# Search results

1. ### Pressure in district heating network

Homework Statement Can somebody explain the figure attached? Homework Equations H=p/(rho*g)+(v^2/2g)+z The Attempt at a Solution Search on the internet and looking in fluid mechanics book. Not possible to get book to get a explaination.
2. ### Find voltage using nodal analysis

Both KCL-equations is wrong. With #2 is found the error in the equation around node 2. For node 1 were the 10 V battery not included in the equation. With the two change I get the correct answar - thanks! :)
3. ### Find voltage using nodal analysis

Homework Statement Assignment: Find V_2 using Nodal Analysis Homework Equations KCL U=R*I The Attempt at a Solution - Chosen reference node - Assigned node voltages - Applied KCL to each non-reference node - Solve system of equation - Checked equations for obvious errors See circuit drawing...
4. ### Direction of current when performing KCL

#2: The problem occurs when I user Ohm's law, it can end up in the wrong results if the direction I assumed is wrong. Any solution to that?
5. ### Direction of current when performing KCL

Who do I know the direction of the current flow, when I make nodal analysis?
6. ### Electric field symmetry

Thanks #3 - with the drawing i found the reason :)
7. ### Electric field symmetry

Homework Statement Problem statement: In the attached figure, two curved plastic rods, one of charge q and the other of charge q, form a circle of radius R 8.50 cm in an xy plane. The x axis passes through both of the connecting points, and the charge is distributed uniformly on both rods. If q...
8. ### Reduction of matrix equation

That right - thank you!
9. ### Reduction of matrix equation

Hello hope you can help me. Can anybody tell me what goes on from equation 3 to 4. especially how gets in?

Thanks :)
11. ### How is synchronous reactance for a cable defined?

How is synchronous reactance for a cable defined?