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Paper 2 Equations - Coggle Diagram
Paper 2 Equations
Power
Energy transferred/ time taken
Energy Transferred= power x time
Energy Transferred =
Voltage x charge
Voltage = V
Charge = C
Voltage x time
voltage x current x time
Charge x time
Current x time
Time taken = energy transferred/ power
Work done / time taken
Power x time = work done
Work done / power = time taken
Work done can also be calculated by force x distance in the direction of the force
Units
Work done = J
Force = N
Distance = m
Force= work done/ distance in the direction of the force
Units
Energy Transferred = joules
Work Done = J
Time = t
Power = w
Electrical Power = current x potential difference
Potential Difference
Current x resisance
Tom wants to test the power he has a 5A current and 10 O resistance, what is the power?
5 X 10= CURRENT X RESISTANCE = 50
Potential difference = 50 V
50/5 = 10
charge = current x time
Current= charge/ time
Time= charge/ current
Charge Units= C
Current Units = A
Time = S
Force Exerted onto a spring = Spring constant x extension
Spring constant= force exerted on a spring/ extension
Extension= force exerted on a spring/ spring constant
Units
Force = N
Spring Constant = N/m
Extension= k
Weight= mass x gravitational field Strength
Weight = N
Mass = kg
Gravitational field strength = N/kg
Wavespeed
Distance/ time
Units
Speed =m/s
Distance = m
time = s
Distance of the wave = Speed x time
Time= distance / speed
Frequency x wavelength
Units
Frequency= Hz
Wavelength = m
wavelength = speed/ frequency
frequency= speed/ length
Efficiency= useful/ total energy
Useful energy= total energy - wasted energy