Recent content by nod32

Yes my mistake, I mixed them up. The higher q came from equation ii). I guess that makes sense since not all the released energy from the condensation ends up warming the cold stream. So this large difference can be attributed to heat losses? I'm also asked to do an energy balance to verify the...

Homework Statement I performed an experiment using a double pipe heat exchanger. Readings were taken at steady state. Cold water entered the inner tube at 9°C, and its exit temp was 81°C. (flow rate was measured). The outer tube contained steam at 133°C and this temperature remained...

But if the values are over evenly spaced intervals (say 5K)? I remember my prof talking about how carbon dioxide can behave unusually (I don't recall under what circumstances). Could this unusual behavior void some of the assumptions that are made in deriving the Clausius-Clapeyron equation...

Homework Equations d ln(Psat) / d (1/T) = -ΔHvap/R (Clausius-Clapeyron) The Attempt at a Solution When solving for the enthalpy of vaporization using the Clausius-Clapeyron equation, is the resulting value an average over the temperature range? I assume this is the case, because...

its "vector mechanics for engineers 9th Beer and Johnston". From the intro

Well that's confusing So the mass in the example is really 3000lb/32.17ft/s^s I'm glad I don't have to use imperial units for my thermodynamics class!

So is it incorrect to say 1 lb = 0.454 kg?

For example from one of my textbooks So the car has a mass of 3000lb, but then they measure the force applied also in pounds. Unlike SI units where forces are always measured in N and mass in kg.

thats correct I thought about this, but it says "determine the deviation of each device from the gas thermometer". I could just calculate the standard deviation, but that doesn't compare it against the gas thermo.

Homework Statement 4 temperature measuring instruments were compared. readings were taken at 10 points (as temp was increased) 2. The attempt at a solution the wording of the question is what's confusing me. Is each instrument going to have one value for deviation? Or is it asking for a...

Homework Statement Find the inverse The Attempt at a Solution Swapping x and y led me to nowhere. I'm really not sure where to go with this one, and a search online only led to simple problems where the previously mentioned method works.

Thanks for your reply. I can see now why you wouldn't use the difference, because they end up canceling out when you add them anyway. I have one more questions about mechanical equilibrium. I'm working on a more complex problem now and I have to find reaction forces to two given forces. I...

Homework Statement As a block of wood is sanded, it exerts on the disk of the sander a force F of magnitude 1.8N. Knowing that the belt forces (B is 11N and C is 18N) exerted on the 5cm diameter pulley lie in a plane parallel to the yz plane, replace F and the belt forces with an equivalent...