16£®»Ø´ðÏÂÁÐÎÊÌ⣺
£¨1£©ÔÚÈÈ»ú¹¤×÷Ëù½øÐеÄÄÜÁ¿×ª»¯¹ý³ÌÖУ¬µÃµ½µÄÓÐÓù¦ÄÜÁ¿Ð¡ÓÚ£¨Ñ¡ÌСÓÚ¡±¡¢¡°´óÓÚ¡±»ò¡°µÈÓÚ¡±£©È¼ÁÏÔÚÆû¸×ÖÐȼÉÕËùÊͷŵÄÄÜÁ¿£®
£¨2£©Ì«ÑôÄÜÈÈË®Æ÷ÄÚÊ¢ÓÐ103ǧ¿Ë25¡æµÄË®£¬ÔÚÑô¹âÕÕÉäÏÂË®ÎÂÉý¸ßµ½55¡æ£¬ÔòË®ÎüÊÕµÄÈÈÁ¿Îª1.26¡Á108 ½¹£®[ÒÑ֪ˮµÄ±ÈÈÈ£ºcË®=4.2¡Ál03½¹/£¨Ç§¿Ë•¡æ£©]
£¨3£©ÔÚ1´óÆøѹÏÂË®µÄ·ÐµãÊÇ100%£®Èç¹ûÆøѹÔö´ó£¬·ÐµãÒ²»áÉý¸ß£¬¼ÒÓÃÆøѹ¹ø¾ÍÊÇÓ¦ÓÃÕâ¸öÔ­ÀíÉè¼ÆµÄ£®ÒÑ֪ˮµÄ·Ðµã¸úÆøѹµÄ¹ØϵÈçͼËùʾ£®ÏÖ²âµÃijÆøѹ¹ø¸Ç³öÆø¿×µÄÖ±¾¶Îª4ºÁÃ×£¬Ñ¹ÔÚ³öÆø¿×ÉϵļÓѹ·§ÖÊÁ¿Îª80¿Ë£®Çëͨ¹ýͼÏóÍƶϣºÓøÃÆøѹ¹øÉÕË®£¬Ë®ÎÂ×î¸ß¿ÉÒÔ´ïµ½115¡æ£®£¨ÒÑÖª£º1´óÆøѹµÈÓÚ1.0¡Á105ÅÁ£©

·ÖÎö £¨1£©ÔÚÈÈ»úÖУ¬ÓÃÀ´×öÓÐÓù¦µÄÄDz¿·ÖÄÜÁ¿ÓëȼÁÏÍêȫȼÉÕÊͷųöµÄÄÜÁ¿Ö®±È½ÐÈÈ»úµÄЧÂÊ£»È¼Áϲ»¿ÉÄÜÍêȫȼÉÕ£¬È¼ÁÏȼÉÕ²úÉúµÄÄÜÁ¿Ò²²»¿ÉÄÜÍêȫת»¯³ÉÓÐÓÃÄÜÁ¿£¬ËùÒÔÈÈ»úµÄЧÂÊÒ»¶¨Ð¡ÓÚ1£»
£¨2£©Ë®µÄ±ÈÈÈÈÝÊÇ4.2¡Á103J/£¨kg•¡æ£©¡¢Ë®µÄÖÊÁ¿£¬ÀûÓÃÎüÈȹ«Ê½QÎü=cm¡÷tÇó½â£»
£¨3£©ÖªµÀÏÞѹ·§µÄÖÊÁ¿£¬¿ÉÒÔÇóÏÞѹ·§¶Ô³öÆø¿×²úÉúµÄѹÁ¦£¬ÔÙÀûÓÃѹǿ¹«Ê½ÇóÏÞѹ·§¶Ô³öÆø¿×²úÉúµÄѹǿ£¬¼ÓÉÏÍâ½ç´óÆøѹ£¬µÃ³ö¹øÄÚÆøѹ£¬´Ó·Ðµã-ÆøѹͼÏóÉϵóö¸ßѹ¹øÄÚ×î¸ßζȣ®

