physics 🔭🩸
Density
a measure of the amount of mass in a given volume
density si unit
kg/m^3
density equation
mass / volume
internal energy
the total amount of potential and kinetic energy in all the particles of a system
matter
anything that gas mass and takes up space
when a solid melts, why do the particles become faster
when a solid melts, the particles gain energy from their surroundings- why they vibrate faster
Temperature
the average amount of kinetic energy in all the particles in a system
gas pressure
the rate of particles colliding with the walls of the container and how hard the collisions are. as the gas particles are moving quickly they exert a force on the wall of the container when they hit and the faster the particles move the greater the force will be
hiw to calculate pressure
pressure = force / area
si unit for pressure
si unit for pressure = pa or n/m^2
work
the transfer of energy by a force. when a force is applied the internal energy of the gas and can increase in temperature
boyles law-
p1 v1 = p2 v2
charles law
v1/ t1 = v2/t2
pressure
the force exerted by unit area
pressure equation
force/ area
fluid
a substance that has no fixed shape and yields easily to external pressure in a gas or liquid. in steady fluid flow the fluids density remains constant at each point . fluids exert a force a force on every surface they collide with
conductors
the particles closest to the heat source begin to vibrate. these vibrations are passed onto the next particles, which pass on vibrations throughout the material. They contain delocalised electrons that collide with ions further away from the source of heat and transfer their energy more quickly.