Kuchulukana - mavuto ndi mayankho

Kuchulukana kwa anthu - mavuto ndi mayankho

1. Kuchuluka kwa chinthu ndi 8 cm ³ ndipo kulemera kwa chinthu ndi magalamu 84. Kodi kulemera kwa chinthucho ndi kotani?

Zodziwika:

Voliyumu (V) = 8 cm ³

Kulemera (m) = magalamu 84

Kufunidwa : kachulukidwe (ρ)

Yankho:

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

2. Kuchuluka kwa chipika ndi 5 cm ^3. Ngati kuchuluka kwa chipika ndi 250 g/cm ³ , kulemera kwa chipikacho ndi kotani?

Zodziwika:

Voliyumu (V) = 5 cm ³

Kuchulukana (ρ) = 250 g/ ^cm3

Kufunidwa: Unyinji wa bwalo

Yankho:

ρ = m / V

ρ = kuchuluka, V = voliyumu, m = kulemera

Unyinji wa chipika:

m = ρ V = (250 g/cm ³ )(5 cm ³ ) = 1250 magalamu

3. Kuchuluka kwa madzi ndi 35 cm ³ ndipo kulemera kwa madzi ndi magalamu 60, kuchuluka kwa madzi ndi kotani.

Zodziwika:

Kuchuluka kwa madzi (V) = 35 cm ³

Unyinji wa madzi (m) = magalamu 60

Kufunidwa: kuchulukana (ρ)

Yankho:

kuchulukana:

ρ = m / V = 60/35 = 1.71 magalamu/cm ³

4. Kulemera kwa chitsulo ndi magalamu 120 ndipo voliyumu ya chitsulo ndi 60 cm ^3. Kodi kukhuthala kwa chitsulocho ndi kotani?

Zodziwika:

Kulemera (m) = magalamu 120

Voliyumu (V) = 60 cm ³

Kufunidwa: kuchulukana

Yankho:

ρ = m / V

ρ = 120 magalamu / 60 cm ³

ρ = 2 magalamu/ ^cm3

Kuchulukana kwa anthu - mavuto ndi mayankho 1

Kutengera ndi tebulo, chinthu chokhala ndi kuchuluka komweko ndi…

Yankho:

Fomula ya kachulukidwe:

ρ = m / V

ρ = kuchulukana, m = kulemera, V = voliyumu

Kuchulukana kwa anthu - mavuto ndi mayankho 2

6. Kutengera chithunzi chomwe chili pansipa, ngati kulemera kwa chinthu ndi magalamu 300, kuchuluka kwa chinthucho ndi kotani?

Zodziwika: Kuchulukana kwa anthu - mavuto ndi mayankho 3

Kulemera (m) = magalamu 300

Kuchuluka (V) = kuchuluka kwa madzi otayika = 20 cm ³

Kufunidwa: kuchulukana

Yankho:

ρ = m / V = 300 magalamu / 20 cm ³ = 15 magalamu/cm ³

7. Kulemera kwa chinthucho ndi magalamu 316, kuyikidwa mu chidebe monga momwe chithunzi chikusonyezera. Kodi kulemera kwa chinthucho ndi kotani?

Zodziwika: Kuchulukana kwa anthu - mavuto ndi mayankho 4

Kulemera (m) = magalamu 316

Kuchuluka (V) = kuchuluka kwa madzi otayika = 40 ml

Kufunidwa: kuchulukana

Yankho:

Kulemera = 316 magalamu = 316/1000 kg = 0.316 kg

Kuchuluka = 40 ml = 40/1000 malita = 4/100 malita = 0.04 malita

Lita imodzi = 1 dm ³ = 1/1000 m ³ = 0.001 m ³

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

Kuchulukana:

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

Kuchulukana kwa anthu - mavuto ndi mayankho 5 Kuchuluka kwa miyala kutengera chithunzicho ndi…

Zodziwika:

Kulemera (m) = magalamu 100 + magalamu 20 = magalamu 120 = 120 / 1000 kilogalamu = 0.120 kilogalamu

Kuchuluka (V) = 80 ml – 60 ml = 20 ml = 20 / malita 1000 = malita 2/100 = malita 0.02

Lita imodzi = 1 dm ³ = 1/1000 m ³ = 0.001 m ³

Malita 0.02 = 0.02 x 0.001 m ³ = 0.00002 m ³

Kufunidwa: kuchulukana

Yankho:

