Amagagasi ajikelezayo nawasesikhathini eside - izinkinga nezixazululo

Amagagasi ajikelezayo nawasesikhathini eside - izinkinga nezixazululo

1. Igagasi lihamba ngentambo engamamitha amathathu ubude imizuzwana engu-0.3. Iyini isikhathi segagasi?

Kwaziwa:

Isikhawu sesikhathi (t) = imizuzwana eyi-0.3

Okufunwayo: Isikhathi (T)

Isixazululo:

Ubude obungu -1 = i-crest engu-1 + umkhumbi ongu-1

Isikhathi = 2 x 0.1 imizuzwana = 0.2 imizuzwana

2. Isivinini samagagasi ngokusho komfanekiso ongezansi…

Kwaziwa:

Ububanzi obu-1 bomphetho bune-crest eyodwa kanye nomgodi owodwa. Ngokusho komfanekiso ongenhla, ubude obu-1 bomphetho = amamitha ama-2 x 4 = amamitha ayi-8.

Isikhathi segagasi (T) = 0.5 x 4 = imizuzwana emi-2

Okufunwayo: Isivinini segagasi (v)

Isixazululo:

Isivinini segagasi:

v = s / t = λ / T = amamitha angu-8 / imizuzwana emi-2 = amamitha angu-4/umzuzwana

3. Ibanga eliphakathi kwamaphuzu u-A no-B lingu-30 cm. Liyini ijubane lamagagasi ngokusho komfanekiso ongezansi.

Kwaziwa:

Kusukela ku-A kuya ku-B, kukhona ubude be-¾. Uma ibanga eliphakathi kuka-A no-B lingu-30 cm, khona-ke ibanga le-¼ ubude be-wavelength lingu-30 cm / 3 = 10 cm. Ngakho-ke, ubude be-wavelength obu-1 = 4 x 10 cm = 40 cm.

Ngokusho kwesibalo esingenhla, isikhathi segagasi singamasekhondi angu-4.

Okufunwayo: Isivinini segagasi (v)

Isixazululo:

v = d / t = λ / t

v = isivinini segagasi, d = ibanga, λ = ubude besikhathi, t = isikhawu sesikhathi

Isivinini segagasi:

v = λ / t = 40 cm / 4 imizuzwana = 10 cm / 1 isekhondi = 10 cm/isekhondi

4. Uma ibanga lika-A no-B = 250 cm, khona-ke isivinini samagagasi…

Kwaziwa:

Ibanga lika-A no-B = ubude be-wavelength obungu-5/4 = 250 cm.

1/4 ubude besikhathi = 250 cm / 5 = 50 cm

Ubude obu-1 = ubude obungu-4/4 = 4 x 50 cm = 200 cm

Inkathi (T) = imizuzwana emi-2

Okufunwayo: Isivinini Samagagasi

Isixazululo:

Ifomula yesivinini segagasi:

v = d / t = λ / t

v = isivinini segagasi, d = ibanga λ = ubude besikhathi, t = isikhawu sesikhathi

Isivinini segagasi:

v = 200 cm / 2 imizuzwana = 100 cm/isekhondi

5. Ubukhulu bamagagasi buboniswa yi….

Isixazululo:

Ubukhulu begagasi bungu-BB' no-DD”.

