1、 1 ( ) ( 40 ) A 1 ( ) A B C D E BCE A B C D E 2 ( ) A B C D E ACD A B C D E 3 ) ( ) 2 A b c B a b C c d D a c E b d ADE V T pV T C p C 1 V T C 1 k p A B c d C a c D b d E 4 ) t T. ( ) A B C D E ab ABD A B C D E 3 B 5 )(1) ( ) A B C D E (2) U p0 75.0 cmHg. . 92492416 (1) A B C D E (2) p1 l1 p2 p0 l2.
2、 h p 1 l 1 p 2 l 2. cmHg p1 p0 (20.0 5.00) cmHg l 1 20.0 20.0 5.00 2cm p1l1 p 1l 1 p 1 144 cmHg 4 p 2 p 1 l 2 4.00 cm 20.0 5.00 2cm h p2l2 p 2l 2 h 9.42 cm (1)CDE (2)144 cmHg 9.42 cm 6 ( ) A B C D E (2) m1 2.50 kg S1 80.0 cm 2 m2 1.50 kg S2 40.0 cm 2 l 40.0 cm p 5Pa T 303 K l 2 T1 495 K g 10 m/s 2 .
3、 (1) A B C ( ) D E V1 5 V2 T2. V1 S1 l 2 S2 l l 2 V2 S2l p1 S1(p1 p) m1g m2g S2(p1 p) V1 T1 V2 T2 T2 330 K p1. p p T p1 T2 p 5Pa. (1)BCD 5Pa 7 ) ( ) A B C D E ABE A B C D E (2) ( ) T1. p0 V1 2.6 V1 0.5p0. 6 1.8T1 V V1 p0 0.5p0 0.5p0 2.6V1 V1 V T T1 T 1.2T1 1.8T1 T p2 0.5p0 P2 0.75p0 T1 p0 8 ) ( ) A B C D E ACE A B C D E (2) l 75 cm h 25 cm l1 36 cm. p 75 cmHg 92492417 7 x0 S p0 100 cmHg V0 l1S p0 50 cmHg V0 x0S p0V0 p0 V0 x0 72 cm x0 hl 75 cm x 75 cm x p1 100 cmHg V1 l1S p1 75 (75 x x mHg) V1 x S p1V1 p1 V1 x1 60 cm x2 60 cm( ) (75 60) cm 15 cm. 15 cm
