Recent content by Hummel

I totally appreciate the PDF attachment. I will get back once i completely go through it and if if we have to iron out any kinks.

Sir,my question was how do you define entropy for irreversible process? apart from that,How do you determine S(B) and S(A)?

What is the definition of entropy of a thermodynamic irreversible process? In the case of reversible process from initial state 'a' to final state 'b' ,one may define entropy by 1) Constructing infinitely many reservoirs having temperatures corresponding to the temperature at every...

Initially assuming the liquid and the surroundings are at the same temperature,let us proceed. First let us consider the evaporating liquid which is the object of interest ,not the surroundings. When you say a substance is at a constant temperature,the average KE of the molecules is a...

Hey sorry i did attach it but here i have attached it again.

I know you have got a lot of answers but i don't think they have answered your third question involving other cases.I have made a rough sketch of a problem(in the attachment) in which friction accelerates a block(block-2) from zero velocity to a finite velocity.Please pardon my rough sketch and...

Why do you expect no current in the circuit? any reasons?(pardon my rudeness if any) First of all ,you have to understand what parameters we can control and what we cannot ,assuming a normal dc voltage source (a battery),and a given resistance wire. ->Now you can choose the voltage by...

For takeoff-roll https://www.google.co.in/search?q=takeoff+roll&oq=takeoff+roll&aqs=chrome.0.57j0j62l3.2681j0&sourceid=chrome&ie=UTF-8 there are several pages which use the word "take-off" roll.( i do not mean the rolling takeoff by take-off roll) "but anyway that's not the point" My...

the question is about the connection between the horizontal velocity and the normal reaction under non-ideal conditions if any?

Answering the question First of all ,i'm sure the acceleration to takeoff speed on the runway is called take-off roll second of all the question has not been answered for at least case 1.The popular idea is that the nosewheel should not taxi at above certain speeds because of its fragile...

Case 1: An airplane should not exceed upper limit horizontal velocity while on takeoff roll(or even during taxiing on certain roads).V-Rotation(VR)is an indication of the maximum horizontal velocity,a nose-wheel can handle.Some people claim that nose-wheel has an upper limit to normal reaction...