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20 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Speed equation |
Speed=distance÷time |
= ÷ |
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Types of waves |
Longitudinal wave *s - Movement of the particles are parallel to the motion of the energy. ...Transverse wave *s - movement of the particles are at right angles (perpendicular) to the motion of the energy. ...Surface wave *s - particles travel in a circular motion. |
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How do magnets attract? |
The attract through the magnetic field strength |
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Weight equation |
Weight = mass x gfs(gravitational field strength |
W = m g |
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Work done |
Work done = force x distance |
W = F d |
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Force |
Force = spring constant x extension |
F = k e |
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Acceleration |
Acceleration = change in velocity ÷ time |
A= v/t |
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Resultant force |
R. Force = mass x acceleration |
F = m a |
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Kinetic energy |
K.E = 0.5 x mass x velocity2 |
KE = 1/2 MV2 |
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Gravitational potential energy |
GPE = mass x gfs x height |
GPE = m g h |
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Power (time) |
Power = energy ÷ time |
P = E/T |
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Efficiency (energy) |
Efficiency = useful energy ÷ total energy |
To get a % multply result by 100 |
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Wave speed |
W.S = frequency x wavelength |
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Potential difference (voltage) |
P.d = current x resistance |
V = I R |
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Charge |
Charge flow = current x time |
Q = I t |
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Power (current2 and resistance) |
Current = current x resistance |
P = I2 R |
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Power (current and potential difference) |
Power = current x P.d |
P = I V |
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Power (P.d and resistance) |
Power = potential difference 2 ÷ reistance |
P = V2 / R |
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Potential difference (energy and charge) |
P.d = energy ÷ charge |
V = E / Q |
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Density |
Density = mass ÷ volume |
P = m / v |
