Ib yam khoom muaj peev xwm muaj ob qho tib si kinetic thiab lub zog muaj peev xwm tib lub sijhawm. Piv txwv li, ib yam khoom uas poob, tab sis tseem tsis tau mus txog hauv av muaj lub zog kinetic vim nws txav mus rau hauv qab, thiab lub zog muaj peev xwm vim tias nws muaj peev xwm txav mus rau hauv qab txawm tias nws twb muaj lawm
Teb thiab piav qhia: 9/7 x lub reciprocal = 1. 1 / 9/7 = reciprocal
Dab tsi ua supernova 1987a muaj txiaj ntsig zoo rau kev kawm? Hauv Huab Magellanic loj, peb twb paub nws qhov deb. Nws progenitor tau pom yav dhau los. Nws tshwm sim tom qab lub koob yees duab tshiab, xws li Hubble, tuaj yeem soj ntsuam nws zoo heev
Txoj cai thib peb hais tias rau txhua qhov kev ua, muaj qhov sib npaug thiab sib npaug. Qhov no txhais tau hais tias ib txwm muaj ob lub zog uas zoo ib yam. Lub zog no yog nyob rau hauv qhov tseeb opposite direction
Druzy Crystal Lub ntsiab lus. Druzy siv lead ua yog ib qho kev teeb tsa ntawm ntau cov pob zeb me me rau ntawm qhov chaw ntawm lub cev loj heev. Nyob rau hauv lawv daim ntawv ntuj xim ntawm Druzy pob zeb yuav txawv ntawm yuav luag pob tshab, mus rau translucent thiab opaque
Txhawm rau hloov los ntawm daim ntawv exponential mus rau daim ntawv logarithmic, txheeb xyuas lub hauv paus ntawm qhov kev sib npaug exponential thiab txav lub hauv paus mus rau sab nraud ntawm qhov sib npaug thiab ntxiv lo lus "log". Tsis txhob txav ib yam dab tsi tab sis lub hauv paus, lwm tus lej lossis cov hloov pauv yuav tsis hloov sab
Kev txhais lus Latin. siab kawg. Ntau lo lus Latin rau qhov siab tshaj plaws. maximus adjective. qhov loj tshaj, hlob, siab tshaj, tshaj, siab tshaj
Archaea reproduce asexually los ntawm binary fission, fragmentation, los yog budding. Archaebacteria mus dhau lub voj voog ntawm tes thaum lawv loj hlob thiab tsim. Thaum lawv ncav cuag qhov loj me, lawv rov ua dua ob lub archaebacteria. Thaum lawv feem ntau archaebacteria nyob hauv harshenvironments
Fossils, cov seem ntawm cov tsiaj thiab cov nroj tsuag lub neej, feem ntau pom nyob rau hauv cov pob zeb sedimentary. Ntawm cov pob zeb sedimentary, feem ntau fossils tshwm sim hauv shale, limestone thiab sandstone. Lub ntiaj teb muaj peb hom pob zeb: metamorphic, igneous thiab sedimentary
Qhov no puas pab tau? Yog · Tsis yog
Qhov sib npaug yuav tsum yog y = mx + b daim ntawv. Yog li yog tias koj rho koj y-intercept los ntawm absorbance thiab faib los ntawm txoj kab nqes, koj tab tom nrhiav qhov concentration ntawm koj tus qauv
'Cov dej ntub dej': Cov dej nkag mus rau hauv qhov chaw ua kom lub zog txo tus neeg sawv cev tau qhia. Lub resultant sib tov, nrog nws txo qhov nro, muaj peev xwm nkag mus rau cov khoom kub ntau dua thiab tua hluav taws sib sib zog nqus. Cov khoom no txo qhov nro ntawm cov dej dawb (rau <33 dynes / cm)
Ib yam dab tsi uas yog multicellular yog ib yam kab mob complex, ua los ntawm ntau lub hlwb. Tib neeg yog multicellular. Thaum cov kab mob ib leeg tsis tuaj yeem pom feem ntau yam tsis muaj lub tshuab ntsuas, koj tuaj yeem pom ntau cov kab mob sib kis nrog qhov muag liab qab
Ob qho tseem ceeb tshaj plaws biochemical kev tshwm sim yog photosynthesis thiab cellular respiration. Enzymes yog biochemical catalysts uas ua rau kom cov tshuaj tiv thaiv biochemical. Yog tsis muaj enzymes, feem ntau cov tshuaj tiv thaiv hauv cov khoom muaj sia yuav tshwm sim qeeb dhau los ua kom cov kab mob ciaj sia
Thaum ib qho enzyme khi rau qhov tsim nyog substrate, hloov maj mam hloov hauv qhov chaw nquag tshwm sim. Qhov kev hloov pauv ntawm qhov chaw ua haujlwm no yog lub npe hu ua induced haum. Induced haum txhim kho catalysis, raws li cov enzyme converts substrate rau cov khoom. Kev tso tawm ntawm cov khoom rov ua dua cov enzyme rau nws daim ntawv qub
