2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Lub wavelength nyob rau hauv ib tug longitudinal yoj yog qhov kev ncua deb ntawm ob lub ntsiab lus sib law liag uas nyob rau theem. Lub wavelength nyob rau hauv ib tug longitudinal yoj yog hais txog qhov kev ncua deb ntawm ob sib law liag compressions los yog ntawm ob sib law liag rarefactions. Lub amplitude yog qhov siab tshaj plaws hloov chaw los ntawm kev sib npaug.
Yuav ua li cas koj pom lub wavelength ntawm ib tug longitudinal yoj?
Nyob rau hauv qhov ntev ntawm nthwv dej, qhov ntsuas wavelength yog ua los ntawm kev ntsuas qhov kev ncua deb ntawm compression mus rau tom ntej compression lossis los ntawm qhov tsis tshua muaj mus rau qhov tsis tshua muaj tom ntej. Ntawm daim duab saum toj no, qhov kev ncua deb ntawm point A rau point C lossis los ntawm point B mus rau taw tes D yuav yog tus sawv cev ntawm lub wavelength.
Puas ntev nthwv dej puas muaj wavelength?
Nyob rau hauv ib lub yoj ntev, cov khoom ntawm cov khoom vibrate rov qab mus rau tib qho kev taw qhia uas yoj mus. Lub wavelength ntawm ib tug longitudinal nthwv dej tuaj yeem ntsuas tau raws li qhov kev ncua deb ntawm ob qhov chaw nyob ib sab, raws li pom hauv daim duab hauv qab no.
Yuav ua li cas yoj nthwv dej nyob qhov twg?
Txhais: Wavelength tuaj yeem txhais tau tias qhov kev ncua deb ntawm ob lub crests lossis troughs ntawm nthwv dej. Nws yog ntsuas nyob rau hauv kev coj ntawm nthwv dej.
Yuav ua li cas piv txwv ntawm yoj transverse?
Ntog ripples ntawm dej, seismic S (secondary) nthwv dej, thiab electromagnetic (xws li xov tooj cua thiab lub teeb) nthwv dej yogpiv txwv ntawm transverse waves. …
Pom zoo:
Qhov khoom nyob rau pem hauv ntej ntawm lub lens diverging nyob qhov twg?
Teb: Dav hlau daim iav Dav Hlau Daim iav Rau lub teeb rays tawm lub dav hlau daim iav, lub lub kaum sab xis ntawm kev xav sib npaug ntawm lub kaum sab xis ntawm qhov xwm txheej. … Daim duab tsim los ntawm daim iav dav hlau yog ib txwm virtual (lub ntsiab lus tias lub teeb rays tsis yog los ntawm daim duab), upright, thiab ntawm tib lub duab thiab loj npaum li cov khoom nws yog reflecting.
Kev tsis ncaj ncees nyob qhov twg yog qhov hem rau kev ncaj ncees nyob txhua qhov chaw?
Martin Luther King tau hais tias: “Kev tsis ncaj ncees nyob txhua qhov chaw yog kev hem thawj rau kev ncaj ncees nyob txhua qhov chaw. Peb raug ntes nyob rau hauv ib tug inescapable network ntawm kev sib nrig sib pab, khi nyob rau hauv ib lub tsoos tsho ntawm txoj hmoo.
Puas yog lub wavelength ntev dua muaj qhov zaus tsawg?
Qhov zaus ntawm nthwv dej yog qhov sib npaug ntawm nws qhov wavelength. Qhov ntawd txhais tau hais tias nthwv dej uas muaj zaus muaj lub wavelength luv, thaum nthwv dej nrog ib zaus tsis tshua muaj wavelength ntev. Yuav ua li cas lub wavelengths muaj zog qis dua?
Qhov twg yog qhov tsis txaus ntseeg nyob qhov twg?
Yuav muaj ob lub cev tsis zoo nyob rau hauv lub midbrain. Lawv yog symmetrically positioned, ib tug nyob rau ntawm ob sab ntawm lub midline ntawm lub hlwb, thiab lawv tsim ob lub pob nyob rau hauv lub posterior nto ntawm lub paj hlwb nyob rau hauv qab ntawm lub superior colliculi.
Qhov twg tag nrho cov nqi hluav taws xob nyob ntawm qhov kev siv nyiaj siab tshaj plaws yog qhov twg?
marginal utility is zero. Tag nrho cov nqi hluav taws xob yog siab tshaj thaum marginal utility yog xoom. Qhov no yog vim muaj ntau txoj cai ntawm kev txo qis marginal utility uas hais tias tus neeg siv khoom noj ntau thiab ntau qhov zoo, qhov ntxiv rau tag nrho cov nqi hluav taws xob poob.
