- #1
cubejunkies
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I received this problem recently from a friend, and I think I have the right answer but I'm not sure. I also might not have enough evidence to support my case very well. Here's the problem:
A student and his physics professor are discussing his grades at the campus coffee shop. They both order coffee, which the waitress pours and delivers, piping hot, to the table. The student immediately picks up the small pitcher of room temperature cream that is on the table and puts a fair amount into his coffee, just enough to bring it to the rim of the cup. The two continue their talk, neither touching their cups for 20 minutes.
Their conversation wraps up and the professor puts the same amount of cream into his coffee as the student. They both take a sip from their cups at the same time. Which person's coffee is hotter or are they the same temperature?
You can assume that the amount of coffee and cream in each cup is identical and that both cups were served at the same temperature.
My guess is that because the professor's cup was hotter for 20 minutes, it wasted more heat, and thus I believe that the student's cup is hotter.
This is a ridiculous question, I'm almost sure of it, but please, I really need to know if I'm right.
Thanks
Anthony
ps I bet this thread is in the wrong section too, but I'm still very new to this...
A student and his physics professor are discussing his grades at the campus coffee shop. They both order coffee, which the waitress pours and delivers, piping hot, to the table. The student immediately picks up the small pitcher of room temperature cream that is on the table and puts a fair amount into his coffee, just enough to bring it to the rim of the cup. The two continue their talk, neither touching their cups for 20 minutes.
Their conversation wraps up and the professor puts the same amount of cream into his coffee as the student. They both take a sip from their cups at the same time. Which person's coffee is hotter or are they the same temperature?
You can assume that the amount of coffee and cream in each cup is identical and that both cups were served at the same temperature.
My guess is that because the professor's cup was hotter for 20 minutes, it wasted more heat, and thus I believe that the student's cup is hotter.
This is a ridiculous question, I'm almost sure of it, but please, I really need to know if I'm right.
Thanks
Anthony
ps I bet this thread is in the wrong section too, but I'm still very new to this...