physics energy, work, power

kinetic energy

the energy store of a moving object

gravitational potential energy

the energy store of an object raised up against a force of gravity

chemical energy

energy stored in bonds between atoms that can be released when chemical reactions take place

Elastic

energy stored in the changed shape of an object

nucleur

energy stored in nucleus of an atom

electrostatic

energy stored when charges are seperated or squashed

internal

thermal stores

define energy

property of an object that’s stored or transferred (to heat up or perform work on object)

define energy transfers

potential energy (available but not used)

4 forms of energy transfers

mechanical work done

electricial work done

heating

waves

KE formula

½ x m x v²

GPE function

mass x gravational field strength x height

Principle of conservation of energy

Energ cannot be created or destroyed, only transferred

Work done formula

Force x distance = Energy transferred

Power formula

Work done/time

Efficiency formula

Useful energy output/total energy input x 100

In production of electricity

Energy is used to heat water to produce steam

the steam turns a turbine

the turbine turns a generator

the generator produces electricity