Ka nui o ka paʻa - nā pilikia a me nā hoʻonā

Ka nui o ka ʻiʻo - nā pilikia a me nā hoʻonā

1. ʻO ka nui o kahi mea he 8 cm ³ a ʻo ke kaumaha o kahi mea he 84 grams. He aha ka nui o ka paʻa o ka mea?

ʻIke ʻia:

Ka nui (V) = 8 kenimika ³

Nuipaʻa (m) = 84 grams

Makemake ʻia: ka nui (ρ)

Lōlā:

ρ = m / V = 84 gram / 8 cm ³ = 10.5 gram/cm ³

2. ʻO ka nui o kahi poloka he 5 cm ^{3. Inā he 250 g/cm}³ ka nui o ka poloka , he aha ke kaumaha o ka poloka?

ʻIke ʻia:

Ka nui (V) = 5 kenimika ³

Ka nui o ke kaumaha (ρ) = 250 g/ ^cm3

Makemake ʻia: Ka nui o ka poloka

Lōlā:

ρ = m / V

ρ = ka nuipaʻa, V = ka nui, m = ka nuipaʻa

Ka nui o ka poloka:

m = ρ V = (250 g/cm³ ⁾ (5 cm³ ⁾ = 1250 grams

3. ʻO ka nui o ka wai he 35 cm ³ a ʻo ke kaumaha o ka wai he 60 grams, he aha ka nui o ka wai.

ʻIke ʻia:

Ka nui o ka wai (V) = 35 kenimika ³

Ka nui o ka wai (m) = 60 grams

Makemake ʻia: ka nui (ρ)

Lōlā:

ka nui o ka paʻapū:

ρ = m / V = 60/35 = 1.71 grams/cm ³

4. ʻO ke kaumaha o kahi metala he 120 grams a ʻo ka nui o kahi metala he 60 cm ^3. He aha ka nui o ka metala?

ʻIke ʻia:

Nuipaʻa (m) = 120 grams

Ka nui (V) = 60 kenimika ³

Makemake ʻia: ka nui

Lōlā:

ρ = m / V

ρ = 120 grams / 60 cm ³

ρ = 2 grams/cm ³

Ka nui o ka ʻike - nā pilikia a me nā hoʻonā 1

Ma muli o ka papa, ʻo kahi mea me ka nui like ʻo…

Lōlā:

Haʻilula o ka nui:

ρ = m / V

ρ = ka nuipaʻa, m = ka nuipaʻa, V = ka nui

Ka nui o ka ʻike - nā pilikia a me nā hoʻonā 2

6. Ma muli o ke kiʻi ma lalo nei, inā he 300 grams ke kaumaha o kahi mea, he aha ka nui o ka mea.

ʻIke ʻia: Ka nui o ka ʻike - nā pilikia a me nā hoʻonā 3

Nuipaʻa (m) = 300 grams

Ka nui (V) = ka nui o ka wai i ninini ʻia = 20 cm ³

Makemake ʻia: ka nui

Lōlā:

ρ = m / V = 300 gram / 20 kenimika ³ = 15 gram/kenimika ³

7. ʻO ke kaumaha o ka mea he 316 grams, i waiho ʻia i loko o kahi pahu e like me ka mea i hōʻike ʻia ma ke kiʻi. He aha ka nui o ka mea.

ʻIke ʻia: Ka nui o ka ʻike - nā pilikia a me nā hoʻonā 4

Nuipaʻa (m) = 316 grams

Ka nui (V) = ka nui o ka wai i ninini ʻia = 40 ml

Makemake ʻia: ka nui

Lōlā:

Nuipaʻa = 316 grams = 316/1000 kg = 0.316 kg

Ka nui = 40 ml = 40/1000 lita = 4/100 lita = 0.04 lita

1 lita = 1 dm3 ⁼ 1/1000 m3 ⁼ 0.001 ^m3

0.04 lita = (0.04)(0.001) m ³ = 0.00004 m ³

Ka nui o ka paʻa:

ρ = m / V = 0.316 kg / 0.00004 m ³ = 316 kg / 0.04 m ³ = 7900 kg/m ³

Ka nui o ka ʻike - nā pilikia a me nā hoʻonā 5 ʻO ke ʻano o ka pōhaku ma muli o ke kiʻi he…

ʻIke ʻia:

Nuipaʻa (m) = 100 grams + 20 grams = 120 grams = 120 / 1000 kilokani = 0.120 kilokani

Ka nui (V) = 80 ml – 60 ml = 20 ml = 20 / 1000 lita = 2/100 lita = 0.02 lita

1 lita = 1 dm3 ⁼ 1/1000 m3 ⁼ 0.001 ^m3

0.02 lita = 0.02 x 0.001 m³ ⁼ 0.00002 ^m³

Makemake ʻia: ka nui

Lōlā:

