Gurumuda Networks
Cov voj voog hluav taws xob nrog cov resistors hauv kev sib luag thiab kev tiv thaiv sab hauv - teeb meem thiab kev daws teeb meem
1. Raws li daim duab hauv qab no, yog tias qhov chaw ntawm lub zog hluav taws xob (emf) yog 24 Volts, txiav txim siab tam sim no I.
Paub:
Qhov chaw ntawm emf = 24 Volt
Kev tiv thaiv sab hauv (r) = 2 Ohms
Cov resistors muaj 40 ohms, 20 ohms, thiab 20 ohms.
Kev suav ntawm kev siv hluav taws xob los ntawm cov cuab yeej hluav taws xob - teeb meem thiab kev daws teeb meem
1. Hauv ib lub tsev, muaj 5 lub teeb 25 Watt siv 14 teev hauv ib hnub, lub tub yees 200 Watt siv 24 teev hauv ib hnub, thiab lub twj tso dej 125 Watt siv 8 teev hauv ib hnub. Siv hluav taws xob ntau npaum li cas rau ib hlis (30 hnub)?
Paub:
Lub zog ntawm lub teeb = 5(25) = 125 Watt thiab lub sijhawm siv = 14 teev x 30 = 420 teev
Lub zog ntawm lub tub yees = 200 Watts thiab lub sijhawm siv = 24 teev x 30 = 720 teev
Lub zog ntawm lub twj tso dej = 125 Watts thiab lub sijhawm siv = 8 teev x 30 = 240 teev
Cov hom nqi hluav taws xob - teeb meem thiab kev daws teeb meem
1. Raws li tus lej ntawm cov nqi hluav taws xob hauv qab no.
Cov khoom A thiab D muaj hluav taws xob tsis zoo (-), khoom A rub khoom B thiab thawb khoom C, khoom D thawb E. Txheeb xyuas hom hluav taws xob ntawm cov khoom B, C, thiab E.
A. Zoo, Zoo, Tsis Zoo
B. Tsis zoo, Tsis zoo, Zoo
C. Zoo, Tsis zoo, Tsis zoo
D. Zoo, Tsis Zoo, Zoo
6 Lub Tshuab Yooj Yim (Lub Lever Ntsug) - Teeb Meem thiab Kev Dais Teeb Meem
1.
Lub dav hlau inclined twg muaj qhov zoo sib xws ntawm cov khoom siv kho tshuab
Pom kev ze thiab pom kev deb - teeb meem thiab kev daws teeb meem
1. Ib tug me nyuam uas tsis pom kev zoo nyeem tau phau ntawv ntawm qhov ze li ntawm 1 'meter'. Yuav kom nyeem tau ntawm qhov deb li ntawm 25 cm, txiav txim siab seb tus me nyuam yuav tsum siv lub zog ntawm lub lens.
Tshuaj:
Tus me nyuam muaj teeb meem pom kev deb , qhov chaw ze ntawm nws lub qhov muag yog 1 meter lossis 100 cm. Qhov chaw ze ntawm lub qhov muag ib txwm yog 25 cm. Lub qhov muag tuaj yeem kho kom zoo li qub los ntawm lub lens convex.
Lub zog Kinetic - Teeb meem thiab kev daws teeb meem
1. Ob lub tsheb muaj tib lub cev hnyav , txav mus los nrog lub zog kinetic sib txawv. Lub zog kinetic ntawm lub tsheb thawj zaug yog 9 npaug ntawm lub zog kinetic ntawm lub tsheb thib ob. Kev sib piv ntawm lub tsheb thawj zaug nrog lub tsheb thib ob yog…..
Paub:
Qhov hnyav ntawm lub tsheb A (m A ) = m
Qhov hnyav ntawm lub tsheb B (mB ) = m
Lub zog kinetic ntawm lub tsheb B (K E B ) = K E
Lub zog kinetic ntawm lub tsheb A (KE A ) = 9 KE
Kev ceev ntawm cov nthwv dej transverse - teeb meem thiab kev daws teeb meem
1.
Yog tias lub sijhawm uas yuav tsum tau mus ncig ntawm A mus rau B yog 2 vib nas this, txiav txim siab qhov ceev ntawm nthwv dej transverse.
Paub:
Qhov Nrug Deb AB = 6 meters ib ob
Lub sijhawm sib nrug AB = 2 vib nas this
Xav tau: Qhov ceev ntawm cov nthwv dej transverse
Cov nqi thiab cov chav ntsuas uas tau los ntawm kev suav - cov teeb meem thiab cov kev daws teeb meem
1.
Radioactivity - Cov teeb meem thiab kev daws teeb meem
1. Raws li daim duab hauv qab no, cov dej num radioactive tom qab lwj rau 13.86 teev yog ...
Paub:
Ib nrab ntawm lub neej (T 1/2 ) = 6.93 teev
Lub Sijhawm-lapse (t) = 13.86 teev
Xav tau: kev ua haujlwm radioactive
Micrometer ntsia hlau - teeb meem thiab kev daws teeb meem
1. Qhov ntsuas ntawm txoj kab uas hla ntawm cov hlau nrog lub micrometer yog 2.48 hli. Daim duab sib raug rau qhov ntsuas tau yog…
Tshuaj: