Ka nui o ka mea a me ke kaumaha kikoʻī
Ka nui o ka paʻa
ʻO kekahi o nā waiwai koʻikoʻi o kahi mea, ʻo ia ka nuipaʻa. ʻO ka nuipaʻa ka lakio o ka nuipaʻa o kahi mea i kona nui. Ma ke ʻano makemakika, ua kākau ʻia penei:
ρ = m/V
ρ He leka Helene i hoʻohana pinepine ʻia e hōʻike i ka nui, ʻo m ka nuipa a ʻo V ka nui. He ʻokoʻa loa ka nuipa o kahi wai homogeneous mai ka nuipa o kahi mea paʻa homogeneous. ʻO ka hao a i ʻole ka hau, no ka laʻana, he like ka nuipa ma nā ʻāpana āpau. He ʻokoʻa kēia mai nā wai, e like me ka lewa a i ʻole ka wai. I ka lewa o ka Honua, ʻo ke kiʻekiʻe o ka lewa mai ka ʻili o ka Honua, ʻo ka haʻahaʻa o ka nuipa, ʻoiai no ka wai kai, no ka laʻana, ʻo ka hohonu o ka nuipa, ʻo ka nui o ka nuipa. Hiki i ka nuipa o kahi wai homogeneous ke hilinaʻi i nā mea pili i ke kaiapuni e like me ka mahana a me ke kaomi.
ʻO ka ʻōnaehana International of Units no ka density he kilokani no ka mika cubic (kg/m3No nā anakahi CGS, ʻo ia hoʻi nā kenimika, nā grama a me nā kekona, ua hōʻike ʻia ke anakahi density ma nā grama no ke kenimika cubic (gr/cm3). Eia ka ʻikepili mānoanoa no kekahi mau mea.
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Kanaka
Ka nui o ka paʻa (kg/m3)
Wai
Air
Wai kai
Koko
Kinoea
Mereki
1,00 m 103
1,03 m 103
1,06 m 103
0,68 m 103
13,6 m 103
Paʻa
Es
Aluminum
Ke kila
Gula
Aniani
Laau
ʻO Tembag
ʻO Timah
Tulang
0,92 m 103
2,70 m 103
7,8 m 103
19,3 m 103
2,4 – 2,8 x 103
0,3 – 0,9 x 103
8,9 m 103
11,3 m 103
1,7 – 2.0 x 103
Nā Mea Kinoea
ʻElepa
Helium
Hydrogen
ʻOhu wai (100 oC)
1,293
0,1786
0,08994
0,6
ʻO ka nui o ka mea i ʻōlelo ʻia ma ka papa ma luna, ʻo ia ka nui o ka mea ma ka mahana o 0 oʻO C a me kaomi o 1 atm (lewa a i ʻole atm = anakahi o ke kaomi).
ʻO ke kaumaha kikoʻī
ʻO ke kaumaha kikoʻī ka lakio o ka nui o kahi mea i ka nui o ka wai. ʻO ke kaumaha kikoʻī o kahi mea hiki ke loaʻa ma ka puʻunaue ʻana i ka density ma 103 kg / m3 (ka nui o ka wai). ʻAʻohe ana o ke kaumaha kikoʻī.
Inā emi ka nui o kahi mea ma mua o ka nui o ka wai, a laila e lana ka mea. ʻO ke kaumaha kikoʻī ʻOi aku ka liʻiliʻi o nā mea lana ma mua o 1. I ka ʻaoʻao ʻē aʻe, inā ʻoi aku ka nui o ka nui o kahi mea ma mua o ka nui o ka wai, a laila ʻoi aku kona kaumaha kikoʻī ma mua o 1. I kēia hihia, e piholo ka mea.