½â´ð ½â£º£¨1£©ÈÈ»ú¹¤×÷ʱ£¬È¼ÁÏȼÉÕʱ·Å³öµÄÈÈÁ¿²»¿É±ÜÃâµØ¿Ë·þĦ²Á×ö¹¦ÏûºÄ¡¢±»¸ßÎÂÑÌÆø´ø×ߵȣ¬Ôì³Éת»¯ÎªÓÐÓù¦µÄÄÜÁ¿Ð¡ÓÚȼÁÏȼÉշųöµÄÈÈÁ¿£»
£¨2£©Ë®ÎüÊÕµÄÈÈÁ¿£ºQÎü=cm¡÷t=4.2¡Á103J/£¨kg•¡æ£©¡Á1000kg¡Á£¨55¡æ-25¡æ£©=1.26¡Á108J£»
£¨3£©¹øÄÚÆøѹµÈÓÚÒ»±ê×¼´óÆøѹÓëÏÞѹ·§¶ÔÆøÌåѹǿ֮ºÍ£¬¼´£ºpÄÚ=p·§+p0£»
ÏÞѹ·§¶Ô³öÆø¿×²úÉúµÄѹÁ¦£ºF=G=mg=0.08kg¡Á10N/kg=0.8N£¬
³öÆø¿×µÄÃæ»ý£ºS=¦Ðr2=3.14¡Á£¨$\frac{1}{2}$¡Á4mm£©2=12.56mm2=1.256¡Á10-5m2£¬
ÏÞѹ·§¶Ô³öÆø¿×²úÉúµÄѹǿ£º
P·§=$\frac{F}{S}$=$\frac{0.8N}{1.256¡Á1{0}^{-5}{m}^{2}}$¡Ö0.64¡Á105Pa£¬
¹øÄÚÆøѹ£º
pÄÚ=p·§+p0=0.64¡Á105Pa+1¡Á105Pa=1.64¡Á105Pa£®
´Ó·Ðµã-ÆøѹͼÏóÉϵóö¸ßѹ¹øÄÚζȣºt=115¡æ£®
¹Ê´ð°¸Îª£º£¨1£©Ð¡ÓÚ£»£¨2£©1.26¡Á108£»£¨3£©115£®

µãÆÀ ±¾Ì⿼²éÁËѧÉú¶ÔÎüÈȹ«Ê½¡¢Ñ¹Ç¿¹«Ê½µÄÀí½âºÍÔËÓ㬻á¼ÆËã¸ßѹ¹øÄÚµÄÆøѹ¡¢´Ó·Ðµã-ÆøѹͼÏóËѼ¯ÐÅÏ¢£¬×¢Òⵥλ»»Ë㣮

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ

6£®²ÅÏÂÉà¼â£¬ÓÖÉÏÐÄÍ·µÄ¡¶Éà¼âÉϵÄÖйú2¡·Èú£ÄÚÍâ¹ÛÖÚÁìÂÔÁËÖлªÒûʳ֮ÃÀ£®ÈçͼËùʾ£¬Í¨¹ý¼å¡¢Õô¡¢³´¡¢°èÅëµ÷µÄËÄÖÖÃÀʳÖÐËù°üº¬µÄÎïÀí֪ʶ£¬ÈÏʶ´íÎóµÄÊÇ£¨¡¡¡¡£©
A£®¼å£ºÀÓ¼å±ýµÄöË£¨¨¤o£©×ÓÒ»°ãÓÃÌúÖÆÔ죬Ö÷ÒªÊÇÀûÓÃÁËÌúµÄ±ÈÈÈÈÝ´ó
B£®Õô£ºÐ·»ÆºÍÉÕÂóÊÇͨ¹ýÈÈ´«µÝºÍ¸ßÎÂË®ÕôÆøÒº»¯·ÅÈÈÕôÊìµÄ
C£®³´£ºÞ¼ÝïºÍÀ°ÈâÖ÷ÒªÊÇͨ¹ýÈÈ´«µÝµÄ·½Ê½Ôö¼ÓÁËÄÚÄÜ
D£®°è£ºÏã´»ºÍ¶¹¸¯Ïà°èºóµÄÈëζÊÇ·Ö×ÓÎÞ¹æÔòÈÈÔ˶¯µÄ½á¹û

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ

7£®ÈçͼËùʾ£¬Ä³ÈË·Ö±ðÓÃ300Å£ºÍ200Å£µÄÁ¦£¬½«Í¬Ò»¸ö×°ÓÐË®µÄÈÝÆ÷´ÓµØÃæÉÏÖ±½Ó°áµ½³µÉϺÍͨ¹ýбÃæ°áµ½³µÉÏ£®ÏÂÁÐ˵·¨ÖдíÎóµÄÊÇ£¨¡¡¡¡£©
A£®ÓÃ300Å£µÄÁ¦°áÔËÈÝÆ÷ʱ×öÁË300½¹µÄ¹¦
B£®ÓÃ200Å£µÄÁ¦°áÔËÈÝÆ÷ʱ×öÁË200½¹µÄ¹¦
C£®ÓÃ200Å£µÄÁ¦°áÔËÈÝÆ÷ʱ×öÁË300½¹µÄ¹¦
D£®Í¨¹ýбÃæ°áÔËÈÝÆ÷ʱ²»ÄÜÊ¡¹¦

