Recent content by baltimorebest

Hmm I tried to do that, but I couldn't really find any detailed explanation (in terms of Optics) of how they worked. I just found some results about aircrafts that used the technology.

Using Optics To Make An Aircraft "Invisible" Homework Statement Does it seem possible (or practical) to make airplanes invisible to microwave radar by applying some kind of anti-reflection coating? Homework Equations The Attempt at a Solution I'm not sure what to say for this. I...

Homework Statement I attached my problem. Homework Equations The Attempt at a Solution I am attempting to use Mathcad to solve this problem using a computer. I have the problem graphed, but I am unsure what it means by " do not plot the initial transient." For part b, I have...

Ahh ok that's what I meant. Thanks. Are the rest of my thoughts correct?

Coulomb per second I believe. So would it just be that number over 10^-6?

Thanks for responding. Is my thinking for part A correct? And for part B, I get a value of .05 A but how do I convert that to the needed result? Is .05 A in terms of seconds, and I have to divide by 10^-6?

Homework Statement I have attached the question as a photo. It contains two parts. Homework Equations The Attempt at a Solution For part A, is it simply Q=CV where C is given and Q is the elementary charge times 10^6? For B, I am not quite sure where to begin. Any...

I see. Thank you very much for all of your help. Same to Mindscrape.

Ah ok so Vout/Vin = 0.079577. So it's by a factor of 0.079577. So for part c, do I just plug that number into dB=20log(Vout/Vin) and get -21.98. So that means it decreases by 21.98 db?

But that impedance uses the value of 'R' which I don't have. I just have 'RC'

Oh I think I was misunderstanding the question. I think got it now. My only remaining question for part b is that how do I calculate the impedance? I don't know if my resistor and capacitor are in series or parallel? Do I assume series?

I tried to read it, and I have a slightly better idea. So perhaps the cutoff frequency divided by the original frequency?

Thanks for responding. I see what you are saying, but doesn't that cutoff frequency determine where the remaining amount is 70% of the original? Does that help for part b?

Homework Statement Consider a low-pass filter with RC=2x10-4 s. a) Calculate the -3db frequency for the filter. b) By what factor will the amplitude of a 10 kHz input sine wave be reduced by the filter? c) By how many db will the power be reduced by the filter at 10 kHz...

I tried to work on this all afternoon and here is what I got for everything except the graphing. I have no idea if it's correct, but I really hope it's close.