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

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

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📚 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

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Keywords:
statistical mechanics
thermodynamics physics 12
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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
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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
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superconductivity phenomenon
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kinetic energy of molecules
pressure in terms of kinetic energy
microscopic model of pressure
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