Recent content by Thefox14

Wow...just wow. It wanted the answer of 1950 picometers haha Thanks for the suggestion man!

Thats a great way of getting a really quick approximation to test your final answer for these things! Sadly I'm still not getting the right answer :( I tried values from 1000-2500 (increments of 100), and still couldn't find what it was so I could "backtrack" and find what I was doing wrong.

Homework Statement 1)The graph below represents the ground state wave function of an electron in a finite square well potential of width L. The potential is zero at x = 0. The wave function of the electron within the well is of the form A cos( 2πx / λ ) where A is a normalization...

Oh duh! haha thanks I got it now. For anyone else who comes across this, though, here is what I did: I_{f} = I(\frac{sin(N\theta/2)}{sin(\theta/2)})^{2} So intensity will go to zero if we get the top part in the fraction to be 0. Then we know sin is zero in multiples of pi. So after...

Homework Statement A 4-slit interference pattern is created by 4 slits spaced 2μm apart. At what approximate angle θ does the intensity go to zero the first time, if the incoming light has a wavelength of 450 nm? θ1st min = Homework Equations d*sinθ = m\lambda The Attempt at a...

Alright I found the formula for dampened oscillations. In case someone wants to know it's: w' = w^2 - b^2 where b = R/(2L) and w = 1/sqrt[LC]

Homework Statement a. What is the frequency of the current oscillation of the circuit as it is shown? b. What is the frequency of the oscillations in electrical potential difference, V, between the two ends of the resistor in the circuit as it is shown? c. What is the charge on the...

Ah, Thats right its the chain rule! I kept leaving out the q term heh. Thanks I get the correct answer now.

Homework Statement A 2.9 MΩ and a 2.8 μF capacitor are connected in series with an ideal battery with an EMF of 3 V. At 2 seconds after the circuit is initially connected to the battery: What is the rate at which energy is being stored on the capacitor? Homework Equations dq/dt = v/r *...

Homework Statement The transverse displacement of a harmonic wave on a stretched rope is y = 0.06 cos(2.1 t - 3.8 x), where x and y are in meters and t is in seconds. A 5 meter length of this rope has a mass of 1.5 kg...

Never mind, just figured it out. If anyone is curious how: 1. From the period you can find the length of the pendulum 2. from the angle you can find how high up the pendulum has gone 3. conservation of energy (all potential -> all kinetic) 4. use v2/r = acen

Homework Statement Let's go back to the original pendulum of mass 20 kg with a period of 1.5 sec, displaced an angle of 13 degrees from the vertical. What would its acceleration be in the vertical (y) direction as it reachs the lowest point on its swing...

Thanks!

Homework Statement The direction of the angular momentum vector of an object about a particular point is A. perpendicular to a line connecting the object to the point.. B. parallel to a line connecting the object to the point. C. perpendicular to the linear velocity of the object. D. parallel...

Ah, that makes sense now. Thanks for the explanation!