General Astronomy Questions Qhov txawv ntawm astronomy thiab astrology yog dab tsi? Kuv puas xav tau lub koob yees duab kim kim kom txaus siab rau astronomy? Lub telescope ua haujlwm li cas? Vim li cas kuv tsis tuaj yeem pom ntau lub hnub qub thaum hmo ntuj? Qhov chaw pib qhov twg? Vim li cas lub ntuj thiaj xiav? Vim li cas lub ntuj tsaus tsaus ntuj? Qhov ceev ntawm lub teeb yog dab tsi?
Cov khoom siv. Parallel circuits yog siv nyob rau hauv ntau yam khoom siv hluav taws xob thiab khoom siv. Lub ntsiab yog vim li cas parallel circuitry yog siv nyob rau hauv cov ntsiab lus no yog coj kom zoo dua ntawm ntau tshaj ib lub hwj chim qhov chaw, zoo li thaum ntau tshaj ib lub roj teeb yog siv nyob rau hauv ib tug portable ntaus ntawv
Gondwana. Gondwana, tseem hu ua Gondwanaland, ancient supercontinent uas suav nrog tam sim no South America, Africa, Arabia, Madagascar, India, Australia, thiab Antarctica
2 Teb. Lub polarity ntawm dej molecules txhais tau hais tias molecules ntawm dej yuav lo rau ib leeg. Qhov no hu ua hydrogen bonding. Polarity ua rau dej ua kuab tshuaj zoo, muab lub peev xwm los lo rau nws tus kheej (cohesion), lo rau lwm yam khoom (adhesion), thiab muaj qhov nro (vim hydrogen bonding)
Tsis tas li ntawd, cov molecule tsis muaj hydrogen atoms sib txuas rau nitrogen, oxygen, lossis fluorine; txiav txim tawm hydrogen bonding. Thaum kawg, muaj ib qho dipole tsim los ntawm qhov sib txawv ntawm electronegativity ntawm carbon thiab fluorine atoms. Qhov no txhais tau tias fluoromethane molecule yuav muaj zog dipole-dipole
Geography yog ib tug kws tshawb fawb uas nws cheeb tsam ntawm kev kawm yog geography, kev kawm ntawm lub ntiaj teb lub ntuj ib puag ncig thiab tib neeg lub neej. Lub Greek prefix 'geo' txhais tau hais tias 'lub ntiaj teb' thiab Greek cov lus tom qab, 'graphy,' lub ntsiab lus ' piav qhia,' yog li tus kws qhia thaj chaw yog ib tus neeg kawm txog lub ntiaj teb
Lub sijhawm lig blight ntawm qos yaj ywm thiab txiv lws suav, tus kab mob uas yog lub luag haujlwm rau Irish qos yaj ywm kev tshaib kev nqhis nyob rau hauv nruab nrab-19th caug xyoo, yog tshwm sim los ntawm fungus zoo li oomycete pathogen Phytophthora infestans. Nws tuaj yeem kis tau thiab rhuav tshem cov nplooj, stems, txiv hmab txiv ntoo, thiab tubers ntawm qos yaj ywm thiab txiv lws suav
Muab cov yoj lub wavelength los ntawm ib billion, uas yog tus naj npawb ntawm nanometers hauv ib 'meter'. Nrog rau qhov piv txwv no, muab 2.82 x 10^-7 los ntawm 10^9 kom tau 282, lub wavelength hauv nanometers
Definition of ntxhais element. Lub caij tsim thaum lub caij muaj hluav taws xob muaj hluav taws xob tawg. Cov tom kawg hu ua niam txiv. Tus ntxhais yuav los yog tsis muaj xov tooj cua. Ref: CCD, 2
Passive kev thauj mus los hla ib qho concentration gradient, los yog qhov sib txawv me ntsis hauv cov concentration ntawm ob qhov chaw. Facilitated diffusion yog diffusion siv cov cab kuj los yog channel cov proteins nyob rau hauv lub cell membrane uas pab nyob rau hauv lub zog ntawm molecules nyob rau hauv ib tug concentration gradient
