Video: Tus qauv ntawm qhov siab tshaj plaws yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Yog hais tias α = 0 °, ces ntsug tshaj tawm yog sib npaug rau 0 (Vy = 0), thiab qhov no yog cov ntaub ntawv ntawm kab rov tav projectile motion. Assine ntawm 0 ° yog 0, ces qhov thib ob ntawm qhov kev sib npaug ploj mus, thiab peb tau txais: hmax = h - pib qhov siab los ntawm qhov peb tab tom tso cov khoom yog qhov qhov siab tshaj plaws inprojectile zog.
Kuj paub, dab tsi yog lub mis rau qhov siab tshaj plaws hauv qhov projectile?
Cov qhov siab tshaj plaws ntawm projectile nyob ntawm qhov pib tshaj tawm v, lub kaum sab xis tso tawm θ, thiab qhov nrawm vim lub ntiajteb txawj nqus. Unit ntawm qhov siab tshaj plaws yog meters (m). θ = lub kaum sab xis ntawm qhov pib tshaj tawm los ntawm lub dav hlau kab rov tav (radians lossis degrees).
Tsis tas li ntawd, tus qauv rau qhov siab hauv physics yog dab tsi? Lub peev xwm lub zog ntawm ib yam khoom loj m ntawm qhov siab h hauv gravitational teb g yog mgh. Yog li 1/2 mv^2 = mgh thiab peb daws rau h. m rho tawm ntawm ob sab ces faib los ntawm g thiab koj tau v^2/2g = h.
Kuj kom paub, koj yuav ua li cas thiaj nrhiav tau qhov siab tshaj plaws ntawm qhov sib npaug plaub npaug?
Peb ua tau txheeb xyuas yam tsawg kawg nkaus los yog siab kawg tus nqi ntawm parabola los ntawm kev txheeb xyuas qhov y-coordinate ntawm vertex. Koj tuaj yeem siv daim duab rau txheeb xyuas lub vertex los yog koj ua tau nrhiav yam tsawg kawg nkaus los yog siab kawg tus nqi algebraically byusing tus qauv x = -b / 2a. Cov qauv no yuav muab rau koj thex-coordinate ntawm vertex.
Qhov ceev ntawm qhov siab tshaj plaws yog dab tsi?
Lub pob attains a qhov siab tshaj plaws H thiab rangeR. Thaum lub projectile ncav cuag qhov siab tshaj plaws , verticalcomponent ntawm nws nrawm yog momentarily zero (vy= 0 m/s).
Pom zoo:
Dab tsi yog rau qhov sib txawv loj ntawm lub koom haum los ntawm qhov tsawg tshaj plaws mus rau loj tshaj plaws ecologists?
Lub koom haum loj yog dab tsi, los ntawm qhov tsawg tshaj plaws mus rau qhov loj, uas cov kws tshawb fawb feem ntau kawm? 6 theem sib txawv ntawm lub koom haum uas ecologists nquag kawm yog hom, pejxeem, zej zog, ecosystem, thiab biome
Tus qauv ntsuas kub thiab siab yog dab tsi Vim li cas tus qauv tsim nyog?
Cov txheej txheem siv cov txheej txheem yog qhov tseem ceeb rau kev qhia txog cov kua dej ntws thiab qhov ntim ntawm cov kua thiab cov pa roj, uas yog nyob ntawm qhov kub thiab txias. STP feem ntau yog siv thaum cov txheej txheem hauv xeev raug siv rau kev suav
Dab tsi yog qhov yuam kev loj tshaj plaws yog tias Irina ntsuas qhov ntev ntawm nws lub qhov rais li 3.35 feet qhov yuam kev loj tshaj plaws yog taw?
Kev daws: Qhov yuam kev loj tshaj plaws hauv kev ntsuas ntsuas tau txhais tias yog ib nrab ntawm qhov ntsuas ntsuas
Tus qauv qauv yog dab tsi Qhov txawv ntawm tus qauv qauv thiab tus qauv molecular yog dab tsi?
Cov mis mos molecular siv cov cim tshuaj thiab cov ntawv sau npe los qhia cov naj npawb ntawm cov atoms sib txawv hauv cov molecule lossis compound. Ib qho empirical formula muab qhov yooj yim tshaj plaws, tag nrho tus lej piv ntawm atoms hauv ib qho chaw. Cov qauv qauv qhia txog kev sib koom ua ke ntawm cov atoms hauv cov molecule
Dab tsi yog qhov siab tshaj plaws ntawm qhov poob siab tso cai rau hauv av xaim?
NEC pom zoo tias qhov siab tshaj plaws ua ke voltage poob rau ob qho tib si feeder thiab ceg Circuit Court yuav tsum tsis txhob ntau tshaj 5%, thiab qhov siab tshaj plaws ntawm lub feeder lossis ceg Circuit Court yuav tsum tsis txhob ntau tshaj 3% (Fig. 1). Qhov kev pom zoo no yog qhov teeb meem kev ua haujlwm, tsis yog teeb meem kev nyab xeeb