Recent content by stryker123

first thing to do is draw a free body diagram. Make sure to include ALL the forces. this mgsin, mgcos, Normal force, and gravity. To help you answer your question, know the difference between mgsin and mgcos.

for those of you that are familiar with Young's Single slit experiment, I am having trouble determining how far apart the minima are. The problem is as follows: one shines a laser with wavelength lambda=650nm through a single slit of width a=.04mm onto a screen 10m away. How far apart are the...

so, I got the equation to equal E = (KA^2)/2 yet I do not see where the 'Delta' l comes in. Is this something that I can just add on?

Homework Statement A mass 'm' is attached to the free end of a spring (unstretched = l) of spring constant 'k' and suspended vertically from ceiling. The spring stretches by Δl under the load andd comes to equilibrium position. The mass is pushed up vertically by "A" from its equilibrium...

Possible Helmholtz equation? Homework Statement Heres my problem: In recent studies of migrating birds using the Earth's magnetic field for navigation, birds have been fitted with coils as "caps" and "collars". a. If the identical coils have radii of 1.2cm and are 2.2cm apart, with 50...

Homework Statement A packed bundle of 100 long, straight, insulated wires forms a cylinder of radius R=.5cm a. if each wire carries 2A, what are the magnitude and direction of the magnetic force per unit length acting on a wire located .2cm from the center of the bundle? Homework...

Homework Statement A coil of 15 turns and radius 10cm surrounds a long solenoid of radius 2cm and 1x10^3 turns/m. The current in the solenoid changes as I = (5A)sin(120t). Find the induced emf in the 15-turn coil as a function of time. Homework Equations emf = -Nd[flux]/dt d[flux]...

yes, I understand most of it now. Although, I am having trouble with finding the second derivative. I'm not sure if I should use the product rule or quotient rule, but I'm sure I can figure it out Thank you to everyone who responded to this thread.

if I'm trying to get the equation to look like http://s199.photobucket.com/albums/aa160/stryker213/?action=view&current=First.jpg then how can I treat the uR^2... as a constant? If i treat it as a constant, wouldn't that turn into zero?

Homework Statement How do I take the first and second derivatives of the helmholtz equation? The equation is as follows: Bx= ((uR^2NI)/2) * ( [1/((x+a)^2+R^2)^(3/2) ] + [1/((x+a)^2+R^2)^(3/2) ] ) heres what I have to prove First Derivative...