Sodium yog nyob deb ntawm qhov tseem ceeb tshaj plaws alkali hlau nyob rau hauv cov nqe lus ntawm kev lag luam siv. Cov hlau yog ua hauj lwm hauv kev txo cov organic tebchaw thiab nyob rau hauv kev npaj ntawm ntau yam lag luam tebchaw. Raws li cov hlau dawb, nws yog siv los ua cov kua hluav taws xob hloov pauv hauv qee lub tshuab hluav taws xob nuclear
Comets feem ntau muaj ntau lub voj voog ntev dua li lub hnub qub, yog li cov comets txav nrawm dua li lub hnub qub thaum lawv mus ze rau lub hnub. Comets feem ntau muaj ntau lub voj voog ntev dua li lub hnub qub, yog li cov comets txav nrawm dua li lub hnub qub thaum lawv mus ze rau lub hnub
Hauv cov tshuab ua kua dej, kev hloov pauv tshwm sim thaum ib qho khoom siv ntau rau hauv cov kua dej, thawb nws tawm ntawm txoj kev thiab coj nws qhov chaw. Yog li buoyancy yog qhia los ntawm Archimedes 'txoj cai, uas hais tias qhov hnyav ntawm cov khoom raug txo los ntawm nws qhov ntim ntau los ntawm qhov ntom ntawm cov kua
Qhov no tshwm sim thaum tus txheej txheem hu ua mitosis. Mitosis yog cov txheej txheem ntawm kev faib cov cell cov khoom siv caj dab rau hauv ob lub nuclei tshiab
Absolute magnitude (M) yog ib qho kev ntsuas ntawm lub luminosity ntawm lub hnub qub khoom, nyob rau hauv lub inverse logarithmic astronomical magnitude scale. Piv txwv li, lub hnub qub ntawm qhov tseeb MV = 3.0 yuav yog 100 lub sij hawm ntau luminous tshaj lub hnub qub ntawm qhov tseeb MV = 8.0 raws li ntsuas hauv V lim band
Tropical grasslands kuj hu ua tropical savannas. Ib tug savanna yog lwm lo lus rau 'dawb. '
Cov tshuaj ncua kev kawm ntawv yog ib coarse dispersion ntawm insoluble khoom hais nyob rau hauv ib tug kua nruab nrab. Lub particle txoj kab uas hla nyob rau hauv lub ncua kev kawm ntawv feem ntau yog ntau tshaj 0.5 µm. Suspensions yog ib qho tseem ceeb ntawm cov ntaub ntawv tshuaj noj
Hauv cov nroj tsuag kab lis kev cai, kev loj hlob regulator muaj lub luag haujlwm tseem ceeb xws li tswj cov hauv paus thiab tua kev loj hlob hauv cov nroj tsuag tsim thiab callus induction. Cytokinin thiab auxin yog ob txoj kev loj hlob zoo
Pulsars yog rotating neutron hnub qub pom tias muaj pulses ntawm hluav taws xob ntawm lub sijhawm tsis tu ncua uas feem ntau yog li ntawm milliseconds mus rau vib nas this. Pulsars muaj cov hlau nplaum muaj zog heev uas funnels dav hlau ntawm cov khoom tawm raws li ob tus ncej sib nqus. Cov khoom nrawm no tsim cov kab teeb muaj zog heev
Qhov no feem ntau tshwm sim tob hauv lub ntiaj teb los yog ze ntawm magma hauv av. Peb feem ntau pom cov pob zeb metamorphic nyob rau hauv cov roob uas muaj kev kub ntxhov siab ua rau cov pob zeb ua ke thiab lawv tau sib sau ua ke los tsim ntau yam xws li Himalayas, Alps, thiab Rocky Toj siab
Thaum lub teeb pruning tuaj yeem ua tau txhua lub sijhawm thoob plaws hauv lub xyoo, nws yog qhov zoo tshaj kom tawm txhua qhov loj shearing lossis hnyav pruning rau lub caij ntuj no lig lossis caij nplooj ntoos hlav thaum ntxov. Ntawm chav kawm, ntau ntawm viburnum pruning nyob ntawm ntau yam cog thiab. Feem ntau, pruning tsuas yog tom qab flowering tab sis ua ntej qhov chaw ntawm seedpods yog txaus
