Recent content by Tekee

N3 is 1.2, if that helps. In this case, then, I would assume that the ray bounces off the N2/N3 border. Sorry for the confusion! You can see that I don't really have a grasp on the topic :blushing:

Only the top two layers are used in this problem. The ray is coming from layer 1 and reflecting off layer 2. I posted the indices in my first message.

Oops, it's attached now.

Homework Statement What is the maximum value of θ1 that would cause total internal reflection to occur? N1 = 1.3, n2 = 1.6 (picture attached) Homework Equations Critical angle = sin^-1(n1/n2) The Attempt at a Solution I figured the critical angle to be 54.3. That means that...

Homework Statement Given resistance of circuit 68 W, I(max) = .191 A, V(max) = 22.5, what is the average power of this circuit? Homework Equations P(avg) = I(avg)V(max) The Attempt at a Solution I took .191 and divided by sqrt(2) to get the rms current and multiplied by the max...

Homework Statement A single-turn rectangular wire loop of size 20 cm × 30 cm rotates at a uniform rate of ω = 50 rad/sec around the z-axis as shown. There is a uniform magnetic field B in the +y-direction. The loop has a total resistance of R = 36 Ω. If the induced rms current in the...

I made a mistake in transcribing the problem. The problem asks for the overall speed of the particle, but asks for the velocity of the xyz components. Nonetheless, I'm still confused at how to determine whether or not the component velocities are changing at all.

Homework Statement There is a magnetic field pointing upward (say along the y-axis) and a particle going 32-degrees above the x-axis (or 58-degrees to the magnetic field) The problem asks if the speed of the particle is increasing, decreasing or constant. It also asks if the x, y, and z...

Homework Statement Two identical positive charges of +Q are 1 m apart. What is the magnitude and direction of the electric field at point A, 0.25 m to the right of the left-hand charge? Homework Equations E = kQ/r^2 The Attempt at a Solution I summed up kQ+/(.25^2) and...

Homework Statement Problem: What single, equivalent resistor could replace all of the resistors in this circuit? Given R1 = 4, R2 = 5, R3 = 14, R4 = 9 Homework Equations In series, R1 + R2... = Req Parallel, 1/R1 + 1/R2... = 1/Req The Attempt at a Solution I have tried...

A company has 1000 widgets and will bbe able to sell all of them if the price is one dollar. The company will sell one less widget for each 10-cent increase in the price it charges. What price will maximize revenues, where revenue is the selling price times the quantity sold...

I'm in AP Physics right now (currently studying energy - not sure what category that falls into. Mechanics?) and I've found my textbook to be less helpful than what I thought it would be. So I'm considering investing in a new one that I could get off ebay/amazon, and the price really doesn't...

Homework Statement r = 2 r^2 = 9sin(2theta) Find the 4 points of intersection Homework Equations The Attempt at a Solution Since r = 2, 4 = 9sin(2theta)... 4/9 = sin(2theta) Taking the inverse of 4/9 only gives me one answer on the calculator (obviously), and I do not know...

Right...so f(x+h) is: (x+h)^2 - 2x + 2h I foiled out everything, and I think I'm good to go :) Thanks for the help!

Would it simply be x^2 - 2x + h? (That may be where the problem is...I'm not too sure on that) If so, I just did: x^2 - 2x + h - x^2 + 2x --> h ---numerator h --- denominator h/h = 1? EDIT - I see what you did...(rocophysics) Thanks! I'll try it out.