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Physics A-level > Physical equations > Flashcards

Physical equations Flashcards

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1
Q

Weight

A

mass x gravitational field strength (g)

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2
Q

Work done

A

force x distance along the line of action of the force (s)

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3
Q

Force applied to a spring

A

spring constant x extension (e)

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4
Q

Moment of a force (M)

A

force x distance normal to the direction of force (d)

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5
Q

Pressure (p)

A

force normal to a surface area(F) / area of that surface area (A)

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6
Q

acceleration (a)

A

change in velocity (Δv) / time taken (t)

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7
Q

resultant force

A

mass x acceleration

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8
Q

momentum

A

mass x velocity

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9
Q

kinetic energy

A

mass x (speed)2 x 0.5

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10
Q

Gravitational potential energy (Ep)

A

mass x gravitational field strength x height (h)

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11
Q

Power (P)

A

energy transferred (E) / time

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12
Q

Power (P)

A

work done / time

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13
Q

efficiency 1

A

useful output energy transfer / total input energy transfer

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14
Q

efficiency 2

A

total power output / total power input

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15
Q

wave speed

A

frequency x wavelength

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16
Q

charge (Q)

A

current(I) x time

17
Q

potential difference (V)

A

current x resistance (R)

18
Q

power (p)

A

potential difference x current

19
Q

power (resistance)

A

(current)2 x resistance

20
Q

energy transferred (E)

A

power x time

21
Q

energy transferred (charge)

A

charge x potential difference

22
Q

density (p)

A

mass / volume

23
Q

magnification

A

image height / object height

24
Q

period (T)

A

1 / frequency

25
Q

change in thermal energy

A

mass x specific heat capacity x temperature change

26
Q

Force

A

Kgms-2

27
Q

Work done

A

Kg m2 s-3

28
Q

Energy

A

Kg m2 s-2

29
Q

Resistance

A

m2 kg s-3 A-1

Physics A-level (11 decks)

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