6£®ÔÚ¡°Ì½¾¿½´Ó͵ÄÃܶȡ±ÊµÑéÖУº

£¨1£©½«Ììƽ·ÅÔÚˮƽ×ÀÃæÉÏ£¬°ÑÓÎÂëÒÆÖÁÁã¿Ì¶ÈÏß´¦£¬Èç¹ûÖ¸ÕëÖ¸ÔÚ·Ö¶ÈÅ̵ÄÓҲ࣬ҪʹºáÁºÆ½ºâ£¬Ó¦½«Æ½ºâÂÝĸÏò×󠣨Ìî¡°×ó¡±»ò¡°ÓÒ¡±£©µ÷£®
£¨2£©ÓÃÌìƽ²â³ö¿ÕÉÕ±­µÄÖÊÁ¿Îª17g£¬ÔÚÉÕ±­Öе¹ÈëÊÊÁ¿µÄ½´ÓÍ£¬²â³öÉÕ±­ºÍ½´Ó͵Ä×ÜÖÊÁ¿Èçͼ¼×Ëùʾ£®½«ÉÕ±­ÖеĽ´ÓÍÈ«²¿µ¹ÈëÁ¿Í²ÖУ¬½´Ó͵ÄÌå»ýÈçͼÒÒËùʾ£¬Ôò½´Ó͵ÄÃܶÈΪ1.125g/cm3£®
£¨3£©ÓÃÉÏÊö·½·¨²â³öµÄ½´ÓÍÃܶȻáÆ«´ó £¨Ìî¡°Æ«´ó¡±»ò¡°Æ«Ð¡¡±£©£®
£¨4£©Èç¹ûûÓÐÁ¿Í²£¬Ö»ÒªÌṩÊÊÁ¿µÄË®£¬ÓÃÉÏÊöÆ÷²ÄÕÕÑùÄܲâÁ¿³ö½´Ó͵ÄÃܶȣ®ÇëÄã¼òÊöʵÑé·½·¨£º¢ÙÓÃÌìƽ²â³öÉÕ±­µÄÖÊÁ¿m1£»
¢Ú½«ÉÕ±­×°ÂúË®£¬²â³öÆäÖÊÁ¿m2£»
¢Û½«Ë®µ¹³ö£¬ÔÙ½«ÉÕ±­×°Âú½´ÓÍ£¬²â³öÆäÖÊÁ¿m3£®
¢Ü½´Ó͵ÄÃܶȦѽ´ÓÍ=$\frac{{m}_{3}-{m}_{1}}{{m}_{2}-{m}_{1}}{¦Ñ}_{Ë®}$£®£®

·ÖÎö £¨1£©ÊµÑéÌìƽ֮ǰÏÈ°ÑÌìƽ·ÅÔÚˮƽ̨ÉÏ£¬ÓÎÂëÒƵ½±ê³ß×ó¶ËµÄÁã¿Ì¶È´¦£¬È»ºóµ÷½ÚƽºâÂÝĸ£¬Æ½ºâÂÝĸÏòÉÏÇ̵ÄÒ»¶ËÒƶ¯£¬Ê¹ÌìƽµÄºáÁºÆ½ºâ£»
£¨2£©íÀÂëÓëÓÎÂëʾÊýÖ®ºÍÊÇÌìƽËù²âÎïÌåµÄÖÊÁ¿£»ÓÉͼʾÁ¿Í²¶Á³ö½´Ó͵ÄÌå»ý£¬È»ºóÓÉÃܶȹ«Ê½¿ÉÒÔÇó³ö½´Ó͵ÄÃܶȣ»
£¨3£©ÓÉÓÚÉÕ±­ÄÚ±ÚÕ³ÓÐÒºÌ壬²âµÃµÄÑÎË®Ìå»ýVƫС£¬µ«ÖÊÁ¿×¼È·£¬ËùÒÔÃܶȱä´ó£»
£¨4£©ÔÚûÓÐÁ¿Í²µÄÇé¿öÏ£¬Éè¼ÆÕâһʵÑéµÄÄѵãÔÚÓÚ½èÖúË®À´½øÐеÈЧÌæ´ú£¬µÃ³öÆ¿×ÓµÄÈÝ»ý£¬ÔÙÓÃÆ¿×Ó×°ÈëµÈÌå»ýµÄ½´ÓÍ£¬²â³öÖÊÁ¿£¬×îºóÓÃÃܶȵĹ«Ê½À´¼ÆË㣬Çó³ö½´Ó͵ÄÃܶȾͿÉÒÔÁË£®