Lub Ntiaj Teb Loj Tshaj Sycamore Stump. Ib tsob ntoo loj heev sycamore ib zaug sawv ob peb mais sab hnub poob ntawm Kokomo. Nws yog ib puas xyoo dhau los - tsis muaj leej twg paub tias muaj pes tsawg - thaum nws tau poob los ntawm cua daj cua dub, tawm hauv ib lub pob zeb 57 taw ib ncig, 18 ko taw dav, thiab 12 taw siab
4. Newton's 2nd Law ? Txoj cai thib ob ntawm kev txav mus los hais tias kev nrawm yog tsim thaum lub zog tsis sib npaug ua rau ntawm ib qho khoom (ntau). Piv txwv ntawm Newton's 2nd Law? Yog tias koj siv tib lub zog los thawb lub tsheb thiab thawb lub tsheb, lub tsheb yuav muaj kev nrawm dua li lub tsheb thauj khoom, vim tias lub tsheb muaj qhov hnyav dua
Los ntawm moles, koj tuaj yeem nrhiav grams los ntawm kev siv cov molar loj ntawm alum. Thaum kawg, rau % tawm los, nws yuav yog qhov tseeb tawm los (12.77g) muab faib los ntawm qhov theoretical yield (x100%)
Bromine rhuav tshem ob daim ntawv cog lus ntawm cyclohexene (thiab tag nrho cov alkenes), ua rau cov qauv molecular hloov thiab yog li cov molecule lub zog hloov. Bromine yog reactive heev vim hais tias nws tuaj yeem tsim cov dawb radicals, uas txhais tau hais tias muaj ib qho molecule ntawm Br nrog ib qho tsis sib xws ntawm electrons
Myoglobin tsuas muaj ib lub subunit yog li nws tsis muaj quaternary qauv. Cov proteins feem ntau yog cov lus sib txawv yog li lawv muaj thawj, theem nrab, thiab theem nrab, tab sis tsis yog quaternary qauv
Raws li niaj hnub chemistry nws yog cov qauv ntawm cov teeb meem ntawm atomic nplai uas txiav txim siab qhov xwm txheej ntawm cov khoom. Chemistry muaj ntau yam tshwj xeeb uas sib tshooj nrog lwm yam kev tshawb fawb, xws li physics, biology lossis geology. Cov kws tshawb fawb uas kawm chemistry yog hu ua chemists
Qee cov tsiaj thiab cov nroj tsuag tsuas paub rau peb li pob txha. Los ntawm kev kawm cov ntaub ntawv fossil peb tuaj yeem qhia tias lub neej nyob hauv ntiaj teb ntev npaum li cas, thiab cov nroj tsuag thiab tsiaj sib txawv sib txawv li cas. Feem ntau peb tuaj yeem tshawb xyuas seb lawv nyob li cas thiab qhov twg, thiab siv cov ntaub ntawv no kom paub txog thaj chaw qub
Nov yog xya lub tswv yim uas kuv siv los pab cov tub ntxhais kawm daws cov teeb meem lo lus. Nyeem tag nrho lo lus teeb meem. Xav txog lo lus teeb meem. Sau rau lo lus teeb meem. Kos ib daim duab yooj yim thiab sau nws. Kwv yees cov lus teb ua ntej daws. Tshawb xyuas koj txoj haujlwm thaum ua tiav. Xyaum lo lus teeb meem ntau zaus
Kev piav qhia: Hloov milligram mus rau grams. 28.85 mg 1 L × 1 g 1000 mg = 0.028 85 g / L. Hloov ua grams rau moles. Ntawm no, peb yuav tsum paub cov molar loj ntawm cov kua. Xav tias cov kua dej yog sodium chloride (Mr = 58.44). Tom qab ntawd, koj faib los ntawm molar pawg. 0.028 85g 1L × 1 mol58.44g = 4.94 × 10-3mol / L. Teb txuas
Nyob rau hauv lus Askiv, ib tug compound yog ib tug lexeme (tsawg precisely, ib lo lus los yog kos npe) uas muaj ntau tshaj ib tug qia. Compounding, muaj pes tsawg leeg los yog nominal muaj pes tsawg leeg yog cov txheej txheem ntawm lo lus tsim uas tsim cov lexemes compound. Muaj qee qhov tshwj xeeb, cov lus Askiv cov lus sib xyaw ua rau muaj kev ntxhov siab ntawm lawv thawj cov kab ke
Ob qho kev kawm no yog suav nrog. Qhov no txhais tau tias tam sim no muaj plaub qhov kev xeem AP Physics: AP Physics 1. AP Physics 2
Hurricanes churn dej hiav txwv, nqa cov khoom noj xws li nitrogen, phosphate, thiab hlau los ntawm qhov tob ntawm dej hiav txwv thiab qhia lawv mus rau theem saum npoo uas plankton nyob. Twb tau, maj mam ua kom sov dej hiav txwv dej tau tua cov phytoplankton thoob ntiaj teb los ntawm staggering 40 feem pua txij li xyoo 1950