Ka nui o ka paʻa:

ρ = m / V = 0.120 kg / 0.00002 m ³ = 120 kg / 0.02 m ³ = 6000 kg/m ³

He aha ka nui o ka paʻapū?
- paneʻO ke kaumaha ke ana o ka nui o ka nuipa i loko o kahi leo i hāʻawi ʻia. Ua helu ʻia ma ka puʻunaue ʻana i ka nuipa o kahi mea me kona nuipa: $nuʻa = Volume Ka Mass$ .
Pehea e pili ai ka nui o kahi mea i kona hiki ke lana a piholo paha i loko o ke wai?
- paneE piholo ana nā mea me ka nui o ka paʻa ma mua o ka wai, ʻoiai e lana ana nā mea me ka nui haʻahaʻa ma mua o ka wai.
No ke aha e lana ai kekahi mau mea nui, e like me ka moku nui, i loko o ka wai?
- panePili ia i ka nui i hoʻoneʻe ʻia. ʻOiai he kaumaha ka moku, he ʻano kona e hoʻoneʻe ai i ka nui o ka wai. Inā ʻoi aku ke kaumaha o ka wai i hoʻoneʻe ʻia ma mua o ke kaumaha o ka moku a i ʻole e like me ke kaumaha o ka moku, e lana ka moku.
Pehea ka hopena o ka mahana i ka nui o kahi mea?
- paneMa keʻano laulā, i ka piʻi ʻana o ka mahana, emi ka nui o kahi mea no ka mea neʻe nui aku nā molekala a noho i kahi nui. Aia kekahi mau ʻokoʻa, e like me ka hoʻonui ʻano ʻē o ka wai ma lalo o 4°C.
He aha ke koʻikoʻi o ka nui o ka wai $1 g / cm^{3}$ ?
- pane: Ka waiwai o ka nui o $1 g / cm^{3}$ no ka mea, he pae hoʻohālikelike kūpono ka wai. ʻO nā mea me nā densities ʻoi aku ka nui ma mua o kēia e piholo i loko o ka wai, ʻoiai ʻo nā mea me nā densities liʻiliʻi e lana.
No ke aha e like ai ke kaumaha o nā mea ʻelua akā ʻokoʻa ka nuipaʻa?
- paneHiki ke hana ʻia nā mea ʻelua me nā mea like ʻole (a no laila he ʻokoʻa nā ʻano atomika a molekala paha) a i ʻole hiki iā lākou ke loaʻa nā leo like ʻole. ʻO kahi mea me ka leo nui a me ka nui like me kahi mea liʻiliʻi e loaʻa ka haʻahaʻa o ka density.
Pehea ka hopena o ke kaomi ʻana i kahi kinoea i kona nui?
- paneʻO ka hoʻoomi ʻana i kahi kinoea e hoʻemi ana i kona nui. No ka mea e mau ana ka nuipaʻa, ʻo ka hoʻemi ʻana i ka nui e hoʻonui ai i ka nui o ke kinoea.
No ke aha i manaʻo ai kekahi mau metala kaumaha, e like me ke kēpau, he "kaumaha" ma mua o nā mea ʻē aʻe o ka nui like?
- paneʻO ke "kaumaha" āu e manaʻo ai, ʻo ia ka nui o ke kino. ʻOi aku ka nui o ke kino o ke kēpau ma mua o nā metala ʻē aʻe he nui, no laila ua kaumaha ke ʻano o kahi ʻāpana kēpau ma mua o kekahi metala ʻē aʻe o ka nui like.
Pehea lā e ʻoi aku ai ka mānoanoa o kahi mea ma mua o ka wai akā ʻaʻole e piholo koke ke kau ʻia ma luna o ka ʻili o ka wai?
- paneHiki i ke kaomi ʻili ke kākoʻo i nā mea i ʻoi aku ka mānoanoa ma mua o ka wai, ʻoiai inā he liʻiliʻi ka mea a i ʻole he ʻano hiki ke "hili ʻia" e ka ʻili o ka wai. Eia naʻe, i ka hala ʻana o ka manawa, inā ʻoi aku ka nui o ka mānoanoa o ka mea, e piholo paha ia.
Hiki ke ʻokoʻa ka nui o kahi mea like ma nā wahi like ʻole i loko o ka mea?

paneʻAʻole. No kahi mea like, ua like ka nui o ka density ma loko, ʻo ia hoʻi, he like kona waiwai ma kēlā me kēia wahi i loko o ka mea.