½â´ð ½â£º£¨1£©Ììƽ·ÅÔÚˮƽ×ÀÃæÉÏ£¬ÏȽ«ÓÎÂëÒƵ½±ê³ß×ó¶ËµÄÁã¿Ì¶È´¦£»Ö¸ÕëÖ¸ÔÚ·Ö¶ÈÅ̵ÄÓҲ࣬ºáÁºµÄ×ó¶ËÉÏÇÌ£¬Ììƽ×ó¶Ë»òÓҶ˵ÄƽºâÂÝĸ¶¼ÏòÉÏÇ̵Ä×ó¶ËÒƶ¯£»
£¨2£©ÓÉͼ¼×Ëùʾ¿ÉÖª£¬½´ÓͺÍÉÕ±­µÄ×ÜÖÊÁ¿£ºm×Ü=50g+10g+2g=62g£¬
½´Ó͵ÄÖÊÁ¿m=62g-17g=45g£¬ÓÉͼÒÒËùʾÁ¿Í²¿ÉÖª£¬½´Ó͵ÄÌå»ý£ºV=40ml=40cm3£¬
½´Ó͵ÄÃܶȣº¦Ñ=$\frac{m}{V}$=$\frac{45g}{40c{m}^{3}}$=1.125g/cm3=1.125¡Á103kg/m3£»
£¨3£©°ÑÉÕ±­ÖеĽ´ÓÍÈ«²¿µ¹ÈëÁ¿Í²ÖУ¬ÓÉÓÚÉÕ±­ÄÚ±ÚÕ³ÓÐÒºÌåËùÒÔÌå»ýVƫС£¬¸ù¾ÝÃܶȹ«Ê½¦Ñ=$\frac{m}{V}$¿ÉÖª£¬ÃܶÈÆ«´ó£»
£¨4£©ÊµÑé²½Ö裺¢ÙÓÃÌìƽ²â³öÉÕ±­µÄÖÊÁ¿m1£»
¢Ú½«ÉÕ±­×°ÂúË®£¬²â³öÆäÖÊÁ¿m2£»Ë®µÄÖÊÁ¿m=m2-m1£¬Ë®µÄÌå»ýVË®=$\frac{{m}_{Ë®}}{{¦Ñ}_{Ë®}}$=$\frac{{m}_{2}-{m}_{1}}{{¦Ñ}_{Ë®}}$
¢Û½«Ë®µ¹³ö£¬ÔÙ½«ÉÕ±­×°Âú½´ÓÍ£¬²â³öÆäÖÊÁ¿m3£®
¢Ü½´Ó͵ÄÖÊÁ¿m=m3-m1£¬½´Ó͵ÄÌå»ý£ºV=VË®=$\frac{{m}_{2}-{m}_{1}}{{¦Ñ}_{Ë®}}$
½´Ó͵ÄÃܶȦѽ´ÓÍ=$\frac{m}{V}$=$\frac{{m}_{3}-{m}_{1}}{\frac{{m}_{2}-{m}_{1}}{{¦Ñ}_{Ë®}}}$=$\frac{{m}_{3}-{m}_{1}}{{m}_{2}-{m}_{1}}{¦Ñ}_{Ë®}$£®
¹Ê´ð°¸Îª£º£¨1£©Á㣻×󣻣¨2£©1.125£»£¨3£©Æ«´ó£»£¨4£©¢ÙÓÃÌìƽ²â³öÉÕ±­µÄÖÊÁ¿m1£»
¢Ú½«ÉÕ±­×°ÂúË®£¬²â³öÆäÖÊÁ¿m2£»
¢Û½«Ë®µ¹³ö£¬ÔÙ½«ÉÕ±­×°Âú½´ÓÍ£¬²â³öÆäÖÊÁ¿m3£®
¢Ü½´Ó͵ÄÃܶȦѽ´ÓÍ=$\frac{{m}_{3}-{m}_{1}}{{m}_{2}-{m}_{1}}{¦Ñ}_{Ë®}$£®

