Muenzaniso wemafungu asingachinji uye mafungu akamira

4 Mienzaniso yemafungu asingachinji uye mafungu akamira

1. Tambo yakareba mamita 0,6. Kana simba retambo rikagadziriswa zvekuti kumhanya kwemafungu kuri 120 m/s, zvinoreva kuti frequency huru...
A. 100 Hz
B. 120 Hz
C. 140 Hz
D. 150 Hz
E. 350 Hz
Kukurukurirana:

Zvinozivikanwa :
Kureba kwewaya (L) = 0,6 metres
Kumhanya kwemafungu (v) = 120 m/s.
Akabvunzwa :
Kuwanda kwehuwandu (f)₁)?
Jawab :
Fomura yehuwandu hwema frequency (f)₁) mafungu asingachinji kana mafungu akamira apo magumo ese etambo akabatanidzwa:
f₁ = v / 2L
Kuwanda kwehuwandu (f)₁) mafungu ndeaya:
f₁ = 120 / (2)(0,6) = 120 / 1,2 = 100 hz
Mhinduro chaiyo ndiA.

2. Nekuda kwekufungisisa, mafambiro asingachinji anoumbwa ne equation: y = 0,4 sin (0,6 π x) cos π(8t) metres. Kubva pa equation iri pamusoro, kumhanya kwemafungu akaratidzwa ndiko...
A. 10,0 m/s
B. 11,5 m/s
C. 12,4 m/s
D. 13,2 m/s
E. 14,0 m/s
Kukurukurirana:
Zvinozivikanwa :
Akabvunzwa :
Kumhanya kwemafungu kwakaratidzwa (v) ?
Jawab :

Mhinduro chaiyo ndiD.

3. Tambo yakareba mamita matatu yakasungirirwa kune rimwe divi uye rimwe divi rakabatana nevibrator. Kana vibrator yadengenyeka, wave isingachinji inoumbwa patambo sezvakaratidzwa mumufananidzo:

Nzvimbo yedumbu rechishanu kubva kumucheto wakasungwa ndeye…

A. 0,9 m

B. 1,2 m

C. 2,5 m

D. 2,7 m

E. 3,0 m

Kukurukurirana

Mugumo wetambo yakabatana ne vibrator unogona kufamba zvakasununguka ukuwo mugumo wetambo yakabatana nedanda wakasungirirwa.

Kureba pakati pema "nodes" maviri ari pedyo = mamita matatu / 5 = mamita matatu neshanu.

Nzvimbo yepfundo rekutanga kubva kumagumo akasungwa = 3/5 metres

Nzvimbo yepfundo rechipiri kubva kumagumo akasungwa = 2 (mita 3/5) = mita 6/5

Nzvimbo yepfundo rechipiri kubva kumagumo akasungwa = 3 (mita 3/5) = mita 9/5

Nzvimbo yepfundo rechipiri kubva kumagumo akasungwa = 4 (mita 3/5) = mita 12/5

Daro riri pakati pefundo rimwe nedumbu riri pedyo = 1/2 (mita 3/5) = mita 3/10.

Nzvimbo yedumbu rechishanu kubva kumucheto wakasungwa = daro repfundo rechina kubva kumucheto wakasungwa + Daro riri pakati pepfundo rimwe nedumbu riri pedyo = 12/5 + 3/10 = 24/10 + 3/10 = 27/10 = 2,7 metres.

Mhinduro chaiyo ndiD.

4. Mukuyedza kwaMelde, wave isina kutenderera yakawanikwa sezvakaratidzwa mumufananidzo. Kana kureba kwetambo yakashandiswa kuri 1,5 m, saka nzvimbo yenode yechina yakaverengerwa kubva panobva vibration ndiyo...

A. 0,40 m

B. 0,54 m

C. 0,96 m

D. 1,02 m

E. 1,10 m

Kukurukurirana

Kureba pakati pema "nodes" maviri ari pedyo = mamita matatu / 11 = mamita matatu neshanu.

Nzvimbo yenodhi 1 kubva panzvimbo yekudedera = 1,5/11 metres

Nzvimbo yenodhi yechipiri kubva panzvimbo inodedera = 2 (1,5/11 metres) = 3/11 metres

Nzvimbo yenodhi yechipiri kubva panzvimbo inodedera = 3 (1,5/11 metres) = 4,5/11 metres

Nzvimbo yenodhi rechina kubva panobva vibration = 4 (1,5/11 metres) = 6/11 metres = 0,54 metres

Mhinduro chaiyo ndeiyi B.