[Physic] Heat 要test
The resistance of an alloy wire is 25 when it is placed in a cup of melting ice. At room temperatureof 28(temp),
the resistance is 38.If the wire is put in boiling water, what will be the resistance
A:28
B:46
C71
D152
[ 本帖最後由 鍾倩怡 於 2006-11-10 11:29 PM 編輯 ]