Numerical Problems | Statistical Mechanics & Thermodynamics |Chapter 16 | Physics 12| LEC 5

Numerical Problems | Statistical Mechanics & Thermodynamics |Chapter 16 | Physics 12| LEC 5 #FederalBoard #ModelTownHumak #EducationalChannel #siranjumteaches #nationalbookfoundation 📚 Physics Class 12 – Chapter 16: Statistical Mechanics & Thermodynamics 🎓 Lecture 5: Solved Numerical Problems | Root Mean Square Speed & Related Concepts 📘 Textbook: National Book Foundation (NBF) | Board: FBISE This lecture includes important numerical problems from Chapter 16 of Class 12 Physics. These questions help you understand the concept of root mean square speed, temperature dependence, gas molecule energy, and molecular count at STP. Each problem is solved step-by-step with full concept explanation. 🕐 Video Timestamps: 00:00 – RMS Speed of Helium at 15°C → Root mean square speed of helium atom (T = 15°C, m = 6.64×10⁻²⁷ kg) 03:02 – Temperature for RMS Speed Equal to Escape Velocity → Find temperature where RMS speed of oxygen equals Earth's escape velocity (v = 11.2 km/s) 06:40 – RMS Speed & Kinetic Energy at 400 K → Calculate RMS speed and kinetic energy of gas (T = 400 K, m = 6.4×10⁻²⁷ kg) 09:59 – Temperature for Double RMS Speed from 27°C → At what temperature does RMS speed become double of its value at 27°C? 15:25 – RMS Speed of Argon at 40°C → Root mean square speed of argon gas at 40°C (Molar mass = 39.95 g/mol) 18:10 – Number of Molecules in 1 m³ Gas at STP → Calculate number of gas molecules in 1 cubic meter at standard temperature and pressure (STP) 21:46 – RMS Speed & Pressure Comparison: Hydrogen vs Oxygen → Compare RMS speeds and pressures of H₂ and O₂ (same mass, different volumes) 📌 Learn the physics behind each formula: v_rms = √(3kT / m) Gas laws & kinetic theory in action Concepts of temperature, pressure, molar mass, and molecular count 🔔 Don’t forget to LIKE, COMMENT, SHARE, and SUBSCRIBE to Sir Anjum Teaches for more board-focused Physics lectures! Keywords: statistical mechanics thermodynamics physics 12 physics 12 chapter 16 federal board physics national book foundation physics 12 statistical mechanics and thermodynamics ideal gas law pv = 1/3nm(c^2) root mean square speed mean square speed of gas kinetic theory of gases translational kinetic energy of gas rms speed derivation pv = 1/3nmv^2 derivation molecular motion and pressure kinetic molecular theory ideal and non ideal gases behavior of real gases non ideal gases gas pressure due to molecular motion degenerate matter neutron stars and degenerate matter neutron degenerate matter white dwarfs and neutron stars boson and fermion gases bose-einstein condensate superconductivity and superfluidity quantum states of matter unusual states of matter bose einstein condensates degenerate gas in astrophysics stars and statistical mechanics statistical mechanics model pv = 1/3Nm(c^2) microscopic theory of gases gas laws from molecular model average kinetic energy of gas superfluidity in quantum physics superconductivity phenomenon ideal gas assumptions kinetic energy of molecules pressure in terms of kinetic energy microscopic model of pressure statistical physics class 12 chapter 16 physics 12 fbise physics 12 federal board physics 12 nbf nbf physics class 12 chapter 16 kinetic theory gas laws derivation mean square speed and pressure rms speed and temperature ideal gas equation explained statistical mechanics introduction ideal gas behavior quantum mechanics and gas theory physics of stars and gases physics 12 thermodynamics physics 12 statistical mechanics fbise class 12 physics chapter 16 ✅ 📛 Hashtags: #Physics12 #Thermodynamics #StatisticalMechanics #RMSspeed #FBISE #Class12Physics #Chapter16Physics #GasLaws #MolecularSpeed #PhysicsNumericals #BoardExamPrep #PhysicsLecture #NBFPhysics