pls, help.. i'm confuse... thanks
2007-10-09 03:09:05 · 4 answers · asked by jhenleen 1 in Science & Mathematics ➔ Physics
false, most of the heat leaves as vapor.
2007-10-09 04:06:57 · answer #1 · answered by Purple i 4 · 0⤊ 0⤋
False.
When you pour hot coffee into a mug, there will be a sudden drop in temperature as heat is transferred from the coffee into the mug. As the mug heats up, the rate of transfer decreases.
Two other ways heat is lost are:
Evaporation of the coffee. That's related to the "steam" you see coming off the coffee in cold weather. It cools the coffee just like evaporation of sweat cools you on a hot day. The "steam" is not technically steam, it is condensed water vapor similar to a cloud.
Transfer of heat to the air by conduction and convection. The coffee warms the air above it.
2007-10-09 10:47:07 · answer #2 · answered by Stephen P 7 · 1⤊ 0⤋
false, like the last guy said the heat will be mainly transferred to the cooler air above it along with some moisture, also out of the heat that does hit the cup some of that is reradiated out and not held by the cup anymore
2007-10-09 10:38:38 · answer #3 · answered by Anonymous · 0⤊ 0⤋
False...much of the heat is transferred to the cooler air above the liquid.
2007-10-09 10:15:55 · answer #4 · answered by Jolly 7 · 1⤊ 1⤋