# Search results

1. ### Simple Mesh Analysis

Thanks for your replies, mesh analysis is mandated for this problem. If i annotate my solution such that the 1 ohm resistor has the differences of the two currents crossing it rather then just the single current, is the remainder of my analysis and procedure accurate?
2. ### Simple Mesh Analysis

Homework Statement Please see the attached file for the problem statement. I am attempting to find the current across the .25 Ohm resistor. Homework Equations Using kirchoffs voltage law I write the following equations: (1 Ohm)(2 amps) + (.25 Ohm)(2 - M1) = 0 The Attempt at a...
3. ### Fluid Mechanics: Rain fall on a roof

Homework Statement The exact problem can be seen in the attached jpeg, and is summarized without figures here: Homework Equations Volumetric flow rate: Q = A*V Continuity equation: (d/dt)*(Integral Of:density*dVolume) + (Integral Of:density*velocity*dA) Velocity of rain fall down the...
4. ### RLC Circuits - Resonant Frequency, Power

Thanks for your reply, i'd like some verification by someone on my physics if anyone can help.
5. ### RLC Circuits - Resonant Frequency, Power

Homework Statement An AC circuit consists of an alternative emf of 1 V connected to a resistor of 500 Ohms, an inductance of 0.4 mH, and two capacitors connected in parallel of 50 pF each, We want to find the resonance frequency of this circuit, the maximum power dissipated by the...
6. ### Multivariable Limits

It doesnt exist? So when i do that method if I find i have thetas in my answer then the limit does not exist?
7. ### Multivariable Limits

Homework Statement Find the limit of: (x^2+y^2+2xy)/(x^2+y^2) Homework Equations x = r*cos(theta) y= r*sin(theta) The Attempt at a Solution So what I did was change to polar coordinates. Then it simplifies to: (r^2 + 2r^2cos(theta)sin(theta) )/r^2 Factoring out an r^2 from everything you...
8. ### Space Elevator: Physics Challenge

So by what your saying: Tension (directed downwards) + Gravity (also directed downwards) = Centripetal Force Therefore: 1. Centripetal Force = Tension + Gravity 2. (mass sattelite)(v^2)/(radius sattelite) = Tension + (G)(Mass sattelite)(Mass earth)/((radius sattelite)^2) 3. Sub in v =...
9. ### Space Elevator: Physics Challenge

What about this for C: (mass sat)(w^2)(R sat) = (mass sat)(w^2)(R sat - R earth) + [ (G)(Mass Earth)(Mass Sat)/(R sat)^2 ] What this expression says is that the centripetal force of the sattelite must be equal to the tension in the rope plus the force of gravity on the sattelite. The radius...
10. ### Space Elevator: Physics Challenge

Can anyone shed some light on C?
11. ### Space Elevator: Physics Challenge

I have the same challenge problem in my physics class. Your choice for the anchor point is correct, but for the wrong reason. You place it at the equator not because of the value of g, but because if you place it anywhere else on the planet it wouldnt be in the same place at all times. Its...
12. ### Eliptical Orbit and Eccentricity

1. Problem statement The space shuttle is in circular orbit of radius R around the earth. The pilot triggers a brief burn that imparts a forward impulse 'p' to the shuttle. After the burn, the shuttle is in an elliptical orbit which passes back through the point where the burn took place once...