physics

Cov cuab yeej siv kho qhov muag - teeb meem thiab kev daws teeb meem Daim iav Concave 1. Ib yam khoom h-siab raug muab tso rau ntawm qhov deb uas me dua qhov ntev f. Txheeb xyuas cov khoom ntawm daim duab. Kev daws teeb meem Raws li daim duab saum toj no, cov khoom ntawm daim duab yog virtual, ncaj thiab loj dua li ib yam khoom. 2. Yog tias ib yam khoom raug muab tso rau ntawm ... nyeem ntxiv

Cov kauj ruam nce thiab nqis transformer - teeb meem thiab kev daws teeb meem 1. Lub transformer muaj lub kauj thawj thiab lub kauj thib ob nrog tus lej ntawm cov voj voog yog 500 thiab 5000. Lub zog nkag yog 220 V. Lub zog tso zis yog dab tsi? Paub: Lub kauj thawj (NP) = 500 voj voog Lub kauj thib ob (Ns) = 5000 voj voog Lub zog thawj (VP) ... nyeem ntxiv

Kev Nyuaj Siab ntawm cov khoom khov - teeb meem thiab kev daws teeb meem 1. Qhov hnyav thiab qhov ntim ntawm plaub lub blocks hauv qab no yog tib yam. Qhov twg yog qhov kev nyuaj siab me dua uas lub block tso rau hauv pem teb? Kev daws teeb meem P = F / A Raws li cov mis no nws tau xaus lus tias kev nyuaj siab (P) yog ncaj qha proportional rau lub zog (F) thiab inversely proportional rau qhov chaw ... nyeem ntxiv

Cov voj voog resistors - teeb meem thiab kev daws teeb meem 1. Cov voj voog resistors twg, raws li pom hauv daim duab hauv qab no, muaj qhov tsis kam loj dua. Teb A R1 = 2 Ω, R2 = 2 Ω, R3 = 6 Ω, R4 = 6 Ω R3 thiab R4 txuas ua ke. Tus resistor sib npaug: 1/R34 = 1/R3 + … nyeem ntxiv

Cov voj voog hluav taws xob - teeb meem thiab kev daws teeb meem 1. R1, = 6 Ω, R2 = R3 = 2 Ω, thiab voltage = 14 volts, txiav txim siab qhov tam sim no hluav taws xob hauv voj voog raws li qhia hauv daim duab hauv qab no. Paub: Resistor 1 (R1) = 6 Ω Resistor 2 (R2) = 2 Ω Resistor 3 (R3) = 2 Ω Voltage (V) … nyeem ntxiv

Kub thiab kev hloov pauv ntawm theem - teeb meem thiab kev daws teeb meem 1. Raws li daim duab, dej 5-kg nqus cua sov li cas thaum lub sijhawm ua haujlwm CD? Cua sov tshwj xeeb ntawm dej = 4,200 J / kg oC. Paub: Qhov hnyav (m) = 5 kg Cua sov tshwj xeeb ntawm dej (c) = 4200 J / kg oC Kub pib (T1) = 0 … nyeem ntxiv

Qhov Ceev - teeb meem thiab kev daws teeb meem 1. Lub ntim ntawm ib yam khoom yog 8 cm3 thiab qhov hnyav ntawm ib yam khoom yog 84 grams. Qhov ceev ntawm yam khoom yog dab tsi? Paub: Ntim (V) = 8 cm3 Qhov hnyav (m) = 84 grams Xav tau: qhov ceev (ρ) Kev daws teeb meem: ρ = m / V = ​​​​84 grams ... nyeem ntxiv

Txoj Cai Pascals - teeb meem thiab kev daws teeb meem 1. Paub: Thaj chaw ntawm A1 = 10 cm2 Thaj chaw ntawm A2 = 100 cm2 Lub zog 2 (F2) = 100 Newtons Xav tau: Lub zog 1 (F1) Kev daws teeb meem: P = F / AP = siab, F = lub zog, A = thaj chaw P1 = F1 / A1 … nyeem ntxiv

Txoj Cai Ohm - teeb meem thiab kev daws teeb meem 1. Raws li lub rooj hauv qab no, kev sib raug zoo ntawm qhov hluav taws xob (V), tam sim no hluav taws xob (I) thiab kev tiv thaiv (R) yog….. Kev daws teeb meem: Txoj Cai Ohm: V = IR lossis R = V / I R1 = V / I = 1.50 / 0.08 = 18.75 Ohm R2 = V / … nyeem ntxiv