# Fluids ``` Density(g/cm^3) = mass/volume Volume(cm^3) = mass/density Mass = Density(g/cm^3) * volume(cm^3) Pressure = Force/Area = 1N/1M^2 = 1Pa P(Pressure)V(Volume) = NRT(Temperature) Speed = Wavelength x frequency Frequency = waves/sec 1wave/1sec = 1Hertz ``` Solid has a volume, set shape, and can be compress. Liquid has a volume, flow, but it's shape is it's container. Gas volume and shape is it's container, it can flow and can be compress. Difusion = high concentration to low conceentration. Brownian motion = particles always moving (Not at absoulte zero) Expanding and contracting = Materials expand when heated and contract when cooled. Water doesn't contract when freezes Density can be g/cm^3 or cc or mL Solid -> Liquid = melting Liquid -> Solid = freezing Solid -> Gas = Sublimation Gas -> Liquid = vaporize Liquid -> Gas = condensation Gas -> Solid = deposition ![](https://i.imgur.com/G1gbL1F.png) Presure is how hard and often gas molecules hit you, the more molecules hit you, the more presure you feel. Pressure in a fluid depends on the weight of fluid above. --- ## Buoyancy Buoyant force(or upthrust) Displacement = pushes away/ take the place of Drag is the resistance force that you experance when traveling through air. Drag(Fluid Friction) can be affected by shape(streamlined) or speed.