ÌâÄ¿ÄÚÈÝ
СÃ÷ͬѧÔÚѧϰÁËÃܶȵÄ֪ʶºó£¬ÏëÓÃÌìƽºÍÁ¿Í²²âÁ¿Ò»±ÑÎË®µÄÃܶȣº
ʵÑé¹ý³ÌÈçÏ£º
A£®½«Ììƽ·ÅÔÚˮƽ×ÀÃæÉÏ£¬°ÑÓÎÂëÒƵ½
B£®ÔÚ²£Á§±ÖÐ×°ÈëÊÊÁ¿µÄÑÎË®£¬·ÅÔÚµ÷½ÚºÃµÄÍÐÅÌÌìƽ×óÅÌÉÏ£¬ÔÚÓÒÅÌÖмӼõíÀÂë²¢Òƶ¯ÓÎÂ룬µ±ÌìƽÖØÐÂƽºâʱ£¬¶Á³öíÀÂëºÍÓÎÂëµÄʾÊýºÍΪ124.2g£®£¨ÒÑÌîÈë±íÖУ©
C£®°Ñ²£Á§±ÖеÄÑÎË®µ¹ÈëÁ¿Í²ÖÐÒ»²¿·Ö£¬¼ÇÏÂÁ¿Í²ÖÐÑÎË®µÄÌå»ý²¢ÌîÈëÏÂ±í£®
D£®°Ñ²£Á§±ºÍÊ£ÓàÑÎË®·ÅÔÚÌìƽ×óÅÌÉϳÆÁ¿£¬µ±ÌìƽÖØÐÂƽºâʱ£¬ËùÓÃíÀÂëºÍÓÎÂëλÖÃÈçͼËùʾ£¬½«²£Á§±ºÍÊ£ÓàÑÎË®µÄ×ÜÖÊÁ¿ÌîÈëϱíÖУ®
E£®¼ÆËã³öÑÎË®µÄÖÊÁ¿ºÍÃܶȣ¬ÌîÈëϱíÖУ®
ʵÑé¹ý³ÌÈçÏ£º
A£®½«Ììƽ·ÅÔÚˮƽ×ÀÃæÉÏ£¬°ÑÓÎÂëÒƵ½
±ê³ß×ó¶ËµÄÁã¿Ì¶ÈÏß
±ê³ß×ó¶ËµÄÁã¿Ì¶ÈÏß
´¦£¬½á¹û·¢ÏÖ×óÅ̵ͣ¬ÓÒÅ̸ߣ¬Ó¦½«Æ½ºâÂÝĸÏòÓÒ
ÓÒ
¶ËÒƶ¯£¨Ìî¡°×ó¡±»ò¡°ÓÒ¡±£©£®B£®ÔÚ²£Á§±ÖÐ×°ÈëÊÊÁ¿µÄÑÎË®£¬·ÅÔÚµ÷½ÚºÃµÄÍÐÅÌÌìƽ×óÅÌÉÏ£¬ÔÚÓÒÅÌÖмӼõíÀÂë²¢Òƶ¯ÓÎÂ룬µ±ÌìƽÖØÐÂƽºâʱ£¬¶Á³öíÀÂëºÍÓÎÂëµÄʾÊýºÍΪ124.2g£®£¨ÒÑÌîÈë±íÖУ©
C£®°Ñ²£Á§±ÖеÄÑÎË®µ¹ÈëÁ¿Í²ÖÐÒ»²¿·Ö£¬¼ÇÏÂÁ¿Í²ÖÐÑÎË®µÄÌå»ý²¢ÌîÈëÏÂ±í£®
D£®°Ñ²£Á§±ºÍÊ£ÓàÑÎË®·ÅÔÚÌìƽ×óÅÌÉϳÆÁ¿£¬µ±ÌìƽÖØÐÂƽºâʱ£¬ËùÓÃíÀÂëºÍÓÎÂëλÖÃÈçͼËùʾ£¬½«²£Á§±ºÍÊ£ÓàÑÎË®µÄ×ÜÖÊÁ¿ÌîÈëϱíÖУ®
²£Á§±ºÍÑÎË®µÄÖÊÁ¿m1/g | ²£Á§±ºÍÊ£ÓàÑÎË®µÄ ÖÊÁ¿m2/g |
Á¿Í²ÖÐÑÎË®µÄ ÖÊÁ¿m/g |
Á¿Í²ÖÐÑÎË®µÄ Ìå»ýV/cm3 |
ÑÎË®µÄÃܶȣ¨kg?m-3£© |
124.2 |
·ÖÎö£º£¨1£©Ììƽµ÷ƽºâʱ×ñѵÄÔÔòÊÇ£º×óÆ«ÓÒµ÷£¬ÓÒÆ«×óµ÷£¬ÏÈ¿ìºóÂý£»
