1. Kumhanya kwewave inochinjika patambo yemamita makumi maviri nemashanu i50 m/s. Simba rekumanikidzwa kwetambo i200 N. Tsvaga huremu hwetambo.
A. 0.08 kg
B. 0.5 kg
C. 0.8 kg
D. 2.0 kg
Zvinozivikanwa:
Kureba kwetambo (l) = 25 m
Kumhanya kwewave inochinjika (v) = 50 m/s
Simba rekumanikidzwa kwetambo (T) = 200 N
Zvinodiwa: Huremu hwetambo (m)
Solution:
Dambudziko iri rinogona kugadziriswa uchishandisa fomura yenzira yekuparadzira mafungu patambo.
Mhinduro chaiyo ndiD.
2. Pamusoro pedziva panoyangarara zvidimbu zviviri zvehuni, daro riri pakati pazvo i6 m. Mafungu anopararira pamusoro pedziva. Kana huni yekutanga yafamba ichikwira nekudzika katatu, huni yechipiri inongofamba ichikwira nekudzika kamwe chete. Kana masekondi maviri ega ega marudzi ese ehuni achifamba achikwira nekudzika katatu, kupararira kwemafungu kuno ...
A. 4.5 m/s
B. 3.0 m/s
C. 2.0 m/s
D. 1.5 m/s
Zvinozivikanwa:
Kureba pakati pemiti yese (l) = mamita matanhatu
Matanda ekutanga akafamba achikwira nekudzika katatu; echipiri akafamba achikwira nekudzika kamwe chete.
Kuwanda (f) = 3 / 2 = 1.5 hertz
Zvinodiwa: Kumhanya kwemafungu (v)
Solution:
Kana huni yekutanga ichifamba kumusoro nekudzika kamwe chete, kureba kwehurefu 1 kunofamba kuenda kuhuni yechipiri. Kana huni yekutanga ichifamba kumusoro nekudzika kaviri, kureba kwehurefu 2 kunofamba kuenda kuhuni yechipiri. Kana huni yekutanga ichifamba kumusoro nekudzika katatu, kureba kwehurefu kwasvika panzvimbo yechipiri yehuni, zvekuti panguva imwe chete huni yechipiri inokwira nekudzika kamwe chete.
Nokudaro, the mufambo Pakati pehuni yekutanga nehuni yechipiri pane marefu maviri ewavelength (2 λ), sezvakaratidzwa mumufananidzo uri padivi.
Kureba kwehurefu hwewavelength imwe (λ) = 6 / 2 = mamita matatu
Kumhanya kwekupararira kwemafungu (v):
v = f λ = (1.5 hertz) (mamita matatu)
v = 4.5 m/s
Mhinduro chaiyo ndeinoti A.
3. Zvinhu zvinokurumidzisa kupararira kwemafungu patambo ndeizvi…
(1) tambanudza waya
(2) kukudza tambo
(3) kuwedzera kusimba kwewaya
(4) kuwedzera saizi yewaya. Chirevo chakarurama ndechekuti…
A. (1), (2), (3) uye (4)
B. (1), (2), uye (3)
C. (3) na (4)
D. (3) chete
Solution:
Fomura yekumhanya kwekupararira kwemafungu patambo:
Mhinduro chaiyo ndeinoti A.
v = kumhanya kwekupararira kwemafungu patambo
T = simba rekumanikidzwa kwetambo
μ = kuwanda kwetambo
m = huremu hwetambo
l = kureba kwetambo
4. Tambo inoburitsa tambo yewavelength ine frequency ye50 Hz uye wavelength ye2 m. Nguva uye kumhanya kwemafungu…
A. Masekondi 0.02 uye 50 ms -1
B. 0.02 masekondi uye 100 ms -1
C. 0.04 masekondi uye 50 ms -1
D. Masekondi 0.5 uye 100 ms -1
Zvinozivikanwa:
Kakawanda (f) = 50 Hz
Hurefu hwemafungu (λ) = mamita maviri
Zvinodiwa: Nguva (T) uye kumhanya kwemafungu (v)
Solution:
Nguva:
T = 1/f = 1/50 Hz = 0.02 masekondi
Kumhanya kwemafungu:
v = f λ = (50 1/sekondi)(2 mamita) = 100 mamita/sekondi
Mhinduro chaiyo ndeiyi B.
5. Chivharo chiri pamusoro pemvura chinokwira nekudzika nekuda kwemafungu emvura ari pamusoro. Nguva inodiwa kubva pamucheto kusvika pamucheto unotevera imasekondi 1.2. Kana chiri pamusoro pemvura, daro riri pakati pemafungu maviri i10 cm, saka tarisa kumhanya kwekupararira kwemafungu.
A. 12 ms -1
B. 12 cm s -1
C. 8,3 ms -1
D. 8,3 cm s -1
Zvinozivikanwa:
Nguva inodiwa kubva pamucheto kusvika pamucheto unotevera = nguva yenguva yehurefu hwewavelength imwe = nguva (T) = 1.2 seconds.
Kureba pakati pemakrists maviri = kureba kwehurefu hwewavelength imwe (λ) = 10 cm
Zvinodiwa: Kumhanya kwekupararira kwemafungu (v)
Solution:
Kumhanya kwekupararira kwemafungu:
v = f λ = λ / T = 10 cm / 1.2 masekondi = 8.3 cm/sekondi = 8.3 cm.s -1
Mhinduro chaiyo ndiD.
