PHYS 1P23 Study Guide - Final Guide: Gas Constant, Ideal Gas Law, Boltzmann Constant
Document Summary
Ice cube in a glass of warm water- thermal contact allows energy to flow from water to ice cube increasing the temp of the ice causing it to melt. The flow of energy from the water causes the water temp to decrease. When energy flow stops, the ice & water are in t. e: zeroth law of thermodynamics, temp scales, absolute zero= -273. 15k. Internal energy, u, includes the potential energy from molecular interactions & kinetic energy of molecules. It doesn"t include the gravitational potential energy: state variables, temperature (t), pressure (p), volume (v), Internal energy (u) cannot tell how a system arrived at its current state: example 1: heat slowly transferred to gas, causing it to expand and doing work on the piston. Amount of heat transferred equals the work done by the piston. Internal energy is zero: example 2: gas is in one portion of cylinder by a membrane. If punctured the gas fills the whole cylinder.
