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20 Cards in this Set
- Front
- Back
- 3rd side (hint)
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The cosine rule |
Back (Definition) a^2=(b^2) + (c^2) - 2bc cos A |
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Weight = |
Weight = mass x gravitational field strength |
W =mg |
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Work done = |
Work done = force x distance (along the line of action of the force) |
W=Fs |
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Force applied to a spring = |
Force applied to a spring = spring constant x extension |
F = ke |
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Moment of a force = |
Moment of a force = force x distance (normal to direction of force) |
M=Fd |
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Pressure = |
Pressure = force normal to a surface / area of that surface |
P=F/A |
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Distance = |
Distance = speed x time |
s=vt |
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Acceleration = |
Acceleration = change in velocity / time taken |
A=/\v / t |
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Resultant force = |
Resultant force = mass x acceleration |
F=ma |
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Momentum = |
Momentum = mass x velocity |
p =mv |
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Kinetic energy = |
Kinetic energy = 0.5 x mass x velocity^2 |
Ek=0.5mv^2 |
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Gravitational potential energy = |
Gravitational potential energy = mass x gravitational field strength x height |
Ep=mgh |
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Power = (both equations) |
Power = energy transferred / time Power = work done / time |
P=e/t P=w/t |
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Efficiency = (both equations) |
Efficiency = useful output energy transfer / total input energy transfer Efficiency = useful power output / total power output |
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Wave speed = |
Wave speed = frequency x wavelength |
v=f/\ |
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Charge flow = |
Charge flow = current x time |
Q = It |
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Potential difference = |
Potential difference = current x resistance |
V = IR |
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Power = (both equations involving current) |
Power = potential difference x current Power = (current)^2 x resistance |
P=VI P=(I^2)*R |
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Energy transferred = (both equations) |
Energy transferred = power x time Energy transferred = charge flow x potential difference |
E=Pt E=QV |
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Density = |
Density = mass / volume |
p=m/v |