1 Teb Nyob rau hauv ib qho sector, muaj 3 qhov yuav tsum tau xav txog: Qhov ntev arc yog ib feem ntawm lub voj voog.Thesector cheeb tsam yog ib feem ntawm tag nrho cheeb tsam. Thesectorangle yog ib feem ntawm 360 ° Yog hais tias lub sector yog 20% ntawm daim ntawv ncuav qab zib, ces cov khoom no yog 20% ntawm tag nrho. 20% × 360 ° 20100 × 360 = 72 °
Cov qauv ntawm lub voj voog yog muab hauv qab no: (x – h) 2 + (y – k) 2 = r2, qhov chaw nyob ntawm (h, k) thiab r yog qhov ntev ntawm lub vojvoog. Hauv qhov no, h yuav yog -3, k yuav yog 6, thiab r yuav yog 5
1) Lub ntiaj teb loj tshaj plaws yog dab tsi? 2) Lub teb chaws twg chais-nyias muaj ntau tshaj li ib nrab ntawm sab hnub poob ntug dej hiav txwv ntawm South America? 3) Dab tsi dej ntws hla Baghdad? 4) Lub teb chaws twg muaj lub pas dej ntuj tshaj plaws? 5) Lub hiav txwv nkaus xwb uas tsis muaj ntug hiav txwv dej yog dab tsi? 6) Qhov feem pua ntawm tus Dej Nile nyob hauv Egypt?
Static Height yog qhov siab tshaj plaws mus txog los ntawm cov yeeb nkab tom qab lub twj tso kua mis (tseem hu ua 'tawm taub hau'). Static Lift yog qhov siab uas cov dej yuav nce siab ua ntej tuaj txog ntawm lub twj tso kua mis (tseem hu ua lub taub hau nqus). TDH kuj tseem yog cov haujlwm ua los ntawm lub twj tso kua mis ib chav tsev qhov hnyav, ib chav tsev ntim dej
Cov cai rau kev khaws tshuaj chemical Label tag nrho cov ntim tshuaj. Muab qhov chaw cia tshwj xeeb rau txhua yam tshuaj, thiab xyuas kom rov qab los tom qab siv txhua qhov. Khaws cov tshuaj lom tsis haum thiab cov tshuaj tsw qab hauv cov khoom cua. Khaws cov kua hluav taws xob hauv cov khoom siv hluav taws xob uas tau pom zoo
Ib puag ncig ua rau Pine Tree Browning Nyob rau xyoo uas hnyav los nag los yog huab cua qhuav heev, ntoo thuv tuaj yeem xim av. Browning feem ntau tshwm sim los ntawm qhov tsis muaj peev xwm ntawm tsob ntoo ntoo kom muaj dej txaus kom nws cov koob muaj sia. Thaum cov dej noo ntau dhau thiab cov kua dej tsis zoo, cov cag rot feem ntau yog qhov ua txhaum
Muaj pes tsawg lub quarts dej ntawm cov dej ntsuas hauv 1 phaus dej? Cov lus teb yog: Qhov kev hloov ntawm 1 lb (phaus dej) chav nyob hauv qhov ntsuas dej ntsuas sib npaug = rau hauv 0.48 qt (kua quart dej) raws li qhov sib npaug ntsuas thiab rau tib hom kev ntsuas dej
Los yog, cov ntxhia los yog ib qho sib xyaw ntawm cov ntxhia los ntawm cov khoom tseem ceeb, tshwj xeeb tshaj yog cov hlau, tuaj yeem tau txais txiaj ntsig zoo los yog rho tawm yog cov ore. Hlau - Ib qho hlau ntawm ob lossis ntau dua hlau. Yog li ntawd, pob zeb muaj cov zaub mov, uas nyob rau hauv loj concentration yog hu ua ores thiab cov no yog mined rau hlau
Piv txwv ntawm microstates nkag siab tias niaj hnub tiv thaiv xeev suav nrog cov xeev xws li Liechtenstein, San Marino, Monaco, Niue, Andorra, Cook Islands lossis Palau
Kev soj ntsuam tsis paub tseeb yog ib qho txheej txheem uas txheeb xyuas qhov ntau npaum li cas, raws li qhov tsis paub tseeb hauv qhov kev sim ntsuas qhov ntsuas uas tau siv rau hauv qee hom kev sib raug zoo ntawm lej ('qauv') los xam cov khoom uas tau muab los. Kev tsom xam tsis paub tseeb feem ntau hu ua 'kev nthuav tawm ntawm qhov yuam kev.'
