Physics

Glossary

Density - This is a measure of how many particles there are in a given space. How heavy a material is for its size.
Dissipation - The term used to describe ways in which energy is wasted.

Equations - Energy

Energy Transferred (J) = Power(watts) x Time(secs) 

Kinetic Energy = 1/2 x Mass x Velocity(squared) 

Gravitational Potential Energy (J) = Mass (kg) x Gravitational Field Strength (N/kg) x Height 

Change in Thermal Energy = Mass x Specific Heat Capacity x Temperature Change 

Efficiency = Useful Power Output / Total Power Output 

Equations - Waves

Wave Speed = Frequency x Wavelength 

Equations - Forces

Work Done = Force x Distance 

Force Applied to Spring (N) = Spring Constant (N/M) x Extension (m) 

Moment of a Force (Nm) = Force (N) x Distance (m) 

Distance Travelled = Speed x Time 

Acceleration = Change in Velocity / Time Taken 

Resultant Force = Mass x Acceleration 

Momentum = Mass x Velocity 

Density = Mass / Volume 

Equations - Electricity

Charge Flow (C) = Current (A) x Time (secs) 

Energy Transferred (J) = Charge Flow (C) x Potential Difference (V) 

Potential Difference (v) = Current (A) x Resistance (O) 

Power = Potential Difference (V) x Current (A) 

Equations - Magnetism