Indlela imbi selitha yamanzi? Impendulo umbuzo olula

Ephendula umbuzo eqhelekileyo "Yintoni na ubunzima ilitha yamanzi nganye?" Abantu abaninzi baya kubingelela kusityhilela kulawulo okanye nje athi: "ngekhilogram One". Eneneni, xa amaqondo obushushu 40 ⁰ C kwaye phantsi koxinzelelo eziqhelekileyo umoya ngokobunzima welitha enye Yek, oko akanalo naluphi ubumdaka, amanzi kanye 1 kg. Yaye ngubani na oya kuba nako ukuphendula ngokucacileyo lo mbuzo, "Yintoni na ubunzima ityuwa selitha umthombo wamanzi nganye?" okanye "Yintoni inzima ngaphezu kwamanzi - eshushu okanye ebandayo?"

Ukuze ukuba luvaleleke, kufuneka ukuba uwazi eminye imithetho esisiseko physics. Ukuze ube ngaphezu ngqo kanye kufuneka ukhankanye ukuba kweli nqaku nto sithetha thina malunga ubunzima amanzi, yaye umzimba wakhe. Umahluko phakathi la magama kukuba ubunzima - oko luphawu angundoqo mali wenkqu, yaye oko kulinganiswa ngeekhilogram, ubunzima - ixabiso ebonisa amandla ngayo umzimba ayicinezele ezinobunzima ethile ngaphezulu; Iyunithi yokulinganisa - Newton.

Ukuze uphendule umbuzo kangakanani selitha yamanzi ubunzima 1, bona kuqala koko ophuhlisa izalathi si zokunikwa ubunzima bomzimba. Kakade physics, siyazi ukuba akukho nto mkhulu umsebenzi into ezinoxinano kwi 'ngumlingani ka ukukhawulezisa omxhuzulane, malunga efanayo kulo lonke kumphezulu yomhlaba kwaye 9,81 kg / m ^2. Ukuhla nokunyuka kula ubungakanani zombini asinike umahluko ubunzima umbandela efanayo phantsi kweemeko ezahlukileyo.

Okokuqala, makhe sithethe lexinene engamanzi. Njengoko kukhankanyiwe ngasentla, lexinene amanzi acocekileyo phantsi kweemeko eziqhelekileyo 1000 g / m ^3. Ukuba ufaka ubumdaka, ezifana netyuwa, kuyanda nokuxinana, yaye amanzi kuba nzima. Ke ubunzima into, ngokuxhomekeke amaqondo obushushu, nto yonke into le iimpawu zenkqunto luyanda xa itshiswa. Oku kuthetha ukuba umgama phakathi molekyuli igcine, yaye inani lawo elipheleleyo nganye kwiyunithi volume lifinyele, ngoko, le nto iya iba lula. Noko ke, amanzi inomsebenzisi ekhethekileyo - ayanda, kungekuphela ngokutshisa kodwa uzipholisa (kanye ngenxa yamanzi kwemibhobho yamanzi ebusika). Amanzi ukwangowona mmandla unomthamo omkhulu kwi qhwa, kuya kuba lula kunye ezinxaxhileyo scale kancane thermal. Yintoni ubunzima ilitha yamanzi nganye kumaqondo obushushu ahlukileyo, ukuba oyifunayo, ingafunyanwa kuvimba weefayili.

womoya akukho kangako abachatshazelwa ukuhla nokunyuka mass lolwelo lobushushu, yaye ngenxa yokutshiswa layo kwiqondo lobushushu eliphezulu ludweliso. Ngamandla, umgama phakathi molekyuli lifinyele, ukuze, kwelinye kunye nemali umthamo efanayo ezinkulu kweziyobisi. Ngenxa yoko, kukho kunye nokwanda ubunzima. Oku ekulula ukuyibona ku umkhuba, ukuba azilinganise nesilinda lomoya zixinaniswe kwaye itankana zomoya phantsi koxinzelelo eziqhelekileyo.

Hi ndlela leyi, uyazi kangakanani selitha yamanzi ubunzima phezu esibondeni? 0.5 ekhulwini ngaphezu kwi-ikhweyitha. Le meko ibangelwa ukujikeleza koMhlaba ngeenxa axis yayo. Ngenxa yalo, ukunyuka ukukhawulezisa centrifugal njengokuba esondela-ikhweyitha, yaye ngenxa yoko ukwanda ukukhawulezisa womxhuzulane.

Ukuqiqa ngale ndlela, sinako ukubala ubunzima indlela ilitha nganye ulwelo, kwaye eli nani ziya kwahluka ngokuxhomekeke kwiimeko zokusingqongileyo.