Video: Dab tsi yog N hauv 2l N?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
rau sawv nthwv dej nyob rau hauv ib txoj hlua, yog sib npaug rau tus naj npawb ntawm antinodes. lambda = 2 L /. rau sawv nthwv dej nyob rau hauv ib lub raj qhib, yog sib npaug ntawm cov nodes. lambda = 2 L /. rau sawv nthwv dej nyob rau hauv ib lub raj kaw, yog sib npaug ntawm cov nodes.
Ib yam li ntawd, koj tuaj yeem nug, L yog dab tsi hauv cov nthwv dej sawv ntsug?
Rau ib sawv nthwv dej ntawm ib txoj hlua ntawm qhov ntev L nrog ob qhov kawg. L = n(λ/2), n = 1, 2, 3,. Yam Tseem Ceeb: L = λ/2, n = 1, 1/2 wavelength haum rau qhov ntev ntawm txoj hlua. Thib ob harmonic: L = λ n = 2, ib lub wavelength haum rau qhov ntev ntawm txoj hlua.
Kuj Paub, qhov ntev ntawm txoj hlua cuam tshuam li cas rau lub wavelength rau sawv nthwv dej? Cov wavelength yog txiav txim los ntawm cov qhov ntev ntawm txoj hlua nws tus kheej. (Qhov tseem ceeb sawv nthwv dej yuav muaj ib wavelength uas yog ob npaug ntawm qhov ntev ntawm txoj hlua .) Kev hloov pauv ntawm qhov loj ntawm ib chav tsev ntev los yog lub nro nyob rau hauv lub txoj hlua yuav tsim ib tug sib txawv ceev thiab yog li sib txawv zaus ntawm suab.
Hais txog qhov no, koj ua li cas xam qhov ntev ntawm lub wavelength?
Wave speed yog sawv cev los ntawm qhov sib txawv v, zaus (cycles per second) los ntawm f, thiab wavelength (lub voj voog ntev ) los ntawm Greek tsab ntawv λ. Yog li v = f * λ los yog daws rau λ, lub kev sib npaug ua λ = v / f. Wave speed muaj units ntawm kev ncua deb ntawm ib lub sij hawm, piv txwv li, meters ib ob los yog m / s. Ntau zaus muaj units ntawm Hz.
Dab tsi yog qhov sawv nthwv dej ntawm txoj hlua?
Standing Wave on ib txoj hlua . A sawv nthwv dej qauv yog ib qho qauv uas tshwm sim los ntawm kev cuam tshuam ntawm ob lossis ntau dua nthwv dej raws li qhov nruab nrab. Nodes tshwm sim ntawm qhov chaw uas ob nthwv dej cuam tshuam li ntawd yoj yog hloov mus rau sab saud tus nqi uas ib tug thib ob yoj yog hloov chaw downward.
Pom zoo:
Dab tsi yog Qhov Ib Feem Cuam Tshuam ntawm cov khoom hydrogen hauv cov methane ch4 yog dab tsi?
Cov feem pua ntawm cov ntsiab lus los ntawm Element Element Symbol Mass Percent Hydrogen H 25.132% Carbon C 74.868%
Ob qhov tseem ceeb ntawm lub voj voog ntawm tes yog dab tsi thiab dab tsi tshwm sim rau lub cell hauv txhua theem?
Muaj ob theem tseem ceeb hauv lub voj voog ntawm tes. Thawj theem yog interphase thaum lub cell loj hlob thiab replicates nws DNA. Qhov thib ob yog theem mitotic (M-Phase) thaum lub sijhawm cell faib thiab hloov ib daim qauv ntawm nws cov DNA mus rau ob lub hlwb zoo tib yam
Cov kauj ruam ntawm mitosis yog dab tsi thiab dab tsi tshwm sim hauv txhua qhov?
Mitosis muaj tsib theem sib txawv: interphase, prophase, metaphase, anaphase thiab telophase. Cov txheej txheem ntawm cell faib tsuas yog ua tiav tom qab cytokinesis, uas tshwm sim thaum lub sij hawm anaphase thiab telophase. Txhua theem ntawm mitosis yog tsim nyog rau cell replication thiab faib
Dab tsi yog tsib lub hauv paus Circuit Court Cheebtsam lawv lub tsev yog dab tsi?
Cov no yog cov feem ntau siv: resistors. Capacitors. LEDs. Transistors. Inductors. Integrated Circuits
Dab tsi yog 2 qhov tseem ceeb ntawm lub voj voog ntawm tes thiab dab tsi tshwm sim rau lub cell hauv txhua theem?
Cov xwm txheej no tuaj yeem muab faib ua ob qhov tseem ceeb: interphase (hauv nruab nrab ntawm kev sib faib theem ua pawg G1 theem, S theem, G2 theem), thaum lub xov tooj ntawm tes tsim thiab ua nrog nws cov haujlwm metabolic; mitotic theem (M mitosis), thaum lub sij hawm lub cell yog replicating nws tus kheej