Recent content by Nivlac2425

So I'm not sure why I'm not understanding this yet, but I think I need some help.. I am still stuck on finding the static pressure p3 at point 3. I know that between points 2 and 3, we can assume things are isentropic. I also found the stagnation pressure at point 3, pt3, by using an...

Thanks for the resources! I'll go through that and see what I can learn before I come back for more questions :approve:

Homework Statement Air, supplied by a reservoir at 450 kPa, flows through a converging-diverging nozzle whose throat area is 12 cm^2. A normal shock stands where A1 = 20 cm^2. (a) Compute the pressure, p2, just downstream of this shock. Still farther downstream, where A3 = 30 cm^2, estimate (b)...

At t=0, Etot(0)= Ao2 [(L+CR2)/2LC] ? I thought this would be true since exp(-2Rt/L) is the exponential decay term and the "coefficient" would be the initial value. Setting t=0 also makes the exp term become 1. Assuming this is true, I could set Etot= Eo/2 where Eo is the intial energy, and...

Thanks for the reply, I believe it was ω=(iR±iR)/2L, (after using R>>(4L)/C ω=2iR/2L ω=iR/L Correct me if I'm wrong with this Thanks!

Homework Statement Consider a simple RLC circuit. If R >> (4L)/C , compute approximately how long it takes for the circuit to lose half of the initial energy stored in the system. (There is no circuit drawing given; the problem assumes a general RLC circuit) Homework Equations The...

So if I resolve the tensions into their components, and realize that the sum of forces in x and y are both equal to zero, I get the following relations: sin(α) + sin(β) = 1 cos(α)=cos(β) This tells me that the angles must be equal, and that α = β = 30° And since: tan(α) = (h+y)/(b-x)...

I believe the tensions are equal and they are all equal to W

Homework Statement The system is in equilibrium. What are the coordinates of point A? (see attached image) Homework Equations ƩF_y = 0 ƩF_x = 0 The Attempt at a Solution The sum of forces in the x and y directions is zero since the system is in equilibrium. At point A, I also know...

The charge on the left is positive, and the charge on the right is negative. We know this because the convention for my class is that electric fields come outward from positive charges. Ok, so since there is an attractive force, then at the equilibrium shown, would it just be ƩF= F_{E} -...

Homework Statement Two very large horizontal sheets are 4.25 cm apart and carry equal but opposite uniform surface charge densities of magnitude δ. You want to use these sheets to hold stationary in the region between them an oil droplet of mass 374 micrograms that carries an excess of five...

Homework Statement Two tiny spheres of mass m = 7.90 mg carry charges of equal magnitude, 72.0 nC, but opposite sign. They are tied to the same ceiling hook by light strings of length 0.530 m. When a horizontal uniform electric field E that is directed to the left is turned on, the spheres hang...

Thanks for pointing out what I needed! I've figured it out, and I really appreciate the help :biggrin:

Homework Statement A 2.10 kg bucket containing 13.0 kg of water is hanging from a vertical ideal spring of force constant 130 N/m and oscillating up and down with an amplitude of 3.00 cm. Suddenly the bucket springs a leak in the bottom such that water drops out at a steady rate of 2.00 g/s...

I solved it! Here's the solution for part (b): We know that the ball-tray-spring system is released under the equilibrium at point A, and we also know that the ball leaves the tray at some point between the equilibrium and the top of the oscillation (this is because as soon as the...