Cov txheej txheem:
Video: Yuav ua li cas koj hloov cov units rau feem feem?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov ntsiab lus
- Sau tus hloov dua siab tshiab as a feem (uas sib npaug ib)
- Muab nws tawm (tawm tag nrho units hauv cov lus teb)
- Ncua tseg units uas yog ob sab saum toj thiab hauv qab.
Ua li no, koj yuav hloov cov chav sib txawv li cas?
Txoj Kev 2 Hloov cov nqi nrog ntau chav
- Sau koj qhov teeb meem.
- Nrhiav qhov hloov dua siab tshiab rau ib chav.
- Muab koj tus lej los ntawm qhov hloov dua siab tshiab.
- Tshem tawm koj cov units.
- Ntxiv nrog rau lwm qhov hloov dua siab tshiab ib yam nkaus.
- Tso tseg units.
- Rov ua dua kom txog thaum hloov dua siab tshiab.
Ib yam li ntawd, dab tsi yog 7 qhov tseem ceeb ntawm kev ntsuas? Cov 7 Base Metric Chav tsev Lub metric system yog lub ntsiab system ntawm ntsuas ntsuas ntsuas siv nyob rau hauv science. Txhua chav tsev yog suav tias yog dimensionally ywj siab ntawm lwm tus. Cov qhov ntev no yog kev ntsuas ntawm qhov ntev, qhov hnyav, lub sijhawm, hluav taws xob tam sim no, qhov kub thiab txias, tus nqi ntawm cov khoom siv, thiab qhov luminous siv.
Hauv qhov no, koj ua li cas hloov ib chav tsev ntawm qhov ntev mus rau lwm qhov?
Rau hloov qhov ntev los ntawm ib unit rau lwm : muab faib los ntawm tus lej raug. Ua raws li cov kauj ruam no: Nrhiav qhov tseeb hloov dua siab tshiab tus lej (saib Kev hloov dua siab tshiab Kab kos) Ces muab tus lej ntawd.
Lub ntsiab lus ntawm unit yog dab tsi?
Cov me nyuam txhais ntawm chav tsev 1: ib yam, ib tug neeg, los yog pab pawg ua ib feem ntawm tag nrho Muaj 36 units hauv kuv lub tsev apartment. 2: tus lej tsawg kawg nkaus: ib. 3: ib qho ruaj khov (raws li qhov ntev, sijhawm, lossis tus nqi) siv los ua tus qauv ntsuas Ib nti yog ib qho chav tsev ntawm qhov ntev.
Pom zoo:
Yuav ua li cas koj hloov cov units me mus rau cov units loj?
Hloov cov chav me me mus rau cov chav loj loj dua chav tsev loj. Txhawm rau hloov los ntawm chav tsev loj dua mus rau ib qho me me, sib npaug. Txhawm rau hloov los ntawm chav tsev me mus rau qhov loj dua, faib
Yuav ua li cas koj sau ib feem raws li ib tug khoom ntawm ib tug tag nrho cov zauv thiab ib feem feem?
Cov cai los nrhiav cov khoom ntawm ib feem feem thiab tag nrho tus lej Peb xub sau tag nrho cov lej ua ib feem, piv txwv li, sau nws faib los ntawm ib qho; Piv txwv li: 7 yog sau ua 71. Peb mam li muab cov zauv. Peb muab cov denominators. Yog tias yuav tsum tau ua kom yooj yim, nws ua tiav thiab tom qab ntawd peb sau cov feem kawg
Yuav ua li cas koj hloov ntawm units ntawm lub zog?
Cov chav fais fab tuaj yeem hloov mus rau lub zog units los ntawm kev sib npaug ntawm vib nas this [s], teev, [h], lossis xyoo [yr]. Piv txwv li, 1 kWh [kilowatt teev] = 3.6 MJ [MegaJoule]. Nrog 1 kWh, txog 10 liv dej tuaj yeem ua kom sov los ntawm 20 ºC mus rau qhov kub kub
Txoj cai thermodynamic twg hais tias koj Tsis tuaj yeem hloov 100 feem pua ntawm cov cua sov rau hauv cov khoom siv hluav taws xob ntawm cov lus teb xaiv?
Txoj Cai thib ob
Yuav ua li cas koj hloov ib feem mus rau ib feem?
Txhawm rau hloov 4/5 mus rau ib feem pua, teeb tsa 4/5 = x% / 100. Feem ntau yuav crossmultiply. Muab cov zauv ntawm feem ntawm sab laug los ntawm tus lej ntawm feem ntawm sab xis: 4 * 100 = 400