µãÆÀ ±¾Ì⿼²éÁËÌìƽµÄµ÷½Ú¡¢Ììƽ¶ÁÊý¡¢Á¿Í²¶ÁÊý¡¢ÇóÃܶȣ¬ÒªÕÆÎÕÌìƽµÄʹÓ÷½·¨¡¢×¢ÒâÊÂÏîÓë¶ÁÊý·½·¨£¬Çó³ö½´Ó͵ÄÖÊÁ¿ÓëÌå»ý£¬Ó¦ÓÃÃܶȹ«Ê½¿ÉÒÔÇó³ö½´Ó͵ÄÃܶȣ®

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º½â´ðÌâ

16£®£¨1£©ÈçͼÊÇСÃ÷Éè¼ÆµÄ¡°²âƽ¾ùËٶȵÄʵÑ顱װÖã¬ÀûÓÃÕâ¸ö×°ÖòâС³µÔÚбÃæÉÏ×ö±äËÙÖ±ÏßÔ˶¯µÄƽ¾ùËٶȣ®
Õâ¸öʵÑéµÄÔ­ÀíÊÇv=$\frac{S}{t}$£¬ÊµÑé±ØÐë²âÁ¿µÄÎïÀíÁ¿ÊÇ·³ÌºÍʱ¼ä£¬ÔÚ¸ÃʵÑéÖУ¬Ö®ËùÒÔҪǿµ÷¡°Ê¹Ð±Ãæ±£³ÖºÜСµÄƶȡ±£¬ÊÇÒòΪС³µÔÚбÃæÉÏÔ˶¯Ê±¼ä»á³¤Ð©£¬±ãÓÚ²âÁ¿Ê±¼ä£®
£¨2£©Èçͼ£¬ÈôÃë±íÿ¸ñΪ1s£¬¸Ã´ÎʵÑéÖУ¬È«³ÌËùÓõÄʱ¼äΪt=5s£¬Ð¡³µÍ¨¹ýÈ«³ÌµÄƽ¾ùËÙ¶ÈΪv=0.12m/s£¬ÔòʵÑéÖÐС³µÍ¨¹ýÉÏ°ë¶Î·³ÌµÄƽ¾ùËٶȣ¼£¨Ìî¡°´óÓÚ¡±¡°Ð¡ÓÚ¡±»ò¡°µÈÓÚ¡±£©Ð¡³µÍ¨¹ýÏ°ë¶Î·³ÌµÄƽ¾ùËٶȣ®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÌî¿ÕÌâ

17£®ÔÚÀ¼Öݹú¼ÊÂíÀ­ËÉÈüÖУ¬ÂíÀ­ËÉÈüÈ«³ÌΪ42.195km£¬Ä³ÒµÓàÑ¡Êֵijɼ¨Îª3h30min£¬ÔòÆäÈ«³ÌµÄƽ¾ùËÙ¶ÈΪ3.35m/s£¨½á¹û±£ÁôÁ½Î»Ð¡Êý£©£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ

14£®ÏÂÁÐ˵·¨ÖУ¬×î½Ó½üʵ¼ÊÇé¿öµÄÊÇ£¨¡¡¡¡£©
A£®Ò»¸ö³ÉÄêÈËÕý³£²½ÐÐËÙ¶ÈΪ10m/sB£®ÆÕͨÖÐѧÉúʹÓõĿÎ×À¸ß¶ÈΪ1.5m
C£®1±ê×¼´óÆøѹÏ·ÐË®µÄζÈÊÇ98¡æD£®ÈËÕý³£µÄÌåÎÂԼΪ37¡æ

