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24 Cards in this Set
- Front
- Back
Weight |
Weight= mass X gravitational field strength
W=mg |
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Work done |
Work done=force X distance
W= Fs |
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Force applied to a spring |
Force applied to a string= spring constant X extension
F= ke |
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Distance |
Distance=speed X time s= vt |
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Acceleration |
Change in velocity —————————- Time a= /\v —— t |
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Resultant force |
Mass X acceleration
F= ma |
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Momentum |
Mass X velocity
p= mv |
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Kinetic energy |
1/2 X mass X speed* |
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Gravitational potential energy |
Mass X gravitational field strength X height
Ep= m X 9.8 X h |
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Power |
Energy transferred —————————- Time
P= E — t |
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Power |
Energy transferred —————————- Time
P= E — t |
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Power |
Work done —————- Time
P= W —- t |
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Efficiency |
Useful output transfer ————————————- Total input energy transfer |
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Efficiency |
Useful output transfer — — — — — — — — — — — — - Total input energy transfer |
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Efficiency |
Useful power output —————————— Total power input |
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Charge flow |
Q= It
Current X time |
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Potential difference |
Current X resistance
V=IR |
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Potential difference |
Current X resistance
V=IR |
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Power |
Potential difference X current
P=VI |
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Power |
(current)* X resistance
P=I*R |
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Energy transferred |
Power X time
E= Pt |
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Energy transferred |
Charge flow X p.d
E= QV |
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Energy transferred |
Charge flow X p.d
E= QV |
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Density |
p= m —- V
Mass ———- Volume |