
1c-od centripetalne do rada
Authored by Anita Zorčić
Physics
9th Grade
Used 2+ times

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6 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Kablić s vodom privezan je na uže duljine 50 cm. Kojom najmanjom brzinom moramo vrtjeti kablić po krugu u vertikalnoj ravnini da nam voda iz kablića ne isteče?
v=2,20m/s
v=2,24m/s
v=2,21m/s
v=2,23m/s
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Kolika je frekvencija tijela koje u 2 sekunde napravi 8 okretaja?
f=4Hz
f=0,25 Hz
f=8Hz
f=2Hz
3.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
Kugla mase 8 kg obješena je na kraju niti. Nađi akceleraciju kojom se giba kugla ako je napetost niti 80 N?
(samo upiši iznos akceleracije)
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Kolika je gustoća tijela uronjenog u vodu tako da je 3/4 volumena tijela ispod površine vode ?Za gustoću vode uzeti 1000kg/m3
250kg/m3
500kg/m3
1000kg/m3
750kg/m3
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Dizalo s putnicima ima masu 800 kg. Odredi u kojem se smjeru giba dizalo i kolikom akceleracijom ako je napetost užeta 12000 N?
0,5 m / s2 , prema gore
2,5 m/ s2 , prema dolje
5 m/ s2 , prema dolje
5 m/ s2 , prema gore
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Na kojoj dubini je ukupan tlak 4 puta veći od atmosferskog tlaka ? Za gustoću vode uzeti 1000 kg /m3 , a za atmosferski tlak 101 325 Pa?
40,39m
30,39m
20,39m
10,39m
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