TEST DE EVALUARE – FORȚA Clasa a VII-a
Quiz
•
Physics
•
7th Grade
•
Practice Problem
•
Hard
D Dinu
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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Raportul dintre greutățile a două corpuri, aflate în același laborator, este: G1/G2=2. Atunci sigur este valabilă următoarea relație:
g1/g2=2;
ρ1/ρ2=2
V1/V2=2
m1/m2=2;
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Masa unui corp a cărui greutate este G = 1N, are valoarea:
m = 1kg
m = 0,1kg
m = 102g
m = 1g
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mărimile vectoriale sunt complet caracterizate prin:
Orientare
direcție și sens
modul și orientare
modul și direcție
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dacă g = 10N/kg, atunci masa unui corp, care are greutatea de 5N este:
0,5g
5g
50g
500g
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Un resort are constanta elastică 500N/m. O forță de 40N îi produce o alungire de:
0,08 cm
5cm
8 cm
12,5 cm
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O forță de 15N produce alungirea de 5cm atunci când acționează asupra unui resort elastic. Constanta elastică a resortului este:
300N/m
75N/m
30N/m
3N/m
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Un dulap este împins cu viteză constantă, acționând asupra lui cu o forță de 90N. Forța de frecare dintre dulap și podea este de:
45N
90N
100N
50N
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