Recent content by Electro

Thanks Siddharth, but if we draw a picture of the two media, geometrically we can conclude that E1t = E2t where E1t=E1-E1n and the same with E2t (I guess you get the picture). I don't see how this would help. Moreover we are dealing with 3-D ( I guess I might have understood it if it was 2-D)...

Greetings everyone: I'm trying to solve a problem which requires finding the electric field. I've been pondering on this problem for a while but still no results. The book doesn't give any hints or clues on how to tackle this kind of problems so I would really appreciate some of your...

Hello everyone, I found a random question regarding finding the parametric equations for a tangent line to a space curve and I'm striving to solve it, but no results. I consulted the book but there isn't anything similar. Find the parametric equations for the tangent line to the space curve...

If we get the Unit Tangent Vectors then they are in terms of t. What do we substitute for t to get the value? The point we have is (3,-2,25) ->(x,y,z).

Vector Calculus Greetings everyone, I have a problem: "Consider the curves r1(t)=(t, 1-t, 16+t^2) and r2(t)=(8-s,s-7, s^2) a) At what point do they meet? b) Find their angle of intersection The first part is easy, but I'm encountering some problems with b). To find the angle we need...

Hello to all, I have a physics problem regarding reflection of light. A solid glass cube, of edge 10 mm and n = 1.5 has a small spot at its center. a) What parts of each cube face must be covered to prevent the spot from being seen, no matter what the direction of viewing? b) What fraction...

Hello everyone, I was solving an integral, but I am not quite sure for the final answer. If someone has the time, just take a look. Integral from 0 to pi/2 of (x*[sin x]^2)dx I used by parts integration; using u=(sinx)^2 du=2 sinx cosx...

Hi there, I have a simple function and I want to plot it in MATLAB but i get an error. Maybe someone can help. The function is of the type 1/(X^3 + X^2 +1) I can plot a polynomial but I have no idea about the function above. Thnx

For E2 i.e the middle one, I used just 1.01 cm (actually 0.0101 m) and for E3 4cm + 1.01 cm, which is 0.0501 m.

Hello guys, I have a question which I think I solved it right but I don't understand why the final answer is wrong. Here's the problem: Consider three charges as shown. k is 8.98755 * 10^9 N m^2/c^2. What is the electric field at a point 1.01 cm to the left of the middle charge? Ans. in N/C...

Hello, I am finishing my first semester as an electrical engineer. Thus, we have to do a final project. The problem is that I didn't have to much time in the lab to finish it up, so it is a little bit difficult to solve it theoretically. If anyone can help, I would be grateful. The project...

Hello, I am finishing my first semester as an electrical engineer. Thus, we have to do a final project. The problem is that I didn't have to much time in the lab to finish it up, so it is a little bit difficult to solve it theoretically. If anyone can help, I would be grateful. The project...

Can anyone help?

Hello, I have a problem dealing with torques and acceleration. I am sure I solved it right but when submitting the answers, I get the response "Incorrect" :cry: The problem: A wheel of radius 2 m, mass 53 kg, and moment of inertia (3/4) (53 kg) (2m)^2 about the center of mass is mounted...

Thanks Parth Dave, In fact the answer was positive. But the second Part is weird. As I told, I applied: mgh = 0.5mv^2 and hence I found v. BUt the answer was wrong. What might be the problem?