Cheatography

# Tahsili Physics (States Of Matter) Cheat Sheet by TheGoldenClover

2024 Tahsili Physics: States of Matter

### Thermal Energy

 Thermal Energy total energy of molecules in a substance thermal energy is propor­tional to the no. of molecules Total Energy the sum of the potential and kinetic energies Temper­ature the average kinetic energy of molecules in matter Thermal equili­brium a state in which two substances have the same temper­ature Transm­ission of Thermal Energy conduction - convection - radiation Calori­meter an object used to measure the heat of chemical and physcial reactions

### Interm­ole­cular Forces in Fluids

 Interm­ole­cular Forces Forces between molecules Cohesive Force Attractive forces between molecules of the same type, such as surface tension Surface Tension the property of the surface of a liquid that allows it to resist external forces Adhesive Forces Forces of attraction between a liquid and a solid, such as capill­arity Applic­ations of Capill­arity clothes absorbing water, and water moving up stems to leaves Pascale's Principle states that, in a fluid at rest in a closed container, a pressure change in one part is transm­itted without loss to every portion of the fluid and to the walls of the container. Applic­ation of Pascale's Principle Hydraulic Lift thermo­couple a sensor that detects temp

### Specific Heat

 Specific Heat The amount of heat energy required to raise one kg of matter by 1 degree C Transf­erred Heat Energy Formula Q = mcΔT (c is the specific heat) latent heat of fusion the amount of heat energy required to melt 1 kg of a substance latent heat of fusion formula Q = mHf (Hf = heat of fusion) Latent Heat Of Vapori­zation the amount of heat energy required to evaporate 1 kg of a substance Latent Heat Of Vapori­zation Formula Q = mHv (Hv = heat of vapori­zation)

### Buoyant Force and Liquid Pressure

 Fluid's Pressure P = ρgh (ρ = density, g = 9.8, h = height) Archim­edes' principle states that a body immersed in a fluid is subjected to an upward force equal to the weight of the displaced fluid Buoyant Force the force acting on an object opposite to gravity by a fluid in which it is submerged, opposing the weight Buoyant Force Formula F = ρ(fluid)Vg applic­ations of the buoyant force ships, submarines Viscosity a measure of an object's resistance to flow Bernou­lli's principle states that in horizontal fluids, the higher the velocity, the lower the pressure applic­ations of bernou­lli's principle spry paint, perfume atomizer Solid Expansion a change in the length, width, or height of a solid same depth = same pressure

### Thermo­dyn­amics

 The First Law Of Thermo­dyn­amics E = Q - W The Second law Of Thermo­dyn­amics the law of entropy Entropy The measure of a system's useless thermal energy, or disorder Entropy Formula ΔS = Q/T Heat Engine a device that converts thermal energy into work Efficiency of a Heat Engine Eff = W/Qh or Eff = ( Qh - Qc / Qh ) Heat engine energy relations Qh = W + Qc Density density = m/V Pressure P = F/A

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