Equations Flashcards
What is the equation for work done
Work done = force x distance
What is the equation for power
Power = energy transferred/ time
What is the equation for efficiency
Efficiency = useful power output / total power input x100
What is the equation for weight
Weight = mass x gravitational feild strength
What is the equation for kinetic energy
Kinetic energy = 1/2 (mass x speed) ^2
What is the equation for a change in an objects Gravitational potential energy store
Change in objects GPE store = weigth x change in heightxgfs
What is the equation for moment
Moment=forcexdistance
What is the equation for momentum
Momentum(kg m/s)=mass x velocity
In a closed system the momentum before an event is equal to the momentum after an event
What is the equation for pressure
Pressure =force/area
What is the equation for resistance
Resistance (ohms)= potential difference(volts )/current(A)
Current= potential difference/ resistance
What is the equation for resultant force
Resultant force(N) =mass (kg)x acceleration (m/s2)
What is the equation for the force applied on a spring
Force applied on spring =spring constant x extension
What is the equation for pressure in fluids
Pressure in fluids=height of column(m)x gfs(n/kg) xdensity(kg/m3)
What is the equation for charge flow
Charge flow (coulombs)=current(amps)xtime(seconds
What is the equation for potential difference
Potential difference(volts)=energy transferred(J)/charge flow(Coloumbs,C)
