Recent content by Yapper

A little typo correction, (c) Consider now the limit where x≫l, so that (1±(l/2x))^−2≃1∓l/x Edit: I figured it out please ignore this post...

Electric Dipole as x >> l, how do I simplify this correctly? Homework Statement ELECTRIC DIPOLE : 15.0 POINTS A charge −Q is located at x=−l/2 and a charge +Q is located at x=l/2. Thus the separation between the two charges is l. The total electric field on the x-axis can be written...

Thanks ill give it a try

Fy = Fna + Fnb - Fg = 0 Fna + Fnb = Fg Fx = F - fa - fb = F -.1(Fg) Fx = 882.4 N ax = 7.35333 m/s^s T = 1200 + .5Fna - .5Fnb + (fa x r) + (fb x r) fa = .1Fna fb = .1Fnb [PLAIN]http://img198.imageshack.us/img198/3497/unled3t.png

Homework Statement Q2: IF mA=2kg, mB=7kg, and mC=5kg. Starting from rest, if a torque of 5Nm is given at t=0 to pulley A about point A for 3 seconds. Determine the angular velocity of the 3 pulleys at t=3s. [PLAIN]http://img98.imageshack.us/img98/8214/unled2tw.png Homework Equations...

I have a free body diagram. But i don't understand how to take that and figure out the linear acceleration and then find out the forces acting on A and B. I mean its not as simple as 1000 - .1(120kg)(9.8) = 120kg * a, a =7.35 m/s? I need to know how to approach this problem after I have the...

Urgent! Torque to linear acceleration. Please Help! Homework Statement Q1: A horizontal force F=1000N is applied on a 120kg fridge as shown below. If friction is present, what is the magnitude of the fridge linear acceleration, and the magnitude of the normal forces acting at A and B? (hint...

why would I divide gravity by mass? y is the displacement in the y direction from the point that the object began following

I changed my frame of reference around and it worked out better using dv/dt + 4v = 9.8. I also got y(t) = 2.45t + 6.125e^-4t is that right?

I've taken Calc I and II and I am taking Calc III right now and I never remember having to solve these. So far based on what I just been reading i get v(t) = 2.45 - 2.45e^4t with the initial condition being V(0) = 0. is that right? and if so why is the graph backwards. it seems like it should be...

Homework Statement An object of 0.5kg is dropped from rest at an altitude of h=500 meters. It falls while being subjected to a drag force, defined as: fD = 2v . Derive explicitly: v(t), and y(t) and plot v(t) given the initial conditions; use: t between 0 and 0.4 seconds, and v between 0...

wow do you guys read, this is a math 100 course at a ****ty university, you automatically assume that the teacher is perfect, and there is no textbook for the 2nd time, but thanks for the topics of research dick i have a starting point

thanks, and he says his teacher didn't explain it to him at all so that's why I'm doing this for him. If you could clarify, what does mod n mean? And how would he go about factoring 5 + i over Z[i]? would it just be 5?

Homework Statement Can someone explain the notation of the integer ring(Z)? My friend's in Math 100 and has questions on Z. I have never heard of ring's before and I'm at a loss to help him. From what I've gathered Z is a set of all integers. They ask for the invertible elements in different...

K, thanks for all the help. Ill make sure to point out the problem to my prof.