PHYSICS REVISION
heating can be transferred by
condiction
comvection
radiation
radiation travels in
waves
why are metals good condictors
they have free electrons that collide with the atoms
thermal energy
energy contained in the vibration of its particles
chemical energy
energy stored in the bonds between particles
elastic potential
when an elastic object changes shape in a reversible way
gravitational enegy
stored when an object is moves away vertically from a gravitational field
shc
the amount of energy needed to raise the temp of 1kg of a substance by 1 degree
newtons 1st law
an objectt will not change its motion unless a force acts on it
newtons third law
when two objects interact, they apply forces to each other of equal magnitude and opposite direction.
newtons second law
the force on an object is equal to its mass times its acceleration.
density
mass oer unit of volume
1g/cm =
1000kg/m