Mibvunzo yemuenzaniso weMutemo waBernoulli

Mienzaniso mishanu yeMutemo waBernoulli

1 P1 dhani v1 ndiko kumanikidzwa uye kumhanya kwemhepo iri pamusoro pebapiro, P2 dhani v2 ndiyo kumanikidzwa uye kumhanya kwemhepo iri pasi pebapiro. Kuti ndege ikwire, mamiriro acho ezvinhu...
A. P1 =P2 dhani v1 = v2
B. P1 < P2 dhani v1 > v2
C.P1 < P2 dhani v1 < v2
D.P1 > P2 dhani v1 > v2
E.P1 > P2 dhani v1 < v2
Kukurukurirana:
Zvinozivikanwa kuti:
P1 = Kumanikidzwa kwemhepo pamapapiro
P2 = Kumanikidzwa kwemhepo pasi pemapapiro
v1 = kumhanya kwemhepo pamapapiro
v2 = kumhanya kwemhepo pasi pemapapiro
Akabvunzwa :
Ndeapi mamiriro ezvinhu ekuti ndege isimudzwe kana kuti ndege ifambe mudenga?
Jawab :
Mutemo waBernoulli kana kuti inonzi chaizvo Nheyo yaBernoulli inoti kana kumhanya kwemvura kwakakwira, kumanikidzwa kwemvura kwakaderera, uye zvinopesana, kana kumhanya kwemvura kwakaderera, kumanikidzwa kwemvura kwakakwira. Mvura zvinhu zvinogona kuyerera. Mienzaniso yemvura imhepo nemvura.
Kana kumhanya kwemhepo kwakakwira, kumanikidzwa kwemhepo kwakaderera, zvakasiyana, kana kumhanya kwemhepo kwakaderera, kumanikidzwa kwemhepo kwakakwira.

Kana kumhanya kwemhepo pamusoro pebapiro kwakakura kupfuura kumhanya kwemhepo pasi pebapiro, kumanikidzwa kwemhepo pamusoro pebapiro kwakaderera pane kumanikidzwa kwemhepo pasi pebapiro. Nekuti kumanikidzwa kwemhepo pasi pebapiro kwakakura, kusundidzirwa kwemhepo pasi pebapiro kwakakurawo. Kusiyana neizvi, kusundidzirwa kwemhepo pamusoro pebapiro kwakaderera, saka kusundidzirwa kwemhepo pamusoro pebapiro kwakadererawo (P = F/A - kumanikidzwa kukuru, P, simba guru, F).

Kusundirwa kwemhepo pasi pebapiro kwakakura, kusundirwa kwemhepo pamusoro pebapiro kudiki, saka pane simba rinobuda kana simba rese rinotungamirwa kumusoro. Simba iri rose rinotungamirwa kumusoro izvo zvinoita kuti ndege isimuke..
Jadi mamiriro ezvinhu ekuti ndege ikwire ndiP1 < P2 uye v1 > v2

VERENGA ZVIMWEWO  Mashoko esainzi

Mhinduro chaiyo ndeiyi B.

2.Kukurukurirana kweBvunzo yeNyika yeFizikisi yeZvikoro zveSenior High ya2014 - Mutemo waBernoulli 15a Mumufananidzo, mvura inopombwa necompressor nekumanikidzwa kwe120 kPa ichipinda mupombi yepasi (1) uye inoyerera ichikwira nekumhanya kwe1 m/s.-1 (g = 10 ms-2 uye huwandu hwemvura hunosvika 1000 kg.m-3). Kumanikidzwa kwemvura mupombi yepamusoro (II) kuri….

A. 52,5 kPa
B. 67,5 kPa
C. 80,0 kPa
D. 92,5 kPa
E. 107,5 kPa

Kukurukurirana
Zvinozivikanwa kuti:
Radiyo huru yepombi (r)1) = 12 cm
Dunhu diki repombi (r)2) = 6 cm
Kumanikidzwa kwemvura mumapombi makuru (p)1) = 120 kPa = 120.000 maPascal
Kumhanya kwemvura mumapombi makuru (v)1) = 1 ms-1
Kureba kwepombi hombe (h)1) = 0 m
Kureba kwepombi diki (h)2) = 2 m
Kukurumidza kunokonzerwa negiravhiti (g) = 10 ms-2
Kuwanda kwemvura (ρ) = 1000 kg.m-3
Akabvunzwa: Kumanikidzwa kwemvura mupombi 2 (p)2)
Mhinduro:

