Lub cev puas tuaj yeem muaj lub zog tsis muaj zog muab qhov laj thawj?

Video: Lub cev puas tuaj yeem muaj lub zog tsis muaj zog muab qhov laj thawj?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

Teb thiab piav qhia:

A lub cev ua tsis tau muaj zog tsis muaj muaj zog . Qhov no yog vim tsuas yog cov khoom txav muaj zog , thiab ib yam khoom nyob rau hauv tsab ntawv tsa suab ib txwm muaj kinetic

Yog li ntawd, puas yog ib yam khoom uas muaj zog ib txwm muaj lub zog?

Yog, ib khoom nrog momentum ib txwm hasenergy . Yog tias khoom muaj zog (mv) nws yuav tsum tau tshem, thiab yog tias nws txav nws muaj kinetic zog . No, ib khoom nrog lub zog ua TSIS TAU ib txwm muajmomentum . Txij li qhov no cov khoom velocity = 0, nws lub zog yog zero.

Lub zog kinetic ntawm lub cev hloov li cas yog tias nws lub zog yog ob npaug? K. E. = 1/2 m v^2 where 'K. E.' yog cov kineticenergy ntawm lub cev . Momentum yog ncaj qha rau kev tshaj tawm. Yog tus lub zog ntawm anobject yog ua ob npaug , mas nws pawg ua notincrease, ces nws ceev yog ua ob npaug . IFmomentum ntawm a lub cev yog ua ob npaug ces nws kineticenergy ua 4times nws tus nqi pib.

Lub cev puas tuaj yeem muaj zog txhua yam yog tias nws lub zog yog xoom?

Teb: Momentum yog qhov khoom ntawm huab hwm coj thiab nrawm ntawm a lub cev , rau a lub cev loj yeej tsis muaj xoom tab sis nrawm ua tau ua zero os ib lub cev yog so, Yog li yog ib lub cev yog so nws momentumis zero tab sis yog tias yog nyob rau hauv so ntawm qhov siab nws muaj peev xwm gravitational zog li no mechanical zog.

Dab tsi yog 2 txoj kev sib txawv los sau cov units rau lub zog?

Nws yog qhia lej raws li p = m * v thiab muaj units kg m/s. Lub hauv paus ntsiab lus ntawm kev txuag ntawm lub zog hais tias nyob rau hauv ib tug cais system, ob cov khoom uas sib tsoo muaj qhov sib xyaw ua ke lub zog ua ntej thiab tom qab kev sib tsoo. Muaj peb hom kev sib tsoo.

Pom zoo:

Dab tsi yog qhov laj thawj tseem ceeb uas koj tuaj yeem hnov lub suab nrov nyob deb ntawm dej thaum hmo ntuj?

Qhov kub thiab txias inversion yog vim li cas vim li cas lub suab tuaj yeem hnov ntau dua qhov kev ncua deb ntawm hmo ntuj tshaj li thaum nruab hnub - ib qho cuam tshuam feem ntau tsis raug rau kev puas siab puas ntsws tshwm sim thaum hmo ntuj nyob ntsiag to

Qhov laj thawj twg zoo tshaj plaws piav qhia vim li cas cov hlau tsis muaj ductile es tsis nkig?

Cov hlau yog ductile es tsis txhob nkig vim tias lawv muaj cov ntawv cog lus hloov tau. Ductility txhais tau hais tias muaj peev xwm ntawm cov hlau los kos rau hauv cov xov hlau. Cov hlau muaj cov khoom sib txuas yooj yim. Qhov kev hloov pauv no tso cai rau lawv ua cov khoom siv

Peb puas tuaj yeem pib lub teeb lub raj tsis muaj qhov pib?

Txhawm rau pib lub raj txias yam tsis muaj astarter yuav tsum muaj lwm txoj hauv kev ntawm kev tsim lub tshuab hluav taws xob siab, thiab txij li thaum nyob rau hauv lub raj txias cov mercury vaporhas condensed, qhov no yuav tsum muaj qhov hluav taws xob ntau dua li ua ntej. Buttonce lub raj teeb, nws sov txaus kom vaporize therest ntawm cov mercury

Puas yog nws ua tau rau ib qho kev sib npaug ntawm ob txoj kab sib npaug kom tsis muaj kev daws teeb meem piav qhia koj qhov laj thawj?

Cov kab ke ntawm kab sib npaug tuaj yeem tsuas muaj 0, 1, lossis ib qho kev daws teeb meem tsis kawg. Ob kab no tsis tuaj yeem hla ob zaug. Cov lus teb raug yog tias qhov system muaj ib qho kev daws teeb meem. Total Number of Points Number of 2-Point Baskets Number of 3-Point Baskets 17 4 (8 ntsiab lus) 3 (9 points) 17 1 (2 points) 5 (15 points)