Recent content by cowmoo32

Right again. It was a long day yesterday. Thanks!

Does this work?

I could kick myself. For some reason I've had it in my head that the voltage drop would be across the two Vin leads and the two Vout leads, but you're right. I should be measuring voltage across Vin to Vout. edit: Seeing that makes things even harder. Now I have no idea how to reduce it.

Homework Statement Find Vout over a range of frequencies Homework Equations V = IZ The Attempt at a Solution I'm trying to equate Vin to Vout using equivalent impedences. I have some python code to handle the numbers but want to be sure my algebra and circuit reudction are correct...

This is for a computational physics class, but isn't a homework question, per se. My friend and I have two different sets of code trying to achieve the same thing and we're getting vastly different answers, orders of magnitude apart. We haven't covered this sort of problem in our intro E&M...

[1,0] [0,1] [n,0] [0,n]... one value has to be zero for x1*x2=0 I had the answers backwards. B is a subspace and A is not.

Homework Statement Determine whether the following sets form subspaces of R^{2} A){(x_{1},x_{2})^{T} | x_{1}x_{2}=0} B){(x_{1},x_{2})^{T} | x_{1}=3x_{2}} Homework Equations checks: Does zero vector exist? Is the space closed under addition? Is the space closed under scalar multiplication?The...

I emailed my professor and the solution is wrong. You cannot say F=mg=kx because the system is not in equilibrium. I was correct in saying that at the point of maximum compression the energy of the system is mgh=1/2kx2 where h is the distance the mass fell + the compression.

The sums should be the same, correct? When the mass has fallen the initial h + deflection, all of the energy in the system is now PEspring, at least that makes sense in my head. Why, then, do I get an incorrect value when I set mg(h + delta) = 1/2kx2? Someone in my class clarified why F=mg=kx...

I'm reviewing some problems from a few months ago and I remember getting hung on this before. A mass is dropped from a height h above a spring. I am given the deflection of the spring when the mass stops moving momentarily. The spring constant in the solution is given by mg/x. I understand how...

After looking through some more examples, the answer will have the form x1(t)=-C1sin(3t)*a + C1cos(3t)*b x2(t)=C2sin(3t)*a + C2cos(3t)*b where v=a+ib v = [-1-i,1] = [-1,1]+i[-1,0] a=[-1,1] b=[-1,0] I get: C1sin(3t) -C2cos(3t) But it's telling me that's incorrect.

Whoops, I wrote that wrong. All of the problems I have worked so far have had the form:x1(t)=-C1sin(3t) + C1cos(3t) x2(t)=C2sin(3t) + C2cos(3t)

Homework Statement The Attempt at a Solution I know the general form should be x1(t)=-C1sin(3t) + C2cos(3t) x2(t)=C1sin(3t) + C2cos(3t) but there's something going on with v that I'm not getting. I'm not sure how to incorporate it without knowing A

Thanks!

Homework Statement A 7-kg box is being lifted by means of a light rope that is threaded through a single, light, frictionless pulley that is attached to the ceiling. If the box is lifted, at constant acceleration, from rest on the floor to a height of 1.5 m above the floor in 0.42 s, what...