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Fixed mass of gas and the First Law

Fixed mass of gas and the First Law

A non-flow process studies a fixed mass of gas inside a closed boundary, such as a sealed cylinder with a piston. No gas enters or leaves, so any energy change must appear as heating, a change in internal energy, or work done.

Non-flow processes (A-level only) Lesson

  1. A Level
  2. /Physics
  3. /Non-flow processes (A-level only)

Step-by-step lessons on AQA A Level Physics Non-flow processes (A-level only). Each one builds up to exam-style questions. Physics is one of the most mathematically demanding A Levels -- at least 40% of the marks require maths skills at Level 2 (GCSE) standard or above, so build calculation and graph-handling fluency alongside the conceptual content from the start.

Lessons