Video: Ib tus joule sib npaug li cas hauv KG?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Joule (unit) Ib joule sib lub zog ua haujlwm (los yog lub zog siv) los ntawm ib lub zog ntawm ib lub Newton (N) ua haujlwm tshaj qhov deb ntawm ib 'meter' (m). Ib Newton sib npaug ib tug quab yuam uas ua rau ib tug acceleration ntawm ib meter ib ob (s) ib ob ona ib kilogram ( kg ) mas. Yog li ntawd, ib joulequals ib-Newton•meter.
Tsis tas li ntawd, pes tsawg kg nyob rau hauv Joule?
Ib Joule yog sib npaug rau ib kilogram 1 J = 1 kg m2/s2. Nws yog sib npaug rau lub zog kinetic tau txais los ntawm ib qho khoom ntawm qhov loj kilogram uas tau ua kom nrawm nrog kev nrawm ntawm ib 'meter' ib square thib ob tshaj qhov deb ntawm ib 'meter'.
Ib yam li ntawd, chav tsev twg yog kg / m2 s2? SI Derived thiab SI Compatible Units
| Derived Unit | Kev ntsuas | Lus Txhais |
|---|---|---|
| Newton (N) | zog | kg · m-2 |
| Pascal (Pa) | siab | kg · m-1·s-2 |
| joule (J) | zog los yog ua hauj lwm | kg · m2·s-2 |
| watt (W) | zog | kg · m2·s-3 |
Ua raws li qhov no hauv kev xav, dab tsi yog cov units ntawm Joules?
Joule , chav tsev ntawm kev ua haujlwm lossis lub zog hauv International System ntawm Chav tsev (SI); Nws yog sib npaug zos rau qhov ua hauj lwm los ntawm ib tug quab yuam ntawm ib tug newton acting los ntawm ib 'meter'. Lub npe hu ua inhonour ntawm English physicist James Prescott Joule , sib 107 ergs, lossis kwv yees li 0.7377foot-pounds.
Lub zog npaum li cas yog sib npaug rau 1 kg ntawm qhov hnyav?
1) [20 cov ntsiab lus] Einstein qhia tias pawg (M) thiab zog (E) muaj kev sib hloov: E = Mc2, qhov twg c yog qhov ceev ntawm lub teeb. Qhov no txhais tau tias, piv txwv li, tias 1 kilogram ntawm cov khoom yog sib npaug rau ib zog E = ( 1kg ua ) × (3 × 108 m / sec) 2 = 9 × 1016 kg m2 / sec2. Ib zog ntawm 1 kg ib m2/sec2 hu ua 1 joule, forshort.
Pom zoo:
Dab tsi coefficients koj tuaj yeem siv hauv kev sib npaug sib npaug?
Ua ntej: cov coefficients muab cov naj npawb ntawm cov molecules (los yog atoms) koom nrog cov tshuaj tiv thaiv. Hauv qhov piv txwv cov tshuaj tiv thaiv, ob lub molecules ntawm hydrogen react nrog ib molecule ntawm oxygen thiab tsim ob molecules ntawm dej. Thib ob: cov coefficients muab tus naj npawb ntawm moles ntawm txhua yam tshuaj koom nrog hauv cov tshuaj tiv thaiv
Yuav daws qhov tsis sib npaug ntawm cov kab sib npaug thiab cov kab sib npaug sib npaug li cas?
Kev daws qhov tsis sib npaug ntawm qhov sib npaug yog zoo ib yam li kev daws cov kab sib npaug. Qhov sib txawv tseem ceeb yog koj tig lub cim tsis sib xws thaum faib lossis muab faib los ntawm tus lej tsis zoo. Graphing linear inequalities muaj ob peb qhov sib txawv ntxiv. Qhov uas yog qhov ntxoov ntxoo muaj xws li qhov tseem ceeb uas qhov kev tsis sib xws ntawm cov kab tawm muaj tseeb
Puas yog txhua qhov sib npaug sib npaug sib npaug?
Thawj qhov sib npaug sib npaug yog qhov tseeb yog tias nws muaj kev txuag kom muaj nuj nqis. Piv txwv li, qhov sib npaug sib cais yeej ib txwm muaj tseeb, txij li lub ntsiab lus lawv yog ntawm daim ntawv: M(y) + N(t) = 0, yog li ϕ(t, y) = A(y) + B(t) yog a khaws cia kom muaj nuj nqis
Cov coefficients hauv kev sib npaug tshuaj sib npaug qhia koj li cas txog cov reactants thiab cov khoom?
Cov coefficients ntawm kev sib npaug chemicalequation qhia peb cov txheeb ze ntawm moles ntawm reactants thiab cov khoom. Hauv kev daws teeb meem stoichiometric, kev hloov pauv ntawm moles ntawm reactants rau moles ntawm cov khoom raug siv. Hauv kev suav loj, cov molar loj yog xav tau los hloov cov huab hwm coj mus rau moles
Dab tsi yog qhov sib txawv ntawm cov kab lus sib npaug thiab qhov sib npaug sib npaug?
Cov kab lus sib npaug muaj qhov muaj txiaj ntsig zoo ib yam tab sis tau nthuav tawm nyob rau hauv ib hom ntawv sib txawv uas siv cov khoom ntawm cov lej xws li ax + bx = (a + b) x yog cov kab lus sib npaug. nruj me ntsis, lawv tsis yog 'sib npaug', yog li peb yuav tsum siv 3 kab sib luag hauv 'sib npaug' es tsis yog 2 raws li qhia ntawm no