第12课时 大气压强 流体压强与流速的关系-2020版【致胜中考】初中物理总复习指导用书（人教版）

!!!!! !!!)*!qr@jk +,-. +,! !]^9º!ZÆ!ÒÓ!5#!JÓ!¦m!5#!_ #!67!"$!"!:; +,% !`a!b]!=²B!Z; +/01 2345 !!0 %!WÓ!$!&#)4!#) $!3!+!, !!%)*!stjk!urjkZuv@wx +,-. +,! !;/!²B!cdef7 +,% !1&#!1&!!!#!$4!#)!2�!Ñ!ÏÑ!=W!=W! W¾ +,$ !Ñ!Ó +/01 2345 !!Ó�¦!WÑ %!k!!## $!, !!$)*!l^ +,-. +,! !º!!ÓÇ!¦/g!.º!".º�!9,º!!�± $ò�±%!*".Í +,% !*".!*!"*#!hi!ÑÇ!jk`6�±_.6; /!!�,)k!5#!k`�±6±° +,$ !!$!#!+!+!$!#!+!$!# %!�<!�<!g'!;/!ÑÇ!lm!Ó +/01 2345 !!0!%!,!$!5#!9,º! +!$!%!9!$%%!!#4!#$67!"$!$$%%##:; )!AB!no;/ &!$!%+9!$%%#!+4!#$67!"$!$$%&9 !y#$!z_%&{!|#%& !!+)*!z!z} +,-. +,! !/!åN!/!åN!p°!.$!ä�!=qr +,% !PQ!ST!S!ù!T!ú!st!<!!#$ +/01 2345 !!*!%!* $!$!%!##9!$%%+#=!$$%!#< !!))*!({!~{!%&{ST�= +,-. +,! !ur! h! ä�!=! AB!;/!Ã�k#!12 g'!R#!g'!k# +,% !R#!g'!R#!CvN±wBåN6¾ë!ABR #!JÓ!g'!JÓ +,$ !g'!k#!JÓ!JÓ +,+ !èxh!=W!B!;/y!;/y!B!;/y!B B!;/y!B!;/y!;/y!B!B!;/y +/01 2345 !!$!%Óz{|zíÃ}g'~ß�Ó'ÉO«6¦/ß�Ó' L�YÑz{ÉO«6¦m'§lz{ÉO«6��E`' ��¦m��-+./ �'>?]^ÒÓz{�O«6FG« °�YѦm'��'Óz{�)����XY�Ó! $%%N±6Bh��g'�R#ÓÑQ�'Vg'JÓ# R#JÓ'N±6Bh�JÓ&â³{6g'=h�W6 ���'L�Yѳ{6Bh'��Yѳ{6�{åN òYѳ{v��@N6åN'����R ¡�! %!;/!12ûW $!ÓÇ!12y +!3 !!&)*!��!�� +,-. +,! !!��¤!åN!åN %!$!#!¢åN!#!$!¢/!+!+ +,% !JK! R!/£!B/2B/£+?/2?/£ .!3!+.%3% +,$ !��=B!AB!Æ£!%!.!+.%!.+ ! 4*!$+%5 $+45!/69º!q/!q/!/69º +,+ !q/!åN!q/ +/01 !!ËÌ_Í" %!!! " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " #5 $"# O+PQ $$ !!!!! -!åï�bHk.$@#'=C! )!¡»g¤©÷�Ä_Ô$åï7G�¶)>�ù� �b&ÊfYåï7GHu]è"&�¶)>�H �bù&=&è"$è&�b$�(åï7G�bH � *¯åïH["�í&Yè"&uV&åïH ["$�&�b$�! !#+,!5!f¥%Z[!Å>&*; �bkF þåï7G�bHÜ�!#'��%'�% #!%g¤g&Àåï7GH�b� ú-m* GM ¢l�åXH!!!!�°>! #+%m¬Pg¤©÷û½Ð&GM¢gHåïö: *!!!!#A�)�ÿ*X)¬ÿ*%! #*%ÀFKJY[+Å>åï7GH-'/$¢&E F[GM¢l�åXHk"âC/%C-&�8çÞ g¤EF[uÃH©÷&0j½uÎåï7GH� bÐ!!!!H�Úõ��! #/%ÀFKJY[+gÅ>åï7G=èH/'. $¢&EF[ G M¢l�åXHk"âC. !! !!C/#A�)$*)#*X)%*%&0�m¬ýþåï �bKåï!!!!í³! #-%a|²g¤R0[+Å>åï7G-'/'.'8 a)$¢�bö�H�$¢!!!!! !=>"!#!%ð}�%#9í\)(pq�æÏð} G&GrøA-s.�a�Þ't&-t.�Þ't Hu¸d�æÏ%ð}ßi&eS%)Qcè(.Mð }�ß&-t.�Þ't³�ß(#+%<¸�ßà�� |Xi&Grø�%.M+ãSgà.M(#*%Ád� Ä^c+kì.MAã%-'/��&ÿeÏGrø -t.�%Þ'tC/%C-&d�[[�J&j'Pß& ��Grø-s.�%Þ't^_õß&