給我8分鐘，我去拯救世界.不到一杯咖啡冷卻的時(shí)間.為什么是8？因?yàn)椋?..
A soldier wakes up in someone else's body and discovers he's part of an experimental government program to find the bomber of a commuter train within 8 minutes.
U.S. Army?pilot Captain Colter Stevens wakes up on a?Metra?commuter train?going into?Chicago. Stevens is disoriented, as his last memory was of flying a mission in?Afghanistan.?
However, to the world around him – including his friend Christina Warren and his reflection in the train's windows and mirrors – he appears to be a different man: a school teacher named Sean Fentress. As he expresses his confusion to Christina, the train explodes while passing by another train, killing everyone aboard.
....
Stevens: Can I have a cup of coffee for a moment?
-Christina:?Well, how long does it take you to get a cup of coffee?
Stevens:Well...
Suppose the temperature is...
室內(nèi)環(huán)境溫度 ambinet temperature = 20 攝氏度
咖啡沖泡溫度 initial temperature =T0 90 攝氏度
你喜歡 飲用的咖啡溫度 =??60 攝氏度
水的衰減常數(shù) 沒有查，先不妨假設(shè) k=0.2
then time elapaed=?
t=2.2 minutes?
so what do U?wanna do today?
