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Lucrul mecanic

Authored by Carmen Filip

Physics

7th Grade

Used 195+ times

Lucrul mecanic
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6 questions

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1.

MULTIPLE CHOICE QUESTION

5 sec • 1 pt

Lucrul mecanic este o marime fizica:

scalara

vectoriala

2.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Unitatea de masura pentru lucrul mecanic este:

Newton

Joule

Watt

3.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Un calator efectueaza lucru mecanic:

Cand ridica bagajul

Cand tine mana pe bagaj

Cand tine bagajul in mana nemiscata

4.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Lucrul mecanic efectuat de o forta perpendiculara pe directia de miscare este

negativ

pozitiv

nul

5.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Cand aruncam un corp pe verticala in sus lucrul mecanic al greutatii corpului este:

pozitiv

negativ

nul

6.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

O macara ridica o placa de beton.Lucrul mecanic efectuat de macara este:

pozitiv

negativ

nul

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