can u please enumerate some difference between the first and second law of thermodynamics...or compare them..?

Question

please enumerate changes

Answer 1

1st law in a nutshell--total energy is conserved--you can't get more than you pay for

2nd law--entropy (the number of available states--a measure of disorder) increases--so you never even really get everything you pay for--some always gets wasted.

Answer 2

The first law of thermodynamics is a balance of Energy Equation which relates how much Energy input is required to obtain Work output out of a heat Engine.

The Second law is related to the first law . It basically qualifies the First law by indicaying that you cannot obtain The same work continuously with the initial input Energy.
That means to obtain more work out put, additional input Energy is required. And to obtain work a price must be paid in terms of losing mass and energy to the surrounding Space.
In simple statement is basically says , in the Universe ,"you obtain nothing for nothing."That means all the Stars decay and do not live for ever, as everything else in the Universe degrades with Time.

A good example is a moving car.In order to increase its velocity more power has to be added to the engine.As you add power(press the Gas pedal) Some of the energy produced shows up as the additional energyto cause the car to increase velocity, and the rest is exhausted out of the Exhaust system as hot gases(energy lost to the surroundings)

The Energy lost to the surroundings as a function of heat temperature is called Entropy. Entropy is really related to the Amount of mass is disipated in Space which may or may not be absorbed by other rmass structures in Space. Therfore Entropy is also what causes some of the floating mass structures in the Space ot the Universe appear to be expanding.

Answer 3

http://ebtx.com/ntx/ntx14a.htm

I found it! This is a good website


Delta U = Q + W : 1st Law

U is the internal energy
Q is heat ransfer
W is work done on system

the work done on the system will depend only on the initial and final equilibrium states and not on the process by which that change is brought about