Recent content by Acut

Wouldn't it be simply P instead of P/2? It's analogous to a lever, and we're applying a force 2P right on the middle of the lever. So the force on the disk would be simply P, wouldn't it? There would be a force P upwards both on the hinge and on the disk so that the sum of the torques on the bar...

Yes, I also assumed that the bar is massless when trying to solve it. And in the original drawing, the bar extends a little bit beyond the disk, but I also guess it should be touching the cylinder on its very end, since there are no indications of the length of the bar extending beyond the disk...

Hi! I'm struggling with this problem from my Mechanics book. It's actually an Engineering book, but this problem actually seems like an elementary Physics problem - if it's not, someone please move it to the appropriate forum. I tried my best to translate it clearly, but if it's ambiguous or...

Have you tried searching their website, under the section "Admissions"?

Astronuc, I know you've mentioned some of the courses a Nuclear Engineer should take, but would you give me concrete examples of how good curricula look like? I'm being offered the chance of taking Nuclear Engineering, but it's the second such course in my country, so my references are weak...

But how do the sub fields in Nuclear Engineer fare when viewed separately?

Does anyone have statistics comparing how Nuclear Engineers' salaries compare to other branches of Enginheering?

You may view the difference in enthalpy as the heat liberated by a process that happens under constant pressure. Some non-rigorous high-school (and even college-level!) textbooks say that enthalpy is energy, which I find awkwardly confusing and unnecessary for the student. When I first studied...

How do protons and neutrons organize themselves in the nucleus? Is there an analogy between this and the best known example of electrons organized in shells in the electrons or is it an unrelated phenomenon?

Then my old chemistry book is wrong. Which is good, because this part didn't make sense :-p. But get to a concrete example. Suppose we have a very simple reaction, whose ΔG can be expressed as: ΔG = - RT ln P0 (equation 1) where P0 is its pressure expressed in atmospheres...

So K values will change based on the unit we choose to measure the pressure and as long we use the same units, we will keep consistency. But ΔG = -RT ln K. So, if the value of K changes based on the units we chose to express pressure, the values of ΔG will be different for the same reaction -...

Yeah, this part of replacing nuclear energy with other forms of energy is what scares me the most if I go to this area. It seems to me that the most exciting jobs in this engineering are related to energy production. This is why I also asked what Nuclear Engineers earn in other areas as well.

Ouch! Why?

And how do the salaries of a nuclear engineer fare in comparison to other branches of engineering?

So we don't actually use pressures or concentrations, but we use unitless activities in the reaction quotient. And for (ideal) solutions, the activity coefficients are equal to one. Equally, each pressure should be multiplied by the activity coefficients. This is similar to what I suggested in...