Energy Flashcards
1
Q
Kinetic Energy
A
kinetic energy = 0.5 × mass × velocity²
2
Q
Elastic Potential Energy
A
elastic potential energy = 0.5 × spring constant × extension²
3
Q
Gravitational Potential Energy
A
g . p . e . = mass × gravitational field strength × height
4
Q
Change in Thermal Energy
A
change in thermal energy = mass × specific heat capacity
× temperature change
5
Q
Power
A
power = energy transferred x time
6
Q
Efficiency
A
Efficiency = useful power output / total power input
7
Q
Energy Transfers
A
Mechanically - the action of a force.
Electrically - an electrical current.
By radiation - Light waves or Sound waves.
By heating - conduction, convection or radiation.
