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...
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...
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...