Kumhanya kwemvura mupombi 2 kunoverengwa uchishandisa Continuity Equation:
A1 v1 =A2 v2
(π r12)(v)1) = (π r22)(v)2)
(r12)(v)1) = (r22)(v)2)
(122)(1 m/s) = (62)(v)2)
144 = 36 v2
v2 = 144/36
v2 = 4 m/s

Kumanikidzwa kwemvura mupombi 2 kunoverengwa uchishandisa equation yeBernoulli:
Kukurukurirana kweBvunzo yeNyika yeFizikisi yeChikoro cheHigh School ya2014 - Mutemo waBernoulli 15b120.000 + ½ (1000)(12) + (1000)(10)(0) = p2 + ½ (1000)(42) + (1000)(10)(2)
120.000 + ½ (1000)(1) + (1000)(10)(0) = p2 + ½ (1000)(16) + (1000)(10)(2)
120.000 + 500 + 0 = p2 + (500)(16) + 20.000
120.000 + 500 = p2 +8000+20.000
120.500 = p2 + 28.000
p2 = 120.500 - 28.000
p2 = MaPascal 92.500
p2 = 92,5 kPa
Mhinduro chaiyo ndiD.

Kukurukurirana kweBvunzo yeNyika yeFizikisi yeZvikoro zveSenior High ya2014 - Mutemo waBernoulli 15c3. Tarisa mufananidzo unotevera!
Pombi hombe iri pamusoro pevhu mamita mashanu uye pombi diki iri pamusoro pevhu mita imwe. Mwero wemvura inoyerera mupombi hombe iri 36 km/awa.-1 nekumanikidzwa kwe9,1 x 105 Pa, nepo kumanikidzwa kuri mupombi diki kuri 2.105 Pa, saka kumhanya kwemvura mupombi diki ndiko…. (huwandu hwemvura = 103 kg.m-3)

VERENGA ZVIMWEWO  Mafungu

A. 10 ms-1
B. 20 ms-1
C. 30 ms-1
D. 40 ms-1
E. 50 ms-1

Kukurukurirana
Zvinozivikanwa kuti:
Kumanikidzwa kwemvura mumapombi makuru (p)1) = 9,1 x 105 Pascal = 910.000 maPascal
Kumanikidzwa kwemvura mumapombi madiki (p)2) = 2 x 105 Pascal = 200.000 maPascal
Kumhanya kwemvura mumapombi makuru (v)1) = 36 km/h = 36(1000)/(3600) = 36000/3600 =10 m/s
Kureba kwepombi hombe (h)1) = -4 mamita
Kureba kwepombi diki (h)2) = 0 mamita
Kukurumidza kunokonzerwa negiravhiti (g) = 10 ms-2
Kuwanda kwemvura (ρ) = 1000 kg.m-3
Akabvunzwa: Kumhanya kwemvura mupombi diki (v)2)
Mhinduro:
Kumhanya kwemvura mupombi diki (v)2) inoverengwa uchishandisa equation yaBernoulli:
Kukurukurirana kweBvunzo yeNyika yeFizikisi yeZvikoro zveSenior High ya2014 - Mutemo waBernoulli 15d910.000 + ½ (1000)(102) + (1000)(10)(0) = 200.000 + ½ (1000)(v22) + (1000)(10)(-4)
910.000 + 50.000 + 0 = 200.000 + 500 v22 - 40.000
960.000 = 160.000 + 500 v22
800.000 = 500 v22
800.000 / 500 = v22
1600 = v22
v2 = √1600
v2 = 40 m/s
Mhinduro chaiyo ndiD.

4. Kukurukurirana kweBvunzo yeNyika yeFizikisi yeZvikoro zveSenior High ya2014 - Mutemo waBernoulli 15a Mumufananidzo, mvura inopombwa necompressor nekumanikidzwa kwe120 kPa ichipinda mupombi yepasi (1) uye inoyerera ichikwira nekumhanya kwe1 m/s.-1 (g = 10 ms-2 uye huwandu hwemvura hunosvika 1000 kg.m-3). Kumanikidzwa kwemvura mupombi yepamusoro (II) kuri….

