- #1

Aladin

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T = 2/3<1/2mv2>=?

As we know

PV=nRT --------- (1) (why did we use this equation for prove above?)

As we know.

n=N/NA (why we don’t put the P=F/A and volume formula)

Put in above equation (1)

PV= N/NA RT---------(2)

Where R/NA= k (k is Boltzman constant)

Equation 2 becomes

PV=NkT

Or

P=NkT/V------------(3) (why we found “P”)

As we know.

P=2/3*N/NA<1/2mv2>-------------(4) (Why we use this equation we can also use this formula)

Comparing 3 and 4. (why we compared)

NkT/V=2/3*N/NA<1/2mv2>.

We get.

kT=2/3<1/2mv2>

or

T=2/3k<1/2mv2>

T=constant<K.E>

T Directly Proportional to <K.E>

Moreover,there are a lot of examples.

I am a college student of 1st year.

I face much difficulty in all these physics Derivations and I learn them by writing again and again. I have neither deep concepts in them nor our teachers tells us about these actual concepts. When we ask about these question that I asked you, hay told that it is just practice. Is it true?

Please explain my this question. I hope that you will solve my this great difficulty in physics.

I will be thankful to you.

Hamid Mahmood

Pakistan