Energy Flashcards
(24 cards)
Weight
Mass x gravitational field strength (g)
Work done
Work done= force x distance (along the line of action of the force)
Force applied to a spring
Force applied to a spring= spring constant x extension
Moment of a force
Moment of a force=force x distance (normal to direction of force)
Pressure
Pressure =force normal to a surface /area of that surface
Distance travelled
Distance travelled = speed x time
Acceleration
Acceleration =change in velocity / time taken
Resultant force
Resultant force = mass x acceleration
Momentum
Momentum = mass x velocity
Kinetic energy
Kinetic energy = 0.5 x mass x (speed)*2
Gravitational potential
Gravitational potential =mass x gravitational field strength x height
Power
Power= energy transferred / time
Power
Power = work done / time
Efficiency
Efficiency= useful output energy transfer / total input energy transfer
Efficiency
Efficiency = useful power output / total power input
Wave speed
Wave speed = frequency x wavelength
Charge flow
Charge flow = current x time
Potential difference
Potential difference = current x resistance
Power
Power = potential difference x current
Energy transferred
Energy transferred =power x time
Power
Power =(current)*2 x resistance
Energy transferred
Energy transferred = power x time
Energy transferred
Energy transferred = charge flow x potential difference
Density
Density = mass / volume