£¨2£©¢ÙÏȶÁ³öÊ£ÓàÑÎË®ÓëÉÕ±µÄÖÊÁ¿m2£¬ÔÙÓÃÔÀ´µÄ×ÜÖÊÁ¿m1¼õȥʣÓàµÄÖÊÁ¿m2¾ÍµÈÓÚµ¹ÈëÁ¿Í²ÖеÄÑÎË®µÄÖÊÁ¿m£»
¢ÚÑÎË®µÄÌå»ýVҪƽÊÓÁ¿Í²ÄÚÒºÃæÖ±½Ó¶Á³ö£»
¢ÛÑÎË®µÄÃܶÈÓæÑ=
Ö±½ÓËã³ö£®
£¨2£©¢ÙÏȶÁ³öÊ£ÓàÑÎË®ÓëÉÕ±µÄÖÊÁ¿m2£¬ÔÙÓÃÔÀ´µÄ×ÜÖÊÁ¿m1¼õȥʣÓàµÄÖÊÁ¿m2¾ÍµÈÓÚµ¹ÈëÁ¿Í²ÖеÄÑÎË®µÄÖÊÁ¿m£»
¢ÚÑÎË®µÄÌå»ýVҪƽÊÓÁ¿Í²ÄÚÒºÃæÖ±½Ó¶Á³ö£»
¢ÛÑÎË®µÄÃܶÈÓæÑ=
m |
V |
½â´ð£º½â£º£¨1£©½«Ììƽ·ÅÔÚˮƽ×ÀÃæÉÏ£¬°ÑÓÎÂëÒƵ½±ê³ß×ó¶ËµÄÁã¿Ì¶ÈÏß´¦£®
·¢ÏÖ×óÅ̵ͣ¬ÓÒÅ̸ߣ¬¼´Ö¸Õë×óÆ«£¬Æ½ºâÂÝĸӦÓÒµ÷£»
¹Ê´ð°¸Îª£º±ê³ß×ó¶ËµÄÁã¿Ì¶ÈÏߣ»ÓÒ£®
£¨2£©Ê£ÓàÑÎË®ÉÕ±µÄÖÊÁ¿Îªm2=50g+5g+3.2g=58.2g£¬µ¹ÈëÁ¿Í²ÖÐÑÎË®µÄÖÊÁ¿m=m1-m2=124.2g-58.2g=66g£»
Á¿Í²ÖÖÑÎË®µÄÌå»ýV=60ml=60cm3£»
ÑÎË®µÄÃܶȦÑ=
=
=1.1g/cm3=1.1¡Á103kg/m3£®
¹Ê´ð°¸¼û±í¸ñ£º
·¢ÏÖ×óÅ̵ͣ¬ÓÒÅ̸ߣ¬¼´Ö¸Õë×óÆ«£¬Æ½ºâÂÝĸӦÓÒµ÷£»
¹Ê´ð°¸Îª£º±ê³ß×ó¶ËµÄÁã¿Ì¶ÈÏߣ»ÓÒ£®
£¨2£©Ê£ÓàÑÎË®ÉÕ±µÄÖÊÁ¿Îªm2=50g+5g+3.2g=58.2g£¬µ¹ÈëÁ¿Í²ÖÐÑÎË®µÄÖÊÁ¿m=m1-m2=124.2g-58.2g=66g£»
Á¿Í²ÖÖÑÎË®µÄÌå»ýV=60ml=60cm3£»
ÑÎË®µÄÃܶȦÑ=
m |
V |
66g |
60cm3 |
¹Ê´ð°¸¼û±í¸ñ£º
²£Á§±ºÍÑÎË®µÄÖÊÁ¿m1/g | ²£Á§±ºÍÊ£ÓàÑÎË®µÄÖÊÁ¿m2/g | Á¿Í²ÖÐÑÎË®µÄ ÖÊÁ¿m/g |
Á¿Í²ÖÐÑÎË®µÄ Ìå»ýV/cm3 |
ÑÎË®µÄÃܶȣ¨kg?m-3£© |
124.2 | 58.2 | 66 | 60 | 1.1¡Á103 |