A. 52,5 kPa
B. 67,5 kPa
C. 80,0 kPa
D. 92,5 kPa
E. 107,5 kPa

Kukurukurirana
Zvinozivikanwa kuti:
Radiyo huru yepombi (r)1) = 12 cm
Dunhu diki repombi (r)2) = 6 cm
Kumanikidzwa kwemvura mumapombi makuru (p)1) = 120 kPa = 120.000 maPascal
Kumhanya kwemvura mumapombi makuru (v)1) = 1 ms-1
Kureba kwepombi hombe (h)1) = 0 m
Kureba kwepombi diki (h)2) = 2 m
Kukurumidza kunokonzerwa negiravhiti (g) = 10 ms-2
Kuwanda kwemvura (ρ) = 1000 kg.m-3
Akabvunzwa: Kumanikidzwa kwemvura mupombi 2 (p)2)
Mhinduro:

Kumhanya kwemvura mupombi 2 kunoverengwa uchishandisa Continuity Equation:
A1 v1 =A2 v2
(π r12)(v)1) = (π r22)(v)2)
(r12)(v)1) = (r22)(v)2)
(122)(1 m/s) = (62)(v)2)
144 = 36 v2
v2 = 144/36
v2 = 4 m/s

VERENGA ZVIMWEWO  Kutumirwa kweData reDigital: Nheyo, Tekinoroji, uye Mashandisirwo

Kumanikidzwa kwemvura mupombi 2 kunoverengwa uchishandisa equation yeBernoulli:
Kukurukurirana kweBvunzo yeNyika yeFizikisi yeChikoro cheHigh School ya2014 - Mutemo waBernoulli 15b120.000 + ½ (1000)(12) + (1000)(10)(0) = p2 + ½ (1000)(42) + (1000)(10)(2)
120.000 + ½ (1000)(1) + (1000)(10)(0) = p2 + ½ (1000)(16) + (1000)(10)(2)
120.000 + 500 + 0 = p2 + (500)(16) + 20.000
120.000 + 500 = p2 +8000+20.000
120.500 = p2 + 28.000
p2 = 120.500 - 28.000
p2 = MaPascal 92.500
p2 = 92,5 kPa
Mhinduro chaiyo ndiD.

Kukurukurirana kweBvunzo yeNyika yeFizikisi yeZvikoro zveSenior High ya2014 - Mutemo waBernoulli 15c5. Tarisa mufananidzo unotevera! Nzvimbo yepombi hombe iri 5 m pamusoro pevhu uye pombi diki iri 1 m pamusoro pevhu. Kumhanya kwemvura mupombi hombe iri 36 km/awa.-1 nekumanikidzwa kwe9,1 x 105 Pa, nepo kumanikidzwa kuri mupombi diki kuri 2.105 Pa, saka kumhanya kwemvura mupombi diki ndiko…. (huwandu hwemvura = 103 kg.m-3)

A. 10 ms-1
B. 20 ms-1
C. 30 ms-1
D. 40 ms-1
E. 50 ms-1

Kukurukurirana
Zvinozivikanwa kuti:
Kumanikidzwa kwemvura mumapombi makuru (p)1) = 9,1 x 105 Pascal = 910.000 maPascal
Kumanikidzwa kwemvura mumapombi madiki (p)2) = 2 x 105 Pascal = 200.000 maPascal
Kumhanya kwemvura mumapombi makuru (v)1) = 36 km/h = 36(1000)/(3600) = 36000/3600 =10 m/s
Kureba kwepombi hombe (h)1) = -4 mamita
Kureba kwepombi diki (h)2) = 0 mamita
Kukurumidza kunokonzerwa negiravhiti (g) = 10 ms-2
Kuwanda kwemvura (ρ) = 1000 kg.m-3
Akabvunzwa: Kumhanya kwemvura mupombi diki (v)2)
Mhinduro:
Kumhanya kwemvura mupombi diki (v)2) inoverengwa uchishandisa equation yaBernoulli:
Kukurukurirana kweBvunzo yeNyika yeFizikisi yeZvikoro zveSenior High ya2014 - Mutemo waBernoulli 15d910.000 + ½ (1000)(102) + (1000)(10)(0) = 200.000 + ½ (1000)(v22) + (1000)(10)(-4)
910.000 + 50.000 + 0 = 200.000 + 500 v22 - 40.000
960.000 = 160.000 + 500 v22
800.000 = 500 v22
800.000 / 500 = v22
1600 = v22
v2 = √1600
v2 = 40 m/s
Mhinduro chaiyo ndiD.

Kwakabva mubvunzo:

Mibvunzo yeNational Examination Physics yeChikoro Chesekondari/Chikoro Chepamusoro Chebasa

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