Fomura yeWave Yakachinjika Yemafungu Marefu Mafungu Asingachinji

Mienzaniso yemibvunzo nemafomura emafungu anochinjika, mafungu enguva refu, mafungu asingachinjiki

Mafungu anotenderera

1. Chinhambwe chiri pakati pemapombi maviri ari pedyo emvura yemafungu i20 m. Chinhu chinoyangarara pamusoro pemvura uye chinonzwa kufamba kwemhepo. Kana nguva yekudedera kamwe chete iri masekondi mana, saka kumhanya kwemafungu nde…. m/s

1. 20
2. 15
3. 10
4. 5

Kukurukurirana
Zvinozivikanwa kuti:
Kureba kwemafungu (λ) = mamita makumi maviri
Nguva (T) = masekondi mana
Akabvunzwa: Kumhanya kwemafungu (v)
Mhinduro:
Fomura yekumhanya kwemafungu:
v = λ / T = mamita makumi maviri / masekonzi mana = mamita mashanu / sekondi
Mhinduro chaiyo ndiD.

2. Mapoinzi maviri A naB ari patambo uye ari kure nemasendimita 90 kubva kune mumwe nemumwe. Patambo, mafungu akachinjika, saka poindi A iri panhongonya yemafungu, poindi B iri pasi pemafungu, uye pakati pezviviri pane misoro miviri nepasi mbiri dzemafungu. Kana nguva yemafungu iri 0,3 seconds, saka kumhanya kwekuparadzira mafungu Zviri….

1. 10,8 cm / s
2. 18,0 cm / s
3. 120,0 cm / s
4. 200,0 cm / s

Kukurukurirana
Zvinozivikanwa kuti:
Kureba AB (l) = 90 cm
Nguva yemafungu (T) = masekondi 0,3
Kuwanda kwemafungu (f) = 1/0,3 masekondi
Poindi A iri pamusoro pemafungu, poindi B iri pasi pemafungu
Pakati pemapoinzi A neB pane misoro miviri uye pasi mbiri pemafungu
Akabvunzwa: Kumhanya kwekupararira kwemafungu (v = f λ)
Mhinduro:
Zvichibva pamufananidzo, zvakagumiswa kuti kune mawavelengths maviri nehafu. Kureba kwewavelength imwe (λ) = 90 cm / 2,5 = 36 cm

Kumhanya kwekuparadzira mafungu:
v = f λ = (1/0,3)(36) = 36/0,3 = 120 cm/s.
Mhinduro chaiyo ndiC.

3. Girafu rinotevera rinoratidza kuchinjika kwenzvimbo iri pakati pechinhu zvichienderana nenguva iyo mafungu achipfuura nepakati pechinhu.
Kana kureba kwemafungu kuri mamita matanhatu, saka kumhanya kwekuparadzira mafungu ndiko...

1. 3 m / s
2. 6 m / s
3. 8 m / s
4. 12 m / s

Kukurukurirana
Zvinozivikanwa kuti:
Kune mawavelength maviri zvichibva pagirafu iri pamusoro.
Kureba kwehurefu hwemafungu (λ) = mamita matanhatu / 2 = mamita matatu.
Nguva (T) = masekondi 0,5
Akabvunzwa: Kumhanya kwemafungu (v)
Mhinduro:
v = f λ = λ / T = mamita matatu / masekonzi 0,5 = mamita matanhatu / sekondi
Mhinduro chaiyo ndeiyi B.

Mafungu erefu

4. Manzwi maviri anoridzwa panguva imwe chete muchimiro chepakati netembiricha imwechete. Izwi rekutanga rine frequency ye640 Hz uye izwi rechipiri rine 1280 Hz. Chirevo chakarurama ndeche….

1. Kumhanya kweruzha rwekutanga kwakakura kupfuura kumhanya kweruzha rwechipiri
2. Kumhanya kweruzha rwekutanga kudiki pane kumhanya kweruzha rwechipiri
3. Kumhanya kwekutanga nekwechipiri kweruzha kwakafanana
4. Kureba mafungu eruzha ese ari maviri akaenzana saizi

Kukurukurirana
Kumhanya kweruzha kunoenderana nepakati, saka kana pakati pacho pakafanana, kumhanya kwemanzwi ese ari maviri kuchafanana. Kusiyana neizvi, kana frequency yakakwira, wavelength ichave diki, uye saizvozvo, kana frequency iri shoma, wavelength ichave yakakura. Mafrequency emanzwi maviri akasiyana, saka wavelength yemanzwi maviri achasiyanawo.
Mhinduro chaiyo ndiC.

Mafungu asingachinji (mafungu akamira)

5. Tambo ine mativi ese maviri yakasungirirwa inogadzira toni yekutanga ine frequency ye420 Hz. Mafrequency eovertones matatu ndeaya….

1. 840 Hz
2. 1260 Hz
3. 1680 Hz
4. 2940 Hz

Kukurukurirana
Zvinozivikanwa kuti:
Kuwanda kwehuwandu (f)₁) = 420 Hz
Magumo ese ari maviri ewaya akasungwa
Akabvunzwa: Kuwanda kwemanzwi matatu akawandisa
Mhinduro:
Kuwanda kwezwi rechipiri (f)₂) = 2 f₁ = 2 (420 Hz) = 840 Hz
Kuwanda kwezwi rechitatu (f)₃) = 3 f₁ = 3 (420 Hz) = 1260 Hz
Mhinduro chaiyo ndeiyi B.

Mafungu eruzha

6. Mufananidzo uri pazasi unoratidza bhero remagetsi riri mukati menzvimbo yakavharwa. Bhero rinozoridzwa, richiburitsa mweya kubva munzvimbo yacho. Mushure mekunge mweya waburitswa kubva munzvimbo yacho, ruzha rwebhero haruchanzwikwi. Zvichibva pachiitiko ichi, zvinogona kugumiswa kuti ruzha...

1. hazviitiki munzvimbo yakavharwa
2. kutakurwa nemhepo ichibuda muhood
3. haigone kupararira mumhepo isina chinhu
4. haigone kupararira kuburikidza nezvinhu zvakasimba

Kukurukurirana
Ruzha ifungu rinofamba nepakati pezvinhu zvakasimba, mvura, uye magasi. Kana bhero riri mumhepo isina chinhu, mafungu eruzha haakwanise kufamba kubva pabhero kuenda munzeve yemuteereri.
Mhinduro chaiyo ndiC.

Kwakabva mubvunzo:

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