Homework Statement
Determine the y_particular solution
Homework Equations
The Attempt at a Solution
I've tried this for hours but still don't get the correct value.
This is what I get:
The question is the same as the one I found from...
Homework Statement
Determine the norton equivalent Circuit
Homework Equations
Norton theorem
The Attempt at a Solution
First, I transform 5A and 10 ohm (in parallel) into 50 V and 10 ohm in series
So, there are three meshes,
for Mesh 1 (I assume the current is clockwise)
##30 i_1 - 10...
Homework Statement
By Gauss' law, how is it able to obtain ## \nabla \cdot \vec{E} = \frac{\rho}{\epsilon_0} ## ?
By Coulomb's law, ##\vec{E} = \frac{1}{4\pi\epsilon_0} \frac{q}{r^2} \hat{r}##
I calculate the divergence of ##\frac{1}{r^2} \hat{r}## and get the result is zero
That means the...
Homework Statement
Determine the equivalent resistance and the total current!Homework Equations
Ohm's Law
Wye-Delta Transformation
The Attempt at a Solution
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I do the series on 10 ohm, 5 ohm, 3 ohm resistors, because it is node e-g,g-h,h-f, so it becomes 18 ohms (e-f). Then I do the...
What is actually the unit normal vector of a surface?
Is it this?
Or this one?
I see that those are opposite in direction. But, I want the correct one, which means that it should point outward.
So, which one is correct?
Homework Statement
Plane A flies with speed 0.6c chasing plane B which speed is 0.4c . Both speed is measured by observer on Earth. Then, plane B fires a small rocket which rest mass is 10 kg towards plane A. Rocket speed is 0.2c relative to plane B where c equals the speed of light in vacuum...
So, does the formula still valid for d < lambda?
Why will there be no total cancellation? I mean, you mean the cancellation caused by the difraction? Or, what? Please explain it.
Thanks