Kuchulukana:

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

Kodi kuchulukana kwa zinthu n'chiyani?
- yankhoKuchuluka kwa chinthu ndi muyeso wa kuchuluka kwa kulemera komwe kuli mu voliyumu inayake. Kumawerengedwa pogawa kulemera kwa chinthu ndi voliyumu yake: $kachulukidwe = Volume Misa$ .
Kodi kuchuluka kwa chinthu kumagwirizana bwanji ndi kuthekera kwake kuyandama kapena kumira mumadzimadzi?
- yankhoZinthu zokhala ndi kachulukidwe kokulirapo kuposa madzi zidzamira, pomwe zinthu zokhala ndi kachulukidwe kochepera madzi zidzayandama.
N’chifukwa chiyani zinthu zina zooneka ngati zazikulu, monga sitima yaikulu, zimayandama m’madzi?
- yankho: Zonse zimatengera kuchuluka kwa madzi osunthika. Ngakhale kuti sitimayo ndi yolemera, imakhala ndi mawonekedwe omwe amasuntha madzi ambiri. Ngati kulemera kwa madzi osunthika kuli kwakukulu kapena kofanana ndi kulemera kwa sitimayo, sitimayo idzayandama.
Kodi kutentha nthawi zambiri kumakhudza bwanji kuchuluka kwa chinthu?
- yankhoKawirikawiri, kutentha kukakwera, kuchuluka kwa chinthu kumachepa chifukwa mamolekyu amasuntha kwambiri ndipo nthawi zambiri amakhala ndi voliyumu yayikulu. Pali zosiyana, monga kufalikira kwa madzi pansi pa 4°C.
Kodi kufunika kwa kuchuluka kwa madzi n'chiyani? $1 g / cm^{3}$ ?
- yankho: Kuchuluka kwa kachulukidwe ka $1 g / cm^{3}$ Madzi ndi njira yabwino yodziwira. Zinthu zokhala ndi kuchuluka kwakukulu kuposa izi zidzamira m'madzi, pomwe zomwe zili ndi kuchuluka kochepa zidzayandama.
N’chifukwa chiyani zinthu ziwiri zingakhale ndi kulemera kofanana koma kachulukidwe kosiyana?
- yankhoZinthu ziwirizi zitha kupangidwa ndi zinthu zosiyanasiyana (ndipo motero zimakhala ndi kapangidwe kosiyana ka atomu kapena mamolekyu) kapena zitha kukhala ndi mavoliyumu osiyanasiyana. Chinthu chokhala ndi voliyumu yayikulu komanso kulemera kofanana ndi chinthu chaching'ono chidzakhala ndi kuchuluka kochepa.
Kodi kukanikiza mpweya kumakhudza bwanji kuchuluka kwake?
- yankhoKukanikiza mpweya kumachepetsa voliyumu yake. Popeza kulemera kwake kumakhala kosasintha, kuchepetsa voliyumu kudzawonjezera kuchuluka kwa mpweya.
N’chifukwa chiyani zitsulo zina zolemera, monga lead, zimamveka “zolemera” kuposa zina za kukula kofanana?
- yankho: "Kulemera" komwe mumamva ndi kuchuluka kwa zinthu. Lead ili ndi kuchuluka kwakukulu kuposa zitsulo zina zambiri, kotero chidutswa cha lead chimamveka cholemera kuposa chitsulo china cha voliyumu yomweyo.
Kodi chinthu chingakhale cholemera bwanji kuposa madzi koma osamira nthawi yomweyo chikayikidwa pamwamba pa madziwo?
- yankho: Kukanika kwa pamwamba nthawi zina kumatha kuthandiza zinthu zolemera kuposa madzi, makamaka ngati chinthucho ndi chaching'ono kapena chili ndi mawonekedwe omwe "akhoza kuyikidwa" ndi madziwo. Komabe, pakapita nthawi, ngati kuchuluka kwa chinthucho kuli kwakukulu, mwina chidzamira.
Kodi kuchuluka kwa chinthu chofanana kungakhale kosiyana m'malo osiyanasiyana mkati mwa chinthucho?

yankhoAyi. Pa chinthu chofanana, kuchuluka kwake kumakhala kofanana, zomwe zikutanthauza kuti chili ndi phindu lofanana pamalo aliwonse mkati mwa chinthucho.