Kuwirirana kwemafungu eruzha - matambudziko nemhinduro

1. Mushure mekunge forogo yekuisa A yazunguzwa, forogo yekuisa B inozunguzwa. Forogo yekuisa B inozunguzwa nekuti…..

A. Forogo yekuisa A ine amplitude yakafanana neforogo yekuisa B

B. Maforogo ese ari maviri anoshandisa bhokisi remanzwi rimwe chete

C. Forogo yekuisa B ine huwandu hwakafanana neforogo yekuisa A

D. Kurira kwemanzwi anokonzerwa nemaforogo ese ari maviri akafanana

mhinduro

Mushure mekuzunguzika, forogo yekuisa tuning A inozunguzika mhepo yakapoteredza, saka mhepo inozunguzikawo nefrequency imwe chete . Uyezve, mhepo inozunguzika forogo yekuisa tuning B. Forogo yekuisa tuning B iri kuzunguzikawo nefrequency yechisikigo, asi amplitude yevibration iri shoma, uye vibration haionekwe. Sezvo frequency yechisikigo ye tuning forogo B yakaenzana nefrequency yevibration yemhepo,

uye frequency ye tuning fork A, ipapo molecule yemhepo inowedzera amplitude ye tuning fork B. Tuning fork B inoita seinodedera nekuti amplitude yayo yekudedera inoonekwa.

Mhinduro chaiyo ndeinoti C.

2. Chubhu yeresonance inoburitsa ruzha rukuru kekutanga kana kureba kwembiru yemhepo kuri 17 cm uye ruzha rukuru kechipiri kana kureba kwembiru yemhepo kuri 51 cm. Frequency ye tuning fork inoshandiswa i500 Hz. Sarudza kumhanya kwemhepo iri muchubhu.

A. 138 m/s

B. 230 m/s

C. 340 m/s

D. 461 m/s

Solution:

Chimiro chechubhu yeresonance ndechekuti mugumo mumwe wakavhurika, uye mumwe mugumo wakavharwa, saka daro riri pakati pechubhu neanti-node = hurefu hushoma hwechubhu = ¼ λ = λ / 4.

Equation yehurefu hwechubhu:

Daro riri pakati penodhi nerinopesana nenodhi yechubhu yeresonance rine mugumo mumwe rakavhurika, uye rimwe mugumo rinovharwa, rinozadzikiswa kana n iri nhamba isina kujairika.

Mhinduro chaiyo ndiC.

3. Kurira kwekutanga muchubhu yekurasira kunoitika kana kureba kwembiru yemhepo kuri 20 cm. Kurira kwechipiri nekurasira kwechitatu zvinoitika kana kureba kwembiru yemhepo kuri…

A. 40 cm uye 60 cm

B. 30 cm uye 40 cm

C. 60 cm uye 100 cm

D. 100 cm uye 200 cm

Zvinozivikanwa:

Kureba kwembiru yemhepo kana n ₁ = 1 (L ₁ ) = 0.2 m

Zvinodiwa: Kureba kwekoramu yemhepo kana n ₂ = 3 uye n ₃ = 5

Solution:

Equation yehurefu hwechubhu (equation yehurefu hwekoramu yemhepo):

Shandisa equation iyi kuverenga wavelength uchishandisa data riri pamusoro apa:

Kureba kwekoramu yemhepo kana n ₂ = 3 :

Mhinduro chaiyo ndeinoti C.