1. 2553
2
9 2552 12.30 –15.00 .
...…………………...................... ......…………………..................
.........………………………..…......... ...................………..........
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1. 6 7 ( ) 80
2.
3.
4.
5.
1. ( )
2.
900 kg/m3
0-100 o
C 1000 kg/m3
, c 1000 kJ/kg/o
C
, c 1 kJ/kg/o
C
, L 334 kJ/kg
, g 10 m/s2
5 x 1018
kg
3.6 x 1014
m2
Q = mL
Q = mc t