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÊµÑé̽¾¿Ìâ

1£®Áõ´ÏΪÁ˲âÁ¿ÒºÌåAµÄÃܶȣ¬½øÐÐÁËÈçÏÂʵÑ飺
£¨1£©½«Ììƽ·ÅÔÚˮƽ̨ÃæÉÏ£¬°ÑÓÎÂëÒƵ½±ê³ßµÄÁã¿ÌÏß´¦£®ºáÁº¾²Ö¹Ê±£¬Ö¸ÕëÖ¸ÔÚ·Ö¶ÈÅÌÖÐÑë¿Ì¶ÈÏßµÄ×ó²à£¬Èçͼ¼×Ëùʾ£®ÎªÊ¹ºáÁºÔÚˮƽλÖÃƽºâ£¬Ó¦½«ºáÁºÓҶ˵ÄƽºâÂÝĸÏòÓÒ¶ËÒƶ¯£®
£¨2£©½«ÒºÌåAµ¹ÈëÁ¿Í²ÖУ¬ÈçͼÒÒËùʾ£¬ÔòÁ¿Í²ÖÐÒºÌåAµÄÌå»ýΪ60cm3£®
£¨3£©½«Á¿Í²ÖеÄÒºÌåAÈ«²¿µ¹Èë¿ÕÉÕ±­ÖУ¬°ÑÉÕ±­·ÅÔÚµ÷½ÚºÃµÄÌìƽµÄ×óÅÌÖУ¬µ±ÓÒÅÌÖÐíÀÂëµÄÖÊÁ¿ºÍÓÎÂëÔÚ±ê³ßÉϵÄλÖÃÈçͼ±ûËùʾʱ£¬ÌìƽºáÁºÔÙ´Îˮƽƽºâ£¬ÔòÉÕ±­ºÍÒºÌåAµÄ×ÜÖÊÁ¿Îª152g£®
£¨4£©ÊµÑéÖвâµÃËùÓÿÕÉÕ±­µÄÖÊÁ¿Îª92g£¬¸ù¾ÝÉÏÊöʵÑéÊý¾Ý¼ÆËãÒºÌåAµÄÃܶÈΪ1.0¡Á103kg/m3£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÌî¿ÕÌâ

11£®ÀÖÒôÓÐÈý¸öÒªËØ£ºÒôµ÷¡¢Ïì¶ÈºÍÒôÉ«£®ÈÕ³£Éú»îÖÐÎÒÃdz£ËµÉùÒô¡°Õð¶úÓûÁû¡±£¬ÕâÊÇÖ¸ËüµÄÏì¶ÈºÜ´ó£»Ò½ÉúÓó¬Éù²¨³ýÈ¥ÈËÌåÄڵĽáʯ£¬ËµÃ÷Éù²¨Äܹ»´«µÝÄÜÁ¿£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ

18£®ÈçͼËùʾ£¬S±ÕºÏºó£¬½«»¬¶¯±äÒõÆ÷µÄ»¬Æ¬PÏòÓÒÒƶ¯Ê±£¨¡¡¡¡£©
A£®µçÁ÷±íʾÊý±ä´ó£¬µçѹ±íʾÊý±ä´óB£®µçÁ÷±íʾÊý±äС£¬µçѹ±íʾÊý±äС
C£®µçÁ÷±íʾÊý±ä´ó£¬µçѹ±íʾÊý±äСD£®µçÁ÷±íʾÊý±äС£¬µçѹ±íʾÊý±ä´ó

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÌî¿ÕÌâ

15£®ÓÐÒ»Ö»ÖÊÁ¿Îª200gµÄ²£Á§Æ¿£¬µ±Æ¿ÄÚ×°Âúˮʱ£¬Æ¿ºÍË®µÄ×ÜÖÊÁ¿Îª700g£¬ÓôËƿװijҺÌ壬×î¶àÄÜ×°400gÒºÌ壬Ôò²£Á§Æ¿µÄÈÝ»ýÊÇ500cm3£¬ÕâÖÖÒºÌåµÄÃܶÈΪ0.8¡Á103 kg/m3£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ

16£®Æï×ÔÐгµÉÏÏ°àÊÇÒ»Ïî·Ç³£»·±£ÓÖÄܶÍÁ¶ÉíÌåµÄÔ˶¯£®µ±ÎÒÃÇÓÃÁ¦µÅ×ÔÐгµ£¬Ê¹×ÔÐгµÏòÇ°½øʱ£¬×ÔÐгµµÄÇ°ºóÂÖÓëµØÃæÖ®¼ä¶¼´æÔÚĦ²ÁÁ¦£¬¹ØÓÚÕâÁ½¸öĦ²ÁÁ¦µÄ·½ÏòµÄ˵·¨ÕýÈ·µÄÊÇ£¨¡¡¡¡£©
A£®Ç°ÂÖÏòÇ°£¬ºóÂÖÏòºóB£®Ç°ÂÖÏòºó£¬ºóÂÖÏòÇ°
C£®Ç°ºóÂÖ¶¼ÏòÇ°D£®Ç°ºóÂÖ¶¼Ïòºó

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