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º½â´ðÌâ

4£®Èçͼ£¬ÖØ27Å£µÄÎïÌåB·ÅÔÚˮƽµØÃæÉÏ£¬ÖØ18Å£µÄÎïÌåAµþ·ÅÔÚBµÄÖÐÑ룬ÔòA¶ÔBµÄѹÁ¦ÓëB¶ÔµØÃæµÄѹÁ¦Ö®±ÈΪ2£º5£»ÈôAµÄµ×Ãæ»ýÓëBµÄµ×Ãæ»ýÖ®±ÈΪ3£º5£¬ÔòA¶ÔBµÄѹǿÓëB¶ÔµØÃæµÄѹǿ֮±ÈΪ2£º3£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ

11£®ÒÑÖªµ¼ÌåµÄµç×è¸úµ¼ÌåµÄ³¤¶È³ÉÕý±È£¬¸úµ¼ÌåµÄºá½ØÃæ»ý³É·´±È£®ÔÚÈçͼËùʾµÄµç·ÖУ¬abΪ´Öϸ¾ùÔȳ¤ÎªLµÄµç×èË¿£¬»¬Æ¬PÓëah½Ó´¥Á¼ºÃ²¢¿É×ÔÓÉ»¬¶¯£¬R0Ϊ¶¨Öµµç×裮ÈôÒÔµçѹ±íʾÊýUΪ×Ý×ø±ê£¬PÀëaµãµÄ¾àÀëxΪºá×ø±ê£¬µ±±ÕºÏ¿ª¹ØSºó£¬UËæx±ä»¯µÄͼÏßӦΪÏÂͼÖеģ¨µçÔ´µçѹ²»±ä£© £¨¡¡¡¡£©
A£®B£®C£®D£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ

1£®ÓÐÒ»Ö»¡°6V 3W¡±µÄµÆÅݺÍ9·üµÄµçÔ´£¬ÓûʹµÆÅÝÕý³£·¢¹â£¬¿É²ÉÓõķ½·¨ÊÇ£¨¡¡¡¡£©
A£®²¢ÁªÒ»¸ö1Å·µÄµç×èB£®²¢ÁªÒ»¸ö6Å·µÄµç×è
C£®´®ÁªÒ»¸ö1Å·µÄµç×èD£®´®ÁªÒ»¸ö6Å·µÄµç×è

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º½â´ðÌâ

8£®Ä³Í¬Ñ§Ñо¿¹âµÄÕÛÉä¹æÂÉ£¬¼Ç¼ʵÑéÊý¾ÝÈçÏÂ±í£®
´ÎÊýÈëÉä½ÇÕÛÉä½Ç
110¡ã15.1¡ã
220¡ã30.9¡ã
330¡ã48.6¡ã
440¡ã74.6¡ã
£¨1£©·ÖÎöʵÑéÊý¾ÝµÃÖª£¬µ±¹â´ÓÒ»ÖÖÎïÖÊбÉäÈëÁíÒ»ÖÖÎïÖÊʱ£¬ÕÛÉä½Ç¸úÈëÉä½ÇÖ®¼äµÄ¹ØϵÊÇÕÛÉä½Ç´óÓÚÈëÉä½Ç£¬ÕÛÉä½ÇËæ×ÅÈëÉä½ÇµÄÔö´ó¶øÔö´ó£®
£¨2£©ÇëÄãÍƲâÕâλͬѧ×öʵÑéʱ£¬ÈëÉä¹âÏßÊÇ´Ó²£Á§ÉäÏò¿Õ£¨Ñ¡Ìî¡°²£Á§ÉäÏò¿ÕÆø¡±»ò¡°¿ÕÆøÉäÏò²£Á§¡±£©£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÌî¿ÕÌâ

5£®Ò»°ãÇé¿öÏ£¬È¼ÉÕÏàͬÖÊÁ¿µÄ²»Í¬²ÄÁÏ£¬·Å³öµÄÈÈÁ¿ÊDz»Í¬µÄ£®ÎÒÃÇ°ÑijÖÖ²ÄÁÏȼÉշųöµÄÈÈÁ¿ÓëÖÊÁ¿Ö®±È½Ð×öÕâÖÖȼÁϵÄÈÈÖµ£¬ÈÈÖµµÄµ¥Î»ÓÐJ/kgºÍJ/m3£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ

8£®ÈçͼΪ¼×¡¢ÒÒÁ½ÎïÌåµÄÖÊÁ¿-Ìå»ý¹ØϵͼÏ󣬶Áͼ¿ÉÖª£¨¡¡¡¡£©
A£®ÔÚÖÊÁ¿ÏàͬµÄÇé¿öÏ£¬¼×µÄÌå»ý½Ï´ó
B£®ÔÚÌå»ýÏàͬµÄÇé¿öÏ£¬ÒÒµÄÖÊÁ¿½Ï´ó
C£®¼×µÄÃܶÈΪ1g/cm3
D£®¼×µÄÃܶÈΪ0.5g/cm3

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