Musoro: Kunzwisisa Manyuko Enzwi: Mibvunzo Yemuenzaniso uye Kukurukurirana
Pendauluan
Ruzha ifungu remagetsi rinopararira kuburikidza nechinhu chakadai semhepo, mvura, kana zvinhu zvakasimba. Chiitiko ichi chakakosha muhupenyu hwezuva nezuva, kubva pakutaurirana kwevanhu uye kunakidzwa nemimhanzi kusvika kumashandisirwo etekinoroji senge sonar ne ultrasound. Muchinyorwa chino, tichaongorora pfungwa dzakasiyana-siyana dzine chekuita nemazwi kuburikidza nematambudziko emuenzaniso anotibatsira kunzwisisa.
Pfungwa Yekutanga Yemashoko Anobva Munzwi
Tisati tapinda mumatambudziko emuenzaniso, ngationgororei muchidimbu pfungwa huru yemazwi anowanikwa. Ruzha runogadzirwa nekudedera kwechinhu, uye pane zvinhu zvakakosha zvakakosha kunzwisisa:
1. Kuwanda kwenzwi: Huwandu hwekudengenyeka kunoburitswa neruzha pasekondi, hunoyerwa muHertz (Hz). Kuwanda kwenzwi kunosarudza kukwirira kwenzwi.
2. Kukura kwenzwi: Hukuru hwekudedera kwenzwi kubva kune ruzha. Kukura kwenzwi kwakabatana zvakananga nekunzwika kana kupfava kwenzwi.
3. Kumhanya kweruzha: Kumhanya kweruzha kunosiyana zvichienderana nechinhu chiri kutaurwa. Semuenzaniso, ruzha runofamba nekukurumidza mumvura kupfuura mumhepo.
4. Kureba kwefungu reruzha: Chinhambwe chiri pakati pemisoro miviri yakatevedzana yefungu reruzha.
Muenzaniso weMibvunzo yeMashoko Eruzha
Ngatikurukurei mimwe mienzaniso yemibvunzo kuti tinzwisise zviri nani pfungwa yemanyuko eruzha.
Mubvunzo 1: Manyuko eRuzha uye Kuwanda Kwarwo
Forogo yekuchinjana inoburitsa ruzha rune frequency ye440 Hz. Kana kumhanya kweruzha mumhepo kuri 340 m/s, hupamhi hweruzha rwunoburitswa neforogo yekuchinjana chii?
Kukurukurirana:
Hurefu hwemafungu hunogona kuverengerwa uchishandisa fomura:
\[ \lambda = \frac{v}{f} \]
Apo \( \lambda \) iri wavelength, \( v \) iri kumhanya kweruzha, uye \( f \) iri frequency.
Isa tsika dzatiinadzo:
\[ \lambda = \frac{340 \, \text{m/s}}{440 \, \text{Hz}} = 0.7727 \, \text{m} \]
Saka, kureba kweruzha rwunoburitswa i0.7727 metres.
Mubvunzo 2: Kukura kweRuzha uye Kusimba Kwaro
Manzwi maviri akafanana anogadzira mafungu maviri ane amplitude yezvikamu zviviri chimwe nechimwe. Kana mafungu maviri aya akabatanidzwa, ndeapi amplitude yepamusoro inogona kugadzirwa?
Kukurukurirana:
Kana mafungu maviri ane amplitude yakafanana uye phase imwe chete akabatanidzwa, amplitude yepamusoro inobuda ndiyo huwandu hweamplitude dzavo. Saka:
Hurefu hwepamusoro = 2 + 2 = mayuniti mana.
Mubvunzo 3: Doppler Effect
Amburenzi inofamba ne30 m/s ichienda kune munhu anofamba netsoka akamira. Kana frequency yesairini yayo iri 700 Hz uye kumhanya kweruzha mumhepo kuri 340 m/s, munhu anofamba netsoka anonzwa frequency yakadii?
Kukurukurirana:
Shandisa fomura yeDoppler effect kune sosi inosvika kumuteereri:
\[ f' = f \left( \frac{v + v_o}{v – v_s} \right) \]
Pano, \( f' \) ndiyo frequency inoonekwa, \( v \) ndiyo kumhanya kweruzha mumhepo, \( v_o \) ndiyo kumhanya kwemuteereri (0 m/s nekuti munhu anofamba netsoka akamira), uye \( v_s \) ndiyo kumhanya kwenzvimbo (amburenzi).
\[ f' = 700 \, \text{Hz} \left( \frac{340 \, \text{m/s} + 0 \, \text{m/s}}{340 \, \text{m/s} – 30 \, \text{m/s}} \right) \]
\[ f' = 700 \, \text{Hz} \left( \frac{340}{310} \right) \]
\[ f' = 768.39 \, \text{Hz} \]
Saka, frequency inonzwiwa nemunhu anofamba netsoka inenge 768.39 Hz.
Mubvunzo 4: Kuwirirana
Chubhu yakavhurika ine resonance ine urefu hwemamita 0.85. Kana kumhanya kweruzha mumhepo kuri 340 m/s, chii chinonzi core frequency yeresonance iyi?
Kukurukurirana:
Kune chubhu yakavhurika, frequency huru inogona kuverengerwa uchishandisa fomura:
\[ f = \frac{v}{2L} \]
Apo \( L \) kureba kwechubhu.
\[ f = \frac{340 \, \text{m/s}}{2 \times 0.85 \, \text{m}} \]
\[ f = 200 \, \mavara{Hz} \]
Saka, frequency huru ye resonance tube ndeye 200 Hz.
Mhedziso
Kunzwisisa manyuko eruzha uye zviitiko zvine chekuita nazvo zvakaita sehuwandu, amplitude, velocity, uye Doppler effect kwakakosha mufizikisi yeruzha. Mienzaniso yemibvunzo iri pamusoro inoratidza kuti pfungwa idzi dzinoshandiswa sei mumamiriro akasiyana-siyana. Nekudzidza nekudzidzira matambudziko aya, tinogona kuwedzera kunzwisisa kwedu kuti ruzha runoshanda sei makatipoteredza. Ramba uchidzidzira uye uchiongorora zvinhu zvakasiyana-siyana kuti usimbise ruzivo rwako rweruzha.
