Ma'anar raƙuman ruwa masu ratsawa
Raƙuman ruwa masu wucewa sune raƙuman ruwa waɗanda alkiblar yaduwarsu take daidai da alkiblar girgizar da suke wucewa ta cikinta.
Misalan raƙuman ruwa masu ratsawa
Misalin raƙuman da ke wucewa shine raƙuman da ke kan igiya ko waya. Idan raƙuman da ke kan igiyar suna tafiya daga hagu zuwa dama, igiyar tana motsawa sama da ƙasa, a tsaye zuwa ga alkiblar yaduwar raƙuman.
Sassan raƙuman ruwa masu ratsa jiki
Kibiyar ja da ke dama tana nuna alkiblar motsin raƙuman ruwa. Kibiyoyin ja da ke sama da ƙasa suna nuna alkiblar motsin kowanne sashe na igiyar.
A (girma) = matsakaicin karkacewar kirtani
Lambda (tsawon raƙuman ruwa) = nisa tsakanin kololuwa biyu a jere = nisa tsakanin ramuka biyu a jere = nisa tsakanin maki biyu a jere masu tsawon tsayi iri ɗaya. Ma'anar ita ce tsawon raƙuman ruwa ɗaya yana da kusurwa ɗaya da kuma rami ɗaya.
a – b = tudun raƙuman ruwa
b – c = kwarin raƙuman ruwa
Mitar raƙuman ruwa (f) ita ce adadin raƙuman ruwa da ke wucewa daidai wannan ma'auni a cikin daƙiƙa ɗaya. Idan, lokacin da raƙuman ruwa ke tafiya a kan igiya, akwai raƙuman ruwa guda biyu (ƙafafu biyu da maɓuɓɓugan ruwa guda biyu) waɗanda suka wuce daidai wannan ma'auni, misali ma'auni b, to mitar raƙuman ruwa shine 2/daƙiƙa ko 2 hertz.
Lokaci (T) shine tazara ta lokacin da ake buƙata don tsawon rai ɗaya ya wuce wuri ɗaya. Idan lokacin da raƙuman ruwa suka yaɗu a kan igiya, akwai tsawon rai ɗaya (ƙarfe ɗaya da kuma tafki ɗaya) da ke wucewa wuri ɗaya, misali aya ta b, a cikin daƙiƙa ɗaya to lokacin raƙuman ruwa shine daƙiƙa 1.
Gudun raƙuman ruwa (v) = mita x tsawon tsayi = tsawon tsayi / lokaci
Misalin matsalolin
Igiya tana da tsawon mita 4. Idan aka motsa ƙarshen igiyar sama da ƙasa da santimita 30, raƙuman ruwa masu ratsawa za su taso waɗanda ke yaɗuwa tare da igiyar a gudun mita 1/s. Idan akwai tuddai biyu da magudanan ruwa guda biyu a kan igiyar, a tantance: (a) tsawon tsayi (b) mita (c) lokaci (d) girma
Tattaunawa
(a) Tsawon Raƙuman Ruwa
Tsawon igiyar mita 4 ne kuma a gefen igiyar akwai raƙuman ruwa guda biyu (tudu biyu da kwari biyu) don haka tsawon igiyar daya = mita 2.
(b) Yawan (f)
(c) Lokaci (T)
T = 1/f = 1/0,5 = daƙiƙa 2
(d) Girma (A)
Matsakaicin girma ko karkacewa = 30 cm = mita 0,3.
