Video: Yuav ua li cas koj pom joules los ntawm wavelength?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Qhov sib npaug rau kev txiav txim siab lub zog ntawm photon ofelectromagnetic hluav taws xob yog E = hν, qhov twg E yog lub zog hauv Joules , h yog Planck qhov tas li, 6.626 × 10−34J⋅s, thiab ν (pronounced "noo") yog qhov zaus. Koj tau muab rau wavelength λ (hais lus lambda) hauv nanometers, tab sis tsis yog qhov zaus.
Ib yam li ntawd, koj tuaj yeem nug, koj pom cov joules li cas?
Multiply watts los ntawm vib nas this kom tau joules ua . 1 Watt ntaus ntawv siv 1 Joule ntawm lub zog txhua 1 vib nas this. Yog tias koj muab tus lej ntawm watts los ntawm tus lej thib ob, koj yuav xaus nrog joules ua . Rau nrhiav tawm ntau npaum li cas lub zog 60W lub teeb siv hauv 120 vib nas this, yooj yim multiply (60 watts) x (120 vib nas this) = 7200 Joules.
tus qauv rau zaus yog dab tsi? Cov qauv rau zaus yog: f( zaus ) = 1 / T (lub sijhawm). f = c / λ = yoj speedc (m/s) / wavelength λ (m). Cov qauv rau lub sij hawm yog: T (lub sij hawm) = 1 / f ( zaus ). λ = c / f = wavespeed c (m / s) / zaus f (Hz).
Ib tug kuj yuav nug, ua li cas koj pom lub wavelength ntawm photon?
Lub zog E, zaus f, thiab wavelength l ua a Photon muaj feem xyuam raws li hauv qab no: E = hf = hc / λ, qhov twg c yog qhov ceev ntawm lub teeb thiab h yog Planck'sconstant. Yog li, muab E lossis f, qhov wavelength λ tau beeasily xam.
Koj yuav daws li cas rau lub zog?
Cov mis rau lub zog of motion is KE =.5 × m × v2 qhov twg KE yog kinetic zog hauv joules, m yog hnyav hauv kilograms thiab v yog tshaj tawm hauv meters persecond.
Pom zoo:
Yuav ua li cas koj pom wavelength nyob rau hauv nanometers?
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