Recent content by rickyw2777

My bad, it should be keep the frequency lower than 4500 Hz and Atenuates the frequency above 4500 Hz. The 60 Hz should be reduced by a RLC bandpass filter. A, B, C D are just the matrix representation of the set of differential equations. you can see my note here I guess just generally...

Hi, I am trying to build a RLC low pass filter that atenuates the frequency below 4500 Hz. However, I have encountered some problem when choosing the correct R to work with. Here is the Circuit Here is the original sound. Here is my code in Matlab function Vout = myFilterCircuit(Vin,h) n_V...

I understand now. Thank you!

I tried to use the formula of I(t), but I can not determine the R to substitute. Also, it is the circuit of both parallel and series, so I am not sure how the current goes.

Va-Vb

So the potential difference from A to B is negative right?

My physics teacher discussed this in my university intro physics class. So I know that moving along the electric field lines would mean decreasing in electric potential. And since the electric filed lines are pointing outward from the surface, and the B point on the surface is of zero electric...

Thank you. I have just asked the instructor and he said that that is all he needs. So thank you all who replied to this.

I have tried to solve this problem by using the Columb's Law. Basically, I draw the graph and attempted to find the point where sum of the forces are zero. Here is what I have. Is there anything wrong in my working? Why can't I solve d in terms of a?

I believe that there will not be a induced current because the magnetic field does not pass through the coil.

Some of the power performance parameters of an electric car are shown in Table 7-1. If the car starts from rest and moves along a straight road with a uniform acceleration of a = 1.5 m/s2, when the speed reaches v1 = 72 km/h, the motor works at the rated power, and the power of the motor remains...