Treball, potència i energia Flashcards

1
Q

Fórmula treball

A

W= F · x · cos(a)

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2
Q

Cos de 0

A

1

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3
Q

Cos de 90

A

0

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4
Q

Cos de 180

A

-1

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5
Q

Cos de 30

A

0,86

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6
Q

Cos de 60

A

0,5

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7
Q

Sin de 0

A

0

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8
Q

Sin de 90

A

1

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9
Q

Sin de 30

A

0,5

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10
Q

Sin de 60

A

0,86

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11
Q

Fórmula potència

A

P= W/t

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12
Q

1 HP quants W són?

A

745W

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13
Q

1 CV qunats W són?

A

736W

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14
Q

Que és l’energia?

A

Capacitat que té un cos per fer un treball. L’energia ni es crea ni es destrueix, només es transforma en altres tipus.

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15
Q

Fórmula Energia mecànica

A

Em=Ec+Ep

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16
Q

Fórmula Energia cinètica

A

Ec= 1/2 · m · v2

17
Q

Fórmula Energia potencial

A

Ep= m · g · h

18
Q

Fórmula Energia potencial elàstica

A

Epe= 1/2 · k · x2

19
Q

Fórmula Força elàstica

A

Fe= -k · x

20
Q

Fórmula forces conservatives (principi de conservació de l’energia)

A

Eca+Epa=Ecb+Epb