µãÆÀ£º²âÒºÌåÃܶȵĻù±¾·½·¨ÊÇ£ºÏÈÓÃÌìƽ²â³öÒºÌåºÍÉÕ±µÄ×ÜÖÊÁ¿m1£¬ÔÙ½«ÊÊÁ¿ÒºÌåµ¹ÈëÁ¿Í²£¬¶Á³öÌå»ýΪV£¬²¢ÓÃÌìƽ²â³öÊ£ÓàÒºÌåºÍÉÕ±µÄÖÊÁ¿m2£¬ÒºÌåÃܶȱí´ïʽ¦Ñ=
=
£®
m |
V |
m1-m2 |
V |
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿
СÃ÷ͬѧÔÚѧϰÁËÃܶȵÄ֪ʶºó£¬ÏëÓÃÌìƽºÍÁ¿Í²²âÁ¿Ò»±ÑÎË®µÄÃܶȣ¬ÊµÑé¹ý³ÌÈçÏ£º
A£®ÔÚ²£Á§±ÖÐ×°ÈëÊÊÁ¿µÄÑÎË®£¬·ÅÔÚµ÷½ÚºÃµÄÍÐÅÌÌìƽ×óÅÌÉÏ£¬ÔÚÓÒÅÌÖмӼõíÀÂë²¢Òƶ¯ÓÎÂ룬µ±ÌìƽÖØÐÂƽºâʱ£¬¶Á³öíÀÂëºÍÓÎÂëµÄʾÊýºÍΪ127.2g£®£¨ÒÑÌîÈë±íÖУ©
B£®°Ñ²£Á§±ÖеÄÑÎË®µ¹ÈëÁ¿Í²ÖÐÒ»²¿·Ö£¬ÈçͼËùʾ£¬¼ÇÏÂÁ¿Í²ÖÐÑÎË®µÄÌå»ý²¢ÌîÈëϱíÖУ®
C£®°Ñ²£Á§±ºÍÊ£ÓàÑÎË®·ÅÔÚÌìƽ×óÅÌÉϳÆÁ¿£¬µ±ÌìƽÖØÐÂƽºâʱ£¬ËùÓÃíÀÂëºÍÓÎÂëλÖÃÈçͼËùʾ£¬½«²£Á§±ºÍÊ£ÓàÑÎË®µÄ×ÜÖÊÁ¿ÌîÈëϱíÖУ®
D£®¼ÆËã³öÑÎË®µÄÖÊÁ¿ºÍÃܶȣ¬ÌîÈëϱíÖУ®
A£®ÔÚ²£Á§±ÖÐ×°ÈëÊÊÁ¿µÄÑÎË®£¬·ÅÔÚµ÷½ÚºÃµÄÍÐÅÌÌìƽ×óÅÌÉÏ£¬ÔÚÓÒÅÌÖмӼõíÀÂë²¢Òƶ¯ÓÎÂ룬µ±ÌìƽÖØÐÂƽºâʱ£¬¶Á³öíÀÂëºÍÓÎÂëµÄʾÊýºÍΪ127.2g£®£¨ÒÑÌîÈë±íÖУ©
B£®°Ñ²£Á§±ÖеÄÑÎË®µ¹ÈëÁ¿Í²ÖÐÒ»²¿·Ö£¬ÈçͼËùʾ£¬¼ÇÏÂÁ¿Í²ÖÐÑÎË®µÄÌå»ý²¢ÌîÈëϱíÖУ®
C£®°Ñ²£Á§±ºÍÊ£ÓàÑÎË®·ÅÔÚÌìƽ×óÅÌÉϳÆÁ¿£¬µ±ÌìƽÖØÐÂƽºâʱ£¬ËùÓÃíÀÂëºÍÓÎÂëλÖÃÈçͼËùʾ£¬½«²£Á§±ºÍÊ£ÓàÑÎË®µÄ×ÜÖÊÁ¿ÌîÈëϱíÖУ®
D£®¼ÆËã³öÑÎË®µÄÖÊÁ¿ºÍÃܶȣ¬ÌîÈëϱíÖУ®
²£Á§±ºÍÑÎË®µÄÖÊÁ¿m1/g | ²£Á§±ºÍÊ£ÓàÑÎË®µÄÖÊÁ¿m2/g | Á¿Í²ÖÐÑÎË®µÄÖÊÁ¿m/g | Á¿Í²ÖÐÑÎË®µÄÌå»ýV/cm3 | ÑÎË®µÄÃܶȦÑ/ |
127.2 | ______ | ______ | ______ | ______ |
