First Law of Thermodynamics

thermo-first-law

First Law of Thermodynamics

thermodynamics

Laws

\Delta U = Q - W

Energy balance: change in internal energy equals heat added minus work done

Sign convention: W is work done by the system

[
  {
    "symbol": "ΔU",
    "name": "Change in Internal Energy",
    "unit": "J",
    "siUnit": "J",
    "imperialUnit": "BTU"
  },
  {
    "symbol": "Q",
    "name": "Heat Added",
    "unit": "J",
    "siUnit": "J",
    "imperialUnit": "BTU"
  },
  {
    "symbol": "W",
    "name": "Work Done",
    "unit": "J",
    "siUnit": "J",
    "imperialUnit": "BTU"
  }
]

ΔU, Q, W

first law, energy, heat, work

false