Na kocku brida 2cm uronjenu u tekućinu djeluje uzgon od 3mN. Koliki uzgon djeluje na kocku brida 4cm uronjenu u istu tekućinu?

1a-od centripetalne sile do rada

Quiz
•
Physics
•
9th Grade
•
Hard
Anita Zorčić
Used 1+ times
FREE Resource
6 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
6mN
20mN
24mN
18mN
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Koliko je puta ukupan tlak u vodi gustoće 1000 kg /m3 veći na dubini od 30m od atmosferskog tlaka ?
3puta
6puta
4puta
8puta
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Koliki je period vrtnje tijela koje za vrijeme od 4 sekunde napravi 8 okretaja?
2 s
4 s
1s
0,5 s
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Koliki mora biti faktor trenja između kotača automobila i ceste da bi automobil bez zanošenja prošao zavoj polumjera 100 m , brzinom od 72 km/h? g=10 m/s2
0,2
0,3
0,4
0,5
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Kolika sila stvara tlak od 20000 Pa na površinu od 4cm2?
2N
4N
6N
8N
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Tijelo mase 10 kg ovješeno je na kraju niti. Nađi akceleraciju tijela i u kojem smjeru se tilo giba ako je napetost niti 60 N (g = 10 m/s2).
akceleracijom od 2m/s2 prema gore
akceleracijom od 4m/s2 prema gore
akceleracijom od 2m/s2 prema dolje
akceleracijom od 4m/s2 prema dolje
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