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Here's an easy one for those itching for a physics teaser.
A waitress puts two cups of coffee down on a table for two men. The first man adds some cream and lets the coffee sit for two minutes before drinking the coffee. The second man waits two minutes before adding the cream and drinking the coffee. All else being equal, which coffee will be hotter at the time the two men take a drink?
I got this from RM.
Thursday, May 04, 2006 at 19:19:53 (UTC)
My guess is the first dude's coffee will be hotter after two minutes. Highlight for reasoning:[The greater the difference of temperatures between objects, the faster the heat transfers. So the first man is slowing that heat transfer down by cooling his coffee early, whereas the second man's coffee will cool faster while uncreamed.]
Hwan
Thursday, May 04, 2006 at 20:15:29 (UTC)
Correct!
QYV
Thursday, May 04, 2006 at 20:22:08 (UTC)
yay.. oh, and I too love ING.. they're awesome. i wish they offered a chequing account.
Hwan
Thursday, May 04, 2006 at 20:33:30 (UTC)
I'm glad I was able to do that puzzle.
Karen
Thursday, May 04, 2006 at 21:05:18 (UTC)
whoa! why isn't my comment hidden/black anymore? anyway, yeah, i too noticed the need for a spoiler text modifier but neglected to mention it.
Hwan
Friday, May 05, 2006 at 03:28:16 (UTC)
Whoops, you'll need to refresh the page so that the new style sheet is uploaded. My bad!
QYV