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2010?RһģijWƼdȤСMÏUfƷһךӋһѾƿвһɶ_ڵIJܣ܃һLȿɺԵˮyӿ̎ϞܷƿˮƽDʾ֪ԓbܷwwe480cm3܃ȲMe0.4cm2ƿЧLȞ48cm؞7Crˮy̎ƿλã
1ԓӋܜyߚأ
2Oˮyƿ̎ƄӵҶ˵^ܷw3J@һ^ԓwă׃׃˶٣֪≺1l05Pa
1܃ɶ_ˮyƄӕrܷĚwlȉ׃ˮy_ܿڕryߣ_˶⣮
2ɟWһɡU=W+Qşᣮ
⣺1ˮy_ܿڕryߣOT2˕rwweV2
BT1=273+7k=280kV1=480cm3δBV2=480+480.4=499.2cm3
ɸ_˶ɵã
V1
T1
=
V2
T2

480
280
=
499.4
T2

ãT2=291.2K
2ˮyƄ^猦w
W=-P0SLTlxl00.4104810=-1.92J
ɟWһɵã׃飺
U=W+Q=-1.92J+3J=1.08Jwӣ
𣺣1ԓӋܜyߚ291.2K
2wӣ1.08J
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