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fenomene mecanice 6

Authored by dragostina radulescu

Physics

6th - 7th Grade

Used 7+ times

fenomene mecanice 6
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10 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Intre marimile fizice : volum ,masa si densitate ale unui corp, exista relatia

m= V/ p

m = p /V

m = p x V

p = V / m

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Masa unui metru cub de apa este :

1000 kg

1 kg

100 kg

0,01 t

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Marimea fizica care masoara taria unei interactiuni este :

masa

forta

greutatea

viteza

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Greutatea corpului este :

egala cu g

egala cu masa corpului

direct proportionala cu masa corpului

forta de atractie exercitata de Pamant ,asupra acelui corp

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Forta elastica care apare in corpurile deformate elastic si se opune fortei deformatoare

are aceeasi directie ,dar sens opus fortei deformatoare

are aceeasi directie si acelasi sens cu forta deformatoare

forta elastica are sensul indreptat de sus in jos

forta elastica nu depinde de directia si sensul in care actioneaza

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Forta elastica se poate calcula utilizand urmatoarea relatie matematica :

Fe = k / Dl

Fe = k . Dl

Fe = Dl / k

Fe = k + Dl

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Intensitatea campului gravitational (acceleratia gravitationala) se noteaza cu g si se calculeaza cu relatia :

g = G/ m

G =m / g

g = m x G

g = G+ m

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