
Interacțini prin cîmpuri
Authored by Bivol Maria
Physics
9th Grade
Used 4+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Formă de existență a materiei prin intermediul cărea se transmite interacțiunea:
Câmp magnetic
Câmp electric
Câmp gravitațional
Câmp electromagnetic
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Care este formula pentru intensitatea câmpului electric?
E =
E =
E =
E =
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Legea atracției sarcinilor punctiforme a fost formulată de către savantul
Newton
Coulomb
Tesla
Lorentz
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Care este formula pentru intensitatea câmpului gravitațional?
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O serie de planete foarte mici care se mișcă pe diferite orbite,formând un brîu se numește:
Asteroizi
Meteorizi
Comete
Neptun
6.
MULTIPLE SELECT QUESTION
5 mins • 1 pt
Determinați forța de interacțiune dintre două corpuri punctiforme electrizate,ce au sarcini egale cu +30 nC și -27 nC, aflate la o distanță de 9 cm unul de altul (K=9x109Nm2/C2)
N
27 N
270 mN
2,7 MN
7.
MULTIPLE SELECT QUESTION
5 mins • 1 pt
Două sfere identice omogene,distanța dintre centrele cărora este egală cu 5m, se atrag cu o forță de 26,68 nN. Determinați masa unei sfere ᵧ=6,67x10-11Nm2/kg2).
100 mg
100 g
1000kg
100 kg
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