СÃ÷ͬѧÔÚѧϰÁËÃܶȵÄ֪ʶºó£¬ÏëÓÃÌìƽºÍÁ¿Í²²âÁ¿Ò»±ÑÎË®µÄÃܶȣº
ʵÑé¹ý³ÌÈçÏ£º
A£®½«Ììƽ·ÅÔÚˮƽ×ÀÃæÉÏ£¬°ÑÓÎÂëÒƵ½______´¦£¬½á¹û·¢ÏÖ×óÅ̵ͣ¬ÓÒÅ̸ߣ¬Ó¦½«Æ½ºâÂÝĸÏò______¶ËÒƶ¯£¨Ìî¡°×ó¡±»ò¡°ÓÒ¡±£©£®
B£®ÔÚ²£Á§±ÖÐ×°ÈëÊÊÁ¿µÄÑÎË®£¬·ÅÔÚµ÷½ÚºÃµÄÍÐÅÌÌìƽ×óÅÌÉÏ£¬ÔÚÓÒÅÌÖмӼõíÀÂë²¢Òƶ¯ÓÎÂ룬µ±ÌìƽÖØÐÂƽºâʱ£¬¶Á³öíÀÂëºÍÓÎÂëµÄʾÊýºÍΪ124.2g£®£¨ÒÑÌîÈë±íÖУ©
C£®°Ñ²£Á§±ÖеÄÑÎË®µ¹ÈëÁ¿Í²ÖÐÒ»²¿·Ö£¬¼ÇÏÂÁ¿Í²ÖÐÑÎË®µÄÌå»ý²¢ÌîÈëÏÂ±í£®
D£®°Ñ²£Á§±ºÍÊ£ÓàÑÎË®·ÅÔÚÌìƽ×óÅÌÉϳÆÁ¿£¬µ±ÌìƽÖØÐÂƽºâʱ£¬ËùÓÃíÀÂëºÍÓÎÂëλÖÃÈçͼËùʾ£¬½«²£Á§±ºÍÊ£ÓàÑÎË®µÄ×ÜÖÊÁ¿ÌîÈëϱíÖУ®
E£®¼ÆËã³öÑÎË®µÄÖÊÁ¿ºÍÃܶȣ¬ÌîÈëϱíÖУ®
ʵÑé¹ý³ÌÈçÏ£º
A£®½«Ììƽ·ÅÔÚˮƽ×ÀÃæÉÏ£¬°ÑÓÎÂëÒƵ½______´¦£¬½á¹û·¢ÏÖ×óÅ̵ͣ¬ÓÒÅ̸ߣ¬Ó¦½«Æ½ºâÂÝĸÏò______¶ËÒƶ¯£¨Ìî¡°×ó¡±»ò¡°ÓÒ¡±£©£®
B£®ÔÚ²£Á§±ÖÐ×°ÈëÊÊÁ¿µÄÑÎË®£¬·ÅÔÚµ÷½ÚºÃµÄÍÐÅÌÌìƽ×óÅÌÉÏ£¬ÔÚÓÒÅÌÖмӼõíÀÂë²¢Òƶ¯ÓÎÂ룬µ±ÌìƽÖØÐÂƽºâʱ£¬¶Á³öíÀÂëºÍÓÎÂëµÄʾÊýºÍΪ124.2g£®£¨ÒÑÌîÈë±íÖУ©
C£®°Ñ²£Á§±ÖеÄÑÎË®µ¹ÈëÁ¿Í²ÖÐÒ»²¿·Ö£¬¼ÇÏÂÁ¿Í²ÖÐÑÎË®µÄÌå»ý²¢ÌîÈëÏÂ±í£®
D£®°Ñ²£Á§±ºÍÊ£ÓàÑÎË®·ÅÔÚÌìƽ×óÅÌÉϳÆÁ¿£¬µ±ÌìƽÖØÐÂƽºâʱ£¬ËùÓÃíÀÂëºÍÓÎÂëλÖÃÈçͼËùʾ£¬½«²£Á§±ºÍÊ£ÓàÑÎË®µÄ×ÜÖÊÁ¿ÌîÈëϱíÖУ®
²£Á§±ºÍÑÎË®µÄÖÊÁ¿m1/g | ²£Á§±ºÍÊ£ÓàÑÎË®µÄ ÖÊÁ¿m2/g | Á¿Í²ÖÐÑÎË®µÄ ÖÊÁ¿m/g | Á¿Í²ÖÐÑÎË®µÄ Ìå»ýV/cm3 | ÑÎË®µÄÃÜ¶È |
124.2 |