Attention physics lovers!

Though NSEP is in November but i think its never too early. Therefore in this discussions we would try to cover as every concept at a stretch.

- Every week would have a topic for discussion and we would talk about every twist and turns in that topic so our journey to the mysterious island of physics start today.

I would also post questions in set named "That`s why I love physics" every week which I feel will definitely help.

i would like to include one thing out that the one who is good in one topic should help us out here.

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## Comments

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TopNewesti invite @Archit Agrawal @Prakhar Bindal @Somyaneel Sinha ,@ Pankaj gupta @Gauri shankar Mishra ,@Shiv Agarwal ,@Jyotisman Das ,@Nihar Mahajan @Rajdeep Dhingra @Swapnil Das @avn bha ,@Abhineet Nayyar @Zerocool 141,@Anirban Mandal for participating in the discussion.

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Hey , All your mentions are wasted. Even I didn't receive mine. I wanted this thing badly. Let's get started.

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I would like you to keep the topics related to circuits and electrodynamics.

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Thanks for inviting me. Can we recommence?

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Well @Aryan,I think i would like to join in to this stuff.I would really appreciate if you let me in.Since I haven't been active much,So if you could help me with things like where to start solving stuff? Thanks!

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definately you can join .anyone can take part in the discussion i just invited some people so that at least some people can get to know about it.

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Ok guys lets start with Level 2 one i mean INPHO.Check out my newest post .

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You qualified NSEP? What were your marks?

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170 something just qualified :P.

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@puneet manglaPlease give some advice for NSEP. Also what is the name of your book ?

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i know him its just a title and the ques are from different CPP,books and class problem .

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Can someone please tell me the cuttoff of nsep which was held on 22 november !!!!!

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different for different states.

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U know for UP

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here is my 3rd problem 'can you do it in 3 minutes'

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part-2 so here is my next ques 'may-be-this-is-more-easy-then-you-think' you can find it my set that's why i love physics

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Are all of you in Slack Chat ? If not join by clicking here. After you all have joined leave a reply to this comment.

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I have joined it.

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I have added you in the channel.

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aaj aa raha hai.

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@aryan goyat@Gauri shankar Mishra @Jyotisman Das @Ayush Agarwal @Aniket Sanghi @Somyaneel Sinha @Archit Agrawal @Anirban Mandal @Shiv Agrawal

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I have already added @Gauri shankar Mishra@Aniket Sanghi@Prakhar Bindal@Swapnil Das@Adarsh Kumar to the channel on slack. Rest of you inform me when you join slack.

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## nsepbooster , it is a private channel. I have added you in it.

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Comment deleted Apr 26, 2016

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Firstly i think we should fix a time each day for discussion otherwise only few people will participate

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great then 1-3pm tommorow

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I Invite @Aniket Sanghi Too

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Discussion is here or somewhere else

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On Slack.

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click here. Login by entering your email and all.

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please choose a topic for discussion.

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Mechanics!

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When are we starting. We should start @aryan goyat @Gauri shankar Mishra @Anirban Mandal

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now only.

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Hey should we start with mechanics?

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Exactly. I am seriously impatient.

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Thank You for inviting me. I will definitely take part in it once my board exams are over. It will end on 15th of March.

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You're in 10th? Boards?

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Sorry. I meant Eleventh Final Exams.

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Aryan invites @Archit Agrawal @Somyaneel Sinha @Jyotisman Das @Abhineet Nayyar @Zerocool 141 @Anirban Mandal

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hey thanks ! you should first read the underwritten text and then try my 2 questions on internal energy in set "that`s not why i love physics" and then we will begin with discussion on work.

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Most people have exams currently. 21st March is mostly end date for people's exams. We'll start then.

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--------FIRST LAW-----

the base of thermodynamics lies in the above three alphabets,U,Q and W. W-work done by the system(remember "BY") Q-amount of heat given to gas U-intenal energy we already discussed about internal energy in our previous session and it`s more than clear now. What is "W-work done" if anyone could define and on what factors does it depend?Log in to reply

to deepen the concepts of work let us consider the situation.

state in this case what will be zero heat supplied or work done by the system and why?Log in to reply

But i want more people to participate not only just 2 people

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--------FIRST LAW-----

the base of thermodynamics lies in the above three alphabets,U,Q and W. W-work done by the system(remember "BY") Q-amount of heat given to gas U-intenal energy What is intenal energy if anyone could define?(there would be a session of cross-questioning and answering at 1:00 pm on monday which would help us to deepen our concepts and then i would post a question related to topic,so be ready with the answers )Log in to reply

Internal Energy Of Any System (Not necessarily an ideal gas ) can be simply defined as sum of the individual energy of each molecule (including kinetic,rotational,vibrational) in a frame wherein the centre of mass of the system is at rest

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Nice way of making center of mass at rest so as to express that we do not include energy due to external force field.

Now let us consider a case in which there is a container containing an ideal gas ,two situation are given state what is the change in internal energy using defination of it. take all the walls as adiabatic including the piston one.

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Any factor that will change a and b (vanderwaal's constants) will also alter internal energy

a is a measure of intermolecular force of attraction and b is responsible for excluded volume of a real gas

i also found a quite good piece of information at this link

http://public.wsu.edu/~scudiero/documents/Homework3-hints.pdf

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We must have U+W = 0 . As the piston is moving then the volume of the gas will increase (gases have sufficient entropy to enclose whole of the volume they are put in). Hence work done by the gas would be postive (W = P(V2 - V1) ) .Now As W Is positive U Will be negative.

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What is difference between internal energy of ice and water(both at same temperature ie O degree celcius)?

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i have posted 1st ques for nsep in set 'that,s why i love physics' all of you should try it it title is 'Elliptical cage'

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Thanks for inviting me! I would love to join the discussion. I am good at application part of first law, so I may be of help.

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