Recent content by bbolddaslove

i.e. if there is an A1A2 there is also a -A2A1

So the reason the answer is 0 is because every term in which epsilon does not equal 0 has an equal and opposite term somewhere else.

If i=1, j=2, k=3, we have the ith component of A multiplied by the jth component of A? But this will always equal 0 because unit vectors i and j when multiplied = 0. Any variation other than that when i=j will yield the same response. And any variation where i=j means that epsilon=0. Is this...

Homework Statement Prove that (AxB) is perpendicular to A *We know that it is in the definition but this requires an actual proof. This is what I did on the exam because it was quicker than writing out the vectors and crossing and dotting them. Homework Equations X dot Y = 0 when...

Thank you!

I got .370N*k_b where k_b is the Boltzmann constant 1.38E-23, does that look like yours?

Okay so I recomputed the temperature using -(Tf-Tr) and got 400. From there i got left S= (3/2)N*ln(2) (Tf/Tl = 2) which gave me 1.04N J/K. On the right I got S=3N*ln(4/5) which was -.669N J/K. I summed them, but I think I'm still missing a k_b somewhere. I crossed them out in the same step...

Homework Statement A container is divided into two parts by a thermally conducting wall. There are N atoms of a monatomic ideal gas on the left side, 2N on the right. The gas on the left is initially at absolute temperature 200K, the gas on the right at 500K. a. After thermal equilibrium...