Video: Dab tsi rog ua rau cov khoom tsis txav?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Kev sib txhuam yog lub zog uas tawm tsam cov kev taw qhia ntawm cov khoom uas kov thaum lawv tsiv dhau ib leeg. Kev sib txhuam zoo li qub yog lub zog sib txhuam uas ua rau cov khoom tsis txav. Kev sib txhuam zoo ib txwm ua nyob rau hauv cov kev taw qhia tawm tsam ntawm qhov siv zog.
Ib yam li ntawd, ib tug yuav nug, dab tsi rog ua rau cov khoom tsis txav?
Tsis sib npaug zog vim a khoom pib tsiv , nres tsiv , los yog hloov kev taw qhia. Tsis sib npaug zog acting on ib khoom yuav hloov lub cov khoom kev taw qhia. Peb lub ntsiab zog ntawd nres txav khoom yog kev sib txhuam, lub ntiajteb txawj nqus thiab cua tsis kam. Sib npaug zog acting nyob rau hauv opposite lus qhia yog hu ua balanced zog.
Ib yam li ntawd, lub zog dab tsi tuaj yeem ua rau ntawm ib qho khoom? Action-at-a-Distance Forces
- Applied Force.
- Gravitational Force.
- Ib txwm quab yuam.
- Frictional Force.
- Cua Resistance Force.
- Lub zog quab yuam.
- Caij nplooj ntoos hlav Force.
Tsis tas li ntawd, lub zog twg ua rau ntawm ib qho khoom thaum lub zog siv rau nws thiab nws tsis txav?
Thaum peb thov zog ntawm hnyav khoom , tab sis nws tsis budge los ntawm nws qhov chaw, muaj ib zog hu ua kev sib txhuam uas neutralises nws. Kev sib txhuam yog peb hom: kev sib txhuam zoo li qub, txwv kev sib txhuam thiab kev sib txhuam kinetic.
Lub zog cuam tshuam li cas rau kev txav ntawm ib qho khoom?
A zog yog rub, rub, lossis rub rau ntawm ib qho khoom uas cuam tshuam nws kev taw qhia . Qhov kev txiav txim los ntawm a zog can vim a khoom kom ceev, kom qeeb, nres lossis hloov kev taw qhia. Txij li thaum txhua qhov kev hloov pauv hauv qhov nrawm yog suav tias yog acceleration, nws ua tau yuav hais tias a zog on ib khoom ua rau acceleration ntawm ib khoom.
Pom zoo:
Dab tsi yog qhov sib txawv ntawm cov rog yuav cuam tshuam rau kev sib cuam tshuam ntawm cov dej molecules?
1 Teb. Qhov tseeb, dej muaj tag nrho peb hom kev sib xyaw ua ke, nrog qhov muaj zog tshaj plaws yog hydrogen bonding. Txhua yam muaj London dispersion yuam cov kev sib cuam tshuam tsis muaj zog yog ib ntus dipoles uas tsim los ntawm kev hloov ntawm electrons nyob rau hauv ib lub molecule
Yuav ua li cas rau ib qho khoom wavelength thaum cov khoom txav ntawm koj?
Yog tias cov khoom txav mus rau koj, cov waves raug compressed, yog li lawv cov wavelength luv dua. Yog tias qhov khoom txav deb ntawm koj, cov nthwv dej tau nthuav tawm, yog li lawv lub wavelength ntev dua. Cov kab yog hloov mus rau ntev (redder) wavelengths --- qhov no hu ua aredshift
Dab tsi ntawm chromosomes ua cov spindle fibers txuas rau txhawm rau txav cov chromosomes ncig?
Nws thiaj li, cov microtubules txuas los ntawm centrioles ntawm cov ncej ntawm lub xov tooj ntawm tes txuas mus rau txhua lub centromere thiab txhim kho mus rau hauv spindle fibers. Los ntawm kev loj hlob ntawm ib kawg thiab shrinking rau lwm yam, spindle fibers dlhos cov chromosomes raws nruab nrab ntawm lub cell nucleus, kwv yees li equidistant los ntawm spindle ncej
Cov khoom dab tsi ntawm cov dej tso cai rau cov dej los lo rau lub penny?
Kev sib koom tes
Yam dab tsi ntawm cov rog intermolecular yog active nyob rau hauv lub xeev cov kua?
Dab tsi ntawm cov rog intermolecular muaj zog hauv cov kua hauv lub xeev ntawm txhua yam hauv qab no? a) Neon (Ne) yog cov roj zoo. Cov rog uas muaj nyob hauv cov roj atoms thiab cov tsis muaj polar molecules yog hu ua dispersion rog. Yog li, nyob rau hauv cov kua neon dispersion quab yuam yog active