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A
B
final velocity v
= u + at
unbalanced Force F
= ma
Kinetic energy KE
= 0.5 mv^2
Potential Energy PE
= mgh
Work done WD
= Force x distance
average speed
= total distance / total time
Voltage V
= IR
Charge Q
= It
Power P
= Energy / time
Momentum
= mv
time
distance / average speed
latent Heat L
= Heat/mass changing state
Weight W
= mg
Resistance R
= V/I
Total resistance in Series
= R1+ R2 +R3 +.....
Power of a lens P
=(1/f ) (f in metres)
Transformer formula
Ns/Np = Vs/Vp
Electrical Power
= ItV
Lawof reflection
angle i = angle r
% efficiency
=useful work done/ total energy used
Mr. Gill
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