Recent content by tsukuba

hmm, not sure how you get that equation but I'm still not getting the right answer. I will have to ask the professor tomorrow

brackets or no brakets, wouldn't T stay the same when isolating it?

Homework Statement air flows through a device such that the stagnation pressure is 0.6 MPa, the stagnation temperature is 400° C, and the velocy is 570 m/s. Determine the static pressure and temperature of the air at this state. Homework Equations Tt=T + V2 / 2 Cp where Cp is 1.005 Kj/ Kg* °...

Homework Statement Hello everyone, I was hoping I could get someone to help me out please. I am having great difficulty with my thermodynamics course and I have an assignment due tomorrow. I need to reduce the conservation of energy formula so that it applies to Earth so I can work on my...

Homework Statement Hello, Let's say I was given a problem where I have to calculate CD I find everything except CD Now, CD = CD0 + K CL2 I know how to calculate K but I don't know what CD0 is. Would that be a given? or do I have to find it myself? If so, how? Then there's another formula for...

I came to this but now I am not sure how to isolate for n ln(130) n*ln(0.07) = ln(100) n*ln90.08637)

somebody helpppp I have a test tomorrow

the value of n is not given. I just put it there because but what if it was xn = ? solving for n

Homework Statement Hello, I came across a problem where the polytropic index is not given but I've been given P1, P2, V1 and V2. P1V1 = P2V2 (130kPa)(0.007m3)n = (100kPa)(0.08637m3)n ----> n=1.249 Homework Equations PVn=constant I was thinking I would have to use log to figure out n maybe...

I am not sure what the relationship is but yes air at 300K can be considered an ideal gas

he didnt give us any data. He just said Plot 3 constant temperature lines of your choice, e.g., T=300K on a single P-V diagram for air. In addition plot 3 constant pressure lines of your choice, e.g., P=1atm on a single T-V diagram for air.

Homework Statement Hello, My thermodynamics professor gave us homework to plot 3 lines of constant temperature on a PV diagram in excel and 3 lines of constant pressure on a TV diagram. I have no clue how to do this and was wondering if someone could help me Homework Equations He gave us the...

okay, so If you look at the picture I used the first formula of the middle column where 0<x<a I made b = 19 and from the formula to calculate x I got 42.5 My final answer is 2.289 lbs

I thought so, since I used the maximum deflection one. I am having a little trouble understand the formulas for "deflection at anysection in terms of x" I think I am supposed to use y = Pbx / 6LEI ( L2-x2-b2 but I am not sure weather x is 19 and b is 57 or x is 57 and b is 19 How would I know this?

Homework Statement Hello, I did the question but would like for someone to clarify if its right. The question states " 19 inches from one end" but I used the center deflection formula and I am not sure if its right. It is question 2 of the picture Homework Equations equation is in the...