temperature of the coffee at exactly 7:25 AM? If Raquel wants to drink the coffee when its temperature is 45 degree celsius, at what time will this happen?

University Physics Volume 2
18th Edition
ISBN:9781938168161
Author:OpenStax
Publisher:OpenStax
Chapter2: The Kinetic Theory Of Gases
Section: Chapter Questions
Problem 77AP: (a) Find the density in SI units of air at a pressure of 1.00 atm and a temperature of 20 , assuming...
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Raquel stayed at McDonald's and ordered a cup of hot coffee. When the coffee was served at around 7:00AM, its temperature is 75 degree celsius. The temperature inside is maintained at 18 degree celsius. At around 7:15 AM, the temperature of the coffee dropped by 15 degrees. What is the temperature of the coffee at exactly 7:25 AM? If Raquel wants to drink the coffee when its temperature is 45 degree celsius, at what time will this happen?

Raquel stayed at McDonald's and ordered a cup of hot coffee. When the coffee
was served at around 7:00AM, its temperature is 75 degree celsius. The
temperature inside is maintained at 18 degree celsius. At around 7:15 AM, the
temperature of the coffee dropped by 15 degrees. What is the temperature of the
coffee at exactly 7:25 AM? IF Raquel wants to drink the coffee when its
temperature is 45 degree celsius, at what time will this happen?
Transcribed Image Text:Raquel stayed at McDonald's and ordered a cup of hot coffee. When the coffee was served at around 7:00AM, its temperature is 75 degree celsius. The temperature inside is maintained at 18 degree celsius. At around 7:15 AM, the temperature of the coffee dropped by 15 degrees. What is the temperature of the coffee at exactly 7:25 AM? IF Raquel wants to drink the coffee when its temperature is 45 degree celsius, at what time will this happen?
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