Recent content by Patdon10

i'm having trouble following the math involved. Can someone set me straight? Vf^2 = V_0^2 + 2aD 73.3^2 - 80^2 = 2aD -1022.27 = 2(3-9.81sin(7)x_f -511.1355 = (3-9.81(sin7))x_f -511.1355 = (3-1.1955)x_f -511.1355 = 1.8044*x_f x_f = -283.26 feet. What am i missing?

Homework Statement simplify -x^3 - 3x^2 - 4x - 2 It is equal to -(x-1)(x^2 + 2x + 2) Not sure how to get that answer, nor how to start it.

Thanks for the help. I'll run with it.

Thanks. You're right. That changes the answer to 0.509 m/s Still seems a little low though.

I got an answer, but it seems rather low. I think I saw somewhere that Velocity = flowrate/area*density so I have 16/(pi*0.04 m^2)*(1000) The units work out to be m/s and I got 0.127 m/s That's some slow moving water! Does this work?

right. So I have 16 kg/s in the outlet pipe, but how do I find the velocity from that?

Are you saying the mass flow rate out has to be equal to 16 kg/sec?

Homework Statement Water (of density 1000 kg/m^3) flows into a cylindrical tank through two pipes at mass flow rates of 6 kg/sec and 10 kg/sec respectively, and leaves the tank via a circular outlet pipe of 20 cm diameter. If the water level in the tank is to remain constant, calculate the...

I'm not. But I feel like I don't care about that? All I need to figure out is the charge density to keep it from hitting the upper capacitor.

I don't know how to find the energy gained when it's moving through a potential difference. Maybe in a few weeks we'll go over that?

alright, so I need to set up a kinematics. You have to avoid the variable t, so you can use the equation: V_f^2 = v_i^2 + 2ad The final velocity will be 0 0 = vi^2 + 2ad vi^2/2a = d Since we only care about velocity and displacement in the y direction, the equation changes to d =...

Homework Statement 2. The attempt at a solution I have the solution, but it's pretty confusing so I want to see if anyone else can walk me through step by step. The first step is pretty clear...You have to find the acceleration that the proton will experience as it moves towards the...

It seems pretty confusing, but I'll try it out and see what happens.

Homework Statement The figure below shows a Helmholtz coil used to generate uniform magnetic fields. Suppose the Helmholtz coil consists of two sets of coaxial wire loops with 17 turns of radius R = 76.6 cm, which are separated by R, and each coil carries a current of 0.131 A flowing in the...

Homework Statement A square loop, with sides of length L, carries current i. Find the magnitude of the magnetic field from the loop at the center of the loop, as a function of i and L. (Use any variable or symbol stated above along with the following as necessary: μ0.) Homework Equations...