Receptors feem ntau yog transmembrane proteins, uas khi rau kev taw qhia cov molecules sab nraum lub xovtooj ntawm tes thiab tom qab ntawd xa cov teeb liab los ntawm ib ntu ntawm cov hloov pauv molecular mus rau hauv cov kev taw qhia sab hauv. Ib qho acetylcholine receptor (ntsuab) tsim ib qho gated ion channel hauv cov ntshav plasma
George Ohm. Georg Simon Ohm yog German physicist, paub zoo tshaj plaws rau nws "Ohm'sLaw", uas hais tias tam sim no ntws los ntawm cov conductors ncaj qha proportional rau lub peev xwm sib txawv (voltage) thiab inversely proportional to the resistance
Qhov sib faib coefficient yog qhov sib piv ntawm qhov concentration ntawm cov khoom nyob rau hauv ib qho nruab nrab lossis theem (C1) rau cov concentration hauv theem thib ob (C2) thaum ob qhov kev sib npaug ntawm qhov sib npaug; uas yog, muab faib coefficient = (C1/C2)equil. Cov units ntawm C1 thiab C2 yuav txawv
Geographical Features yog dab tsi? Ib qho kev sib tham ntawm ntau yam geographical lossis geophysical nta. Cov yam ntxwv sib tham yog: Plateaus, suab puam, deltas, mesas, phiab, foothills, marshes, thiab swamps. Plateaus yog thaj chaw siab uas tiaj tus
Atoms yog indivisible thiab indestructible. Tag nrho cov atoms ntawm ib lub ntsiab yog zoo ib yam nyob rau hauv loj thiab zog. Cov tshuaj yog tsim los ntawm kev sib xyaw ntawm ob lossis ntau hom atoms sib txawv. Cov tshuaj tiv thaiv tshuaj yog ib qho kev hloov ntawm cov atoms
Tsawg dua los yog ntau npaum li cas
Hauv chemistry, kev sib hloov tshwj xeeb ([α]) yog cov cuab yeej ntawm cov tshuaj chiral. Yog hais tias lub compound muaj peev xwm tig lub dav hlau ntawm polarization ntawm lub dav hlau-polarized lub teeb, nws tau hais tias yog "optically active". Kev sib hloov tshwj xeeb yog cov cuab yeej siv zog, qhov txawv ntawm qhov tshwm sim ntau dua ntawm kev hloov kho qhov muag
Cov mis uas txuas lub zog thiab lub zog yog: Zog = Lub Zog x Sijhawm. Chav tsev ntawm lub zog yog joule, lub zog ntawm lub zog yog watt, thiab chav tsev ntawm lub sijhawm yog qhov thib ob
Piv txwv li, nyob rau hauv nws cov compounds txhuas ib txwm muaj oxidation lub xeev ntawm +3. [Al(H2O)6]3+ feem ntau tsuas yog hu ua hexaaquaaluminium ion es tsis yog hexaaquaaluminium(III) ion. Rau qhov tsis zoo them nqi complex ions. Ib tug tsis zoo them nyiaj complex ion hu ua ib tug anionic complex. Ib qho anion yog ib qho tsis zoo them ion