Cov lus teb kom ntxaws: Cov feem 2128 yog sib npaug rau 34. Qhov no yog ib feem zoo ib zaug tus nqi ntawm tus lej sab saum toj lossis tus lej (21) tsawg dua tus nqi ntawm tus lej hauv qab lossis tus lej (28). Qhov feem 2128 tuaj yeem txo
(ˈy?l o?ˌsto?n) n. ib tug dej ntws los ntawm NW Wyoming los ntawm Yellowstone Lake thiab NE los ntawm Montana mus rau Missouri River hauv W North Dakota
Thaum pib ntawm Paleogene Lub Sijhawm yog lub sijhawm rau cov tsiaj txhu uas muaj sia nyob los ntawm Cretaceous Lub Sijhawm. Tom qab lub sijhawm no, cov nas thiab cov nees me, xws li Hyracotherium, muaj ntau thiab rhinoceroses thiab ntxhw tshwm. Thaum lub sij hawm xaus, dev, miv thiab npua ua qhov chaw
Kev tshuaj xyuas cov ntsiab lus, cov khoom sib xyaw, thiab cov khoom sib xyaw Ionic Cov Khoom Siv Covalent Sib Nqus Sib cais rau hauv cov khoom siv hluav taws xob hauv dej kom muab cov kev daws teeb meem uas ua hluav taws xob nyob twj ywm zoo li qub molecule hauv dej thiab yuav tsis ua hluav taws xob
Trigonal Planar yuav yog lub zog qis tshaj plaws (feem ntau qhov chaw tawm) kev teeb tsa ntawm ib qho molecule nrog 3 daim ntawv cog lus. Tab sis txij li ob khub ntawm electrons nyob ntawd, nws tuav lub T-zoo li. Lub EPG rau cov molecule no yog Trigonal Bipyramidal thiab MG yog T-Shaped
Lub xub ntiag ntawm tsuas yog qee cov kab hauv atomic spectra txhais tau hais tias ib lub tshuab hluav taws xob tuaj yeem txais qee qhov kev txiav txim siab lub zog (lub zog yog quantized); li no lub tswv yim ntawm quantum shells. Cov photon zaus absorbed los yog emitted los ntawm ib tug atom yog tsau los ntawm qhov sib txawv ntawm lub zog theem ntawm lub orbits
Txawm li cas los xij, ntawm lub nthwv dej nyob ruaj ruaj, txawm li cas los xij, thaum ob lub nthwv dej sib xyaw ua ke / superimpose rau ib leeg, lawv tsim cov nodes thiab anti-nodes raws li lub wavelength / zaus ntawm nthwv dej. Hais txog theem, ib nthwv dej loj tuaj yeem xav tias yog ib nthwv dej nkaus xwb, yog li tsis muaj theem sib txawv vim nws tsis koom nrog ob lossis ntau dua nthwv dej
Peb pib kawm tias feem ntau yog qib 6. Qib 6 zoo li 'pre-algebra', thiab me ntsis ntawm cov lus qhia txog geometry ib yam nkaus. Qib 7 feem ntau yog algebra, thiab qib 8 yog geometry (nrog ntau cov ntsiab lus tob xws li kev sib xws, kev sib haum xeeb, voj voog, ntim ntawm 3D khoom, thiab lwm yam.)
Ib mole yog cov tshuaj suav tshuaj, xws li 1 mole = 6.022 * 1023 hais. Stoichiometry tseem yuav tsum tau siv cov kev sib npaug sib npaug. Los ntawm qhov sib npaug sib npaug peb tuaj yeem tau txais qhov sib piv mole. Mole ratio yog qhov piv ntawm moles ntawm ib yam khoom rau moles ntawm lwm yam khoom nyob rau hauv ib qho kev sib npaug
Txoj kev sib tshuam x- thiab y-axes faib lub dav hlau sib koom ua plaub ntu. Plaub ntu no hu ua quadrants. Quadrants raug muab npe siv cov lej Roman I, II, III, thiab IV pib nrog rau sab xis sab xis thiab txav mus rau sab xis
Simmons Citrate Agar yog ib qho nruab nrab agar siv rau kev sib txawv ntawm Enterobacteriaceae raws li kev siv citrate ua ib qho ntawm cov pa roj carbon. Thaum xyoo 1920s, Koser tau tsim cov kua nruab nrab rau kev sib txawv ntawm fecal coliforms los ntawm pawg coliform
Lub cell yog lub hauv paus ntawm cov qauv, muaj nuj nqi thiab lub koom haum nyob rau hauv tag nrho cov kab mob. -Txhua lub hlwb tshwm sim los ntawm cov hlwb ua ntej
Kev tawg ntawm decane Qee qhov me me hydrocarbons tsim los ntawm kev tawg yog siv los ua roj (xws li cov saw loj feem ntau tawg los ua octane rau roj av, uas yog qhov xav tau siab), thiab cov alkenes yog siv los ua cov polymers hauv kev tsim cov yas. Qee zaum, hydrogen kuj tsim thaum lub sijhawm tawg