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PV = (1/3)Nm(c^2) and P=1/3ρ(c^2) derivation. A Level Physics A-A*
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TURN CAPTIONS ON as it improves your learning! Make your own notes, pause the video as required.
If you get stuck, comment below and I will do my best to answer all queries.
Lesson Objectives: To derive the formula PV = (1/3)Nm(c^2) and P = 1/3ρ(c^2). This is usually covered the Kinetic and Molecular theory of Gases part of the course.
Description: In this video I outline how to derive both formulas. This is a long proof and I suggest you look for key steps when remembering it.
First look at the rate of change of momentum to get the force and then get pressure by using P = F/A.
Then you want to get rid of the time by looking at the velocity of one of the particles.
Then adapt the formula for N particles
Finally the mean square speed should be incorporated
Prior knowledge videos: Ensure that you understand why a gas can exert pressure
Comment below if you get stuck – I will do my best to answer all queries
About CeerazzleDazzlePhysics Who am I? I am a REAL fully qualified teacher/Social media Influencer with over 10 years of teaching in both the state and independent sector. I simply want to share my expertise with you all and help you achieve the grade you deserve because anyone can do Physics! Remember anyone can do Physics All the best and good luck with your studies!
Making videos is very time consuming and every little bit helps me to keep going, sharing my knowledge with everyone for FREE
Want to know more about me? Follow my TikTok,
Regards
Ceerazzledazzle
#alevelphysics #kinetictheoryofgases #kinetictheory #ceerazzledazzlephysics #physics #gases #gaspressure #diversityinphysics
TURN CAPTIONS ON as it improves your learning! Make your own notes, pause the video as required.
If you get stuck, comment below and I will do my best to answer all queries.
Lesson Objectives: To derive the formula PV = (1/3)Nm(c^2) and P = 1/3ρ(c^2). This is usually covered the Kinetic and Molecular theory of Gases part of the course.
Description: In this video I outline how to derive both formulas. This is a long proof and I suggest you look for key steps when remembering it.
First look at the rate of change of momentum to get the force and then get pressure by using P = F/A.
Then you want to get rid of the time by looking at the velocity of one of the particles.
Then adapt the formula for N particles
Finally the mean square speed should be incorporated
Prior knowledge videos: Ensure that you understand why a gas can exert pressure
Comment below if you get stuck – I will do my best to answer all queries
About CeerazzleDazzlePhysics Who am I? I am a REAL fully qualified teacher/Social media Influencer with over 10 years of teaching in both the state and independent sector. I simply want to share my expertise with you all and help you achieve the grade you deserve because anyone can do Physics! Remember anyone can do Physics All the best and good luck with your studies!
Making videos is very time consuming and every little bit helps me to keep going, sharing my knowledge with everyone for FREE
Want to know more about me? Follow my TikTok,
Regards
Ceerazzledazzle
#alevelphysics #kinetictheoryofgases #kinetictheory #ceerazzledazzlephysics #physics #gases #gaspressure #diversityinphysics
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