1. Yini ehlukanisa igagasi eliphambene negagasi elide ngokwendlela izinhlayiya ezihamba ngayo?
   • Impendulo: Kugagasi eliphambeneyo, izinhlayiya ze-medium zihamba ziqonde ngqo ohlangothini lokusabalala kwamagagasi. Kugagasi elide, izinhlayiya zihamba zihambisana nohlangothi lokusabalala kwamagagasi.
2. Inikeza isibonelo esivamile segagasi eliphambeneyo kanye negagasi elide.
   • ImpenduloIsibonelo esivamile segagasi eliphambeneyo igagasi elisentanjeni noma amagagasi amanzi. Isibonelo esivamile segagasi elide igagasi lomsindo emoyeni.
3. Ingabe izinto eziqinile zingasekela amagagasi anqamulayo kanye namagagasi ajikelezayo?
   • Impendulo: Yebo, izinto eziqinile zingasekela amaza adlulayo kanye namaza aqondile. Kodwa-ke, uketshezi (amagesi kanye noketshezi) ngokuvamile kusekela amaza aqondile kuphela.
4. Ukucindezelwa kanye nokungatholakali kahle kuhlobene kanjani namagagasi ajikelezayo?
   • Impendulo: Kumagagasi ajikelezayo, ukucindezela kubhekisela esifundeni lapho izinhlayiya ze-medium zisondelene khona, kanti i-rarefaction ibhekisela esifundeni lapho izinhlayiya ziqhelelene kakhulu. Lezi zifunda zihambisana nama-crests nama-trough kumagagasi aphambeneyo.
5. Kungani singezwa umsindo (igagasi elide) emakhoneni kodwa singakuboni ukukhanya (okusebenza njengegagasi eliphambeneyo) ngendlela efanayo?
   • Impendulo: Umsindo ungaphambukisa, noma usakazeke, eduze kwezithiyo ngokuphawulekayo kunokukhanya ngenxa yobude bawo obude uma kuqhathaniswa nokukhanya okubonakalayo. Nakuba kokubili umsindo nokukhanya kubonisa ukuphambukisa, ubude obufushane bamaza okukhanya okubonakalayo busho ukuthi imiphumela yawo yokuphambukisa ayibonakali kakhulu ezimweni zansuku zonke.
6. Ijubane lamagagasi adlulayo nalawo aqondile endaweni efanayo liqhathaniswa kanjani?
   • Impendulo: Ijubane lamagagasi ajikelezayo nawase-longitudinal endaweni efanayo lingahluka. Isibonelo, ezintweni eziqinile, ijubane le-longitudinal (i-P-wave) livame ukushesha kunele-transverse (i-S-wave).
7. Ingabe i-medium ingabonisa kokubili ukunyakaza kwamagagasi okuhambayo kanye nokwe-longitudinal ngesikhathi esisodwa?
   • ImpenduloYebo, ukuphazamiseka okuthile kungadala amagagasi ajikelezayo kanye namagagasi aqondile endaweni ngesikhathi esisodwa. Isibonelo, ukuzamazama komhlaba kukhiqiza amagagasi e-P (longitudinal) kanye namagagasi e-S (aphambene) ahamba eMhlabeni.
8. Yiluphi uhlobo lwegagasi olungaba nomthelela omkhulu ekusakazekeni?
   • Impendulo: Amagagasi ajikelezayo angahlukaniswa nge-polarization. I-polarization ihilela ukuvinjelwa kokudlidliza endaweni eyodwa. Amagagasi amade, ngenxa yokunyakaza kwawo emuva naphambili, awakwazi ukuhlanganiswa ngale ndlela.
9. Uhlobo luni lwegagasi eliyigagasi likagesi, njengokukhanya noma amagagasi omsakazo?
   • Impendulo: Amagagasi kagesi angamagagasi ajikelezayo. Amasimu awo kagesi namagnetic ajikeleza ngendlela eqondile eya lapho kusabalala khona amagagasi.
10. Kungani ama-S-wave (uhlobo lwegagasi elihambayo) engabonwa ehamba ngaphakathi kwengaphakathi loMhlaba ngesikhathi sokuzamazama komhlaba?

• ImpenduloAma-S-wave awahambi enkabeni engaphandle yoMhlaba ngoba kukholakala ukuthi ayiketshezi. Ama-transverse wave adinga indawo engasekela ukucindezeleka kwe-shear, okuyinto eqinile engayenza, kodwa uketshezi (uketshezi namagesi) alukwazi.