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Physics – Kinetic Theory

IIT JEE Main | Advanced | BITSAT | SAT | NEET | AP Physics | MSAT | MCAT | Course for high school, college
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Platform: Udemy
Video: 3h 25m
Language: English
Next start: On Demand

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9.0 / 10

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9.9 / 10
This course was last updated on 3/2022.

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7.7 / 10
Video Score: 8.1 / 10
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Table of contents

Description

Kinetic Theory
•Equation of state of a perfect gas
•Work done in compressing a gas
•Kinetic theory of gases −
•Assumptions
•Concept of pressure
•Kinetic interpretation of temperature −
•rms speed of gas molecules
•Degrees of freedom
•Law of equi-partition of energy (statement only) and application to specific heat capacities of gases
•Concept of mean free path
•Avogadro’s number
SUMMARY
1. The ideal gas equation connecting pressure (P), volume (V) and absolute temperature (T ) is PV = μ RT = kB NT.  Real gases satisfy the ideal gas equation only approximately, more so at low pressures and high temperatures.
2. The temperature of a gas is a measure of the average kinetic energy of a molecule, independent of the nature of the gas or molecule. In a mixture of gases at a fixed temperature the heavier molecule has the lower average speed.
3. The law of equipartition of energy states that if a system is in equilibrium at absolute temperature T, the total energy is distributed equally in different energy modes of absorption, the energy in each mode being equal to kB T. Each translational and rotational degree of freedom corresponds to one energy mode of absorption and has energy kB T. Each vibrational frequency has two modes of energy (kinetic and potential) with corresponding energy.
4. Using the law of equipartition of energy, the molar specific heats of gases can be determined and the values are in agreement with the experimental values of specific heats of several gases. The agreement can be improved by including vibrational modes of motion.

POINTS TO PONDER
1. Pressure of a fluid is not only exerted on the wall. Pressure exists everywhere in a fluid. Any layer of gas inside the volume of a container is in equilibrium because the pressure is the same on both sides of the layer.
2. We should not have an exaggerated idea of the intermolecular distance in a gas. At ordinary pressures and temperatures, this is only 10 times or so the interatomic distance in solids and liquids. What is different is the mean free path which in a gas is 100 times the interatomic distance and 1000 times the size of the molecule.
3. The law of equipartition of energy is stated thus: the energy for each degree of freedom in thermal equilibrium is kB T. Each quadratic term in the total energy expression of a molecule is to be counted as a degree of freedom. Thus, each vibrational mode gives 2 (not 1) degrees of freedom (kinetic and potential energy modes), corresponding to the energy 2 kB T = kB T.
4. Molecules of air in a room do not all fall and settle on the ground (due to gravity) because of their high speeds and incessant collisions. In equilibrium, there is a very slight increase in density at lower heights (like in the atmosphere). The effect is small since the potential energy (mgh) for ordinary heights is much less than the average kinetic energy mv2 of the molecules.   

You will learn

✓ Introduction
✓ Molecular nature of matter
✓ Behaviour of gases
✓ Kinetic theory of an ideal gas
✓ Law of equipartition of energy
✓ Specific heat capacity
✓ Mean free path

Requirements

• Should know calculus, trigonometry

This course is for

• Complete Physics for Engineering and Medical Entrance Exam Preparation. ( IIT JEE Main | Advanced | BITSAT | SAT | NEET etc.)
• AP Physics | MSAT | MCAT | Course for high school, college
• Courses are suitable for students from over 160 countries from Europe, America, Middle East, Asia, Africa and APAC. Notably England, Germany, France, Sweden, Ireland, Scotland, USA, Canada, UAE, Saudi, Qatar, Kuwait, Malaysia, Indonesia, Myanmar, Newzealand, Australia, South Africa, South Korea, Nigeria, etc

How much does the Physics - Kinetic Theory course cost? Is it worth it?

The course costs $14.99. And currently there is a 25% discount on the original price of the course, which was $24.99. So you save $10 if you enroll the course now.

Does the Physics - Kinetic Theory course have a money back guarantee or refund policy?

YES, Physics – Kinetic Theory has a 30-day money back guarantee. The 30-day refund policy is designed to allow students to study without risk.

Are there any SCHOLARSHIPS for this course?

Currently we could not find a scholarship for the Physics - Kinetic Theory course, but there is a $10 discount from the original price ($24.99). So the current price is just $14.99.

Who is the instructor? Is studi live a SCAM or a TRUSTED instructor?

studi live has created 115 courses that got 13 reviews which are generally positive. studi live has taught 111 students and received a 4.4 average review out of 13 reviews. Depending on the information available, studi live is a TRUSTED instructor.
Online Learning
Studi Live is an Indian educational venture based in Mumbai. The founders of this portal are into education and technology domains since more than 20 years. Studi Live currently offers online and live lectures for IITJEE and NEET preparation.
The portal will eventually add courses for school students from 5th to 12th, Olympiads, Professional Courses, Commerce and Software Programming for all levels. The Studi Live portal, as the name suggests, offers online live lectures in interactive mode. The site uses highly safe and secure WEBEX platform for online lectures.
Unlike most of the other edtech portals, Studi Live is a collaborative and activity-based platform which strives to conform to the New Education Policy by the Government of India.

9.0

CourseMarks Score®

9.9

Freshness

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Feedback

7.7

Content

Platform: Udemy
Video: 3h 25m
Language: English
Next start: On Demand

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