Relationship Between...  The Formula 
Wave Speed, Frequency and Wavelength  
Density, Mass and Volume  
Refractive Index, Angle of Incidence and Angle of Refraction  
Charge, Current and Time  
Mass, Weight and Gravitational Field Strength  
Average Speed, Distance and Time  
Electrical Power, Voltage and Current  
Force, Area and Pressure  
Input Voltage, Output Voltage, Primary Turns and Secondary Turns (Transformer)  
Refractive Index and Critical Angle  
Pressure Difference, Height, Density and Gravitational Field Strength  
 Relationship Between...  The Formula 
Force, Distance and Work  
Energy Transferred and Efficiency  
Energy Transferred and Work Done  
Acceleration, Change in Velocity and Time Taken  
Input Power and Output Power (Transformers)  
Voltage, Current and Resistance  
Change in GPE, Mass, Gravitational Field Strength and Change in Height  
Force, Mass and Acceleration  
Kinetic Energy, Mass and Speed  
Moment, Force and Perpendicular Distance from Pivot  
