Video: Dab tsi yog qhov nres voltage?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov nres muaj peev xwm yog txhais raws li tus peev xwm tsim nyog rau nres ib qho hluav taws xob (lossis, hauv lwm lo lus, kom nres txawm lub tshuab hluav taws xob nrog lub zog kinetic tshaj plaws) los ntawm 'txog rau sab nraud'. Raws li koj tau hais lawm, qhov siab tshaj plaws kinetic zog yog muab los ntawm.
Tsuas yog li ntawd, dab tsi yog txwv tsis pub muaj peev xwm thiab kev ua haujlwm?
Cov nres muaj peev xwm yog siv peev xwm ua qhov no KE=0. Kinetic Engery (KE) = nres muaj peev xwm * hluav taws xob ntawm ib qho hluav taws xob. KE = h*f - ua haujlwm.
Ib sab saum toj, dab tsi yog qhov nres voltage v0 qhia rau koj hauv kev sim photoelectric effect? Cov nres muaj peev xwm , V0 , yog qhov retarding peev xwm uas tsis muaj electrons ntxiv yog kuaj pom, thiab qhia peb lub zog kinetic ntawm cov hluav taws xob ceev tshaj plaws xws li Kmax = eV0.
Ib sab ntawm qhov no, dab tsi yog lub zog ntawm kev txwv tsis pub muaj peev xwm?
Lub peev xwm nres yog lub peev xwm ( zog / unit charge) ntsuas nyob rau hauv volts (joules / coulomb) uas yuav tsum tau thov kom tsis txhob cov electrons raug ejected los ntawm qhov chaw thaum lub teeb ci rau nws.
Yam xim twg muaj peev xwm nres qhov siab tshaj plaws?
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Pom zoo:
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Puas yog tus nres nres caliper txaus ntshai?
Yog hais tias koj muaj ib tug daig caliper, lub nres nres yuav tsis kiag li disengage los ntawm tus nto ntawm tus nres rotor. Qhov no txhais tau tias koj yuav tsav tsheb nrog cov brakes siv me ntsis txhua lub sijhawm. Kev tsav tsheb nrog lub caliper daig tuaj yeem tsim kev ntxhov siab ntawm kev sib kis, ua rau nws ua tsis tau ua ntej