Recent content by Clipse

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    Electrodynamics : Oscillating Quadrupole

    do I just start off saying that the magnetic quadrupole moment is; p = (Coswt + Sinwt) z? Edit - made a silly mistake, the angle between them is pi and not pi/2, so it's not sine and cosine, it's just a linear combination of sines.
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    Electrodynamics : Oscillating Quadrupole

    Homework Statement Find E for a quadrupole, oscillating sinusoidally. The method suggested is to take two Hertzian dipoles, a distance 'a' apart, and find the superposition of the two. They both have an equal dipole moment, and angular velocity, but have a phase difference of pi between them...
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    Quantum Mechanics Complex Wave Question

    Homework Statement Consider the complex wave of amplitude; Psi(x,y,t) = exp[i(kxCosA + kySinA - wt)] Calculate the wavelength, phase velocity v, and direction of motion of this wave. Homework Equations Phase vel = wave length/ period or w/k The Attempt at a Solution My...
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    How Do You Determine Capacitance and Resistance in a Series RC Circuit?

    Ok, so I guess I am making progress anyway. The resistor will not affect phase at all, so the impedance of that is just R... The capacitor shifts phase by +pi/2... The impedance being 1/wC, and w= 2pi.f... I can use the multimeter to find the ac frequencies and voltages in the circuit (im not...
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    Engineering Experimenting with RC Combinations: Finding C & R Values

    This is an experiment Ill have to write up later, unfortunately I was out for 2 weeks of lectures due to illness. This is the experiment; Find the values of capacitance C and resistance R in a series combination, given he following apparatus; 1. the unknown RC combination (both in the same...
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    How Do You Determine Capacitance and Resistance in a Series RC Circuit?

    Homework Statement This is an experiment Ill have to write up later, unfortunately I was out for 2 weeks of lectures due to illness. This is the experiment; Find the values of capacitance C and resistance R in a series combination, given he following apparatus; 1. the unknown RC...
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    Solving a Ladder Problem: Finding Max Tension in a Rope

    Found my mistake, easy enough in the end.
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    Solving a Ladder Problem: Finding Max Tension in a Rope

    Ok, I am getting that T = R (normal with vertical wall) as there are no other forces in that direction. But that seems a bit simple no? Is the maximum tension in the string, the tension just before it breaks yes? So the tension when the the ladder is about to slip? This is what happens when you...
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    Solving a Ladder Problem: Finding Max Tension in a Rope

    Homework Statement A uniform ladder of weight WL and length L has its top against a vertical wall with friction coefficient μW and its foot on a smooth horizontal floor. A rope is attached to the foot of the ladder and secured to the base of the wall, with the ladder making an angle α...
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    Projectile Motion and linear motion problem

    Ya, I can see you need to find an equation for u, because that's the unknown that isn't in the answer. D is in the i plane, so do I find equations for when Sj= -H, and Si=D?
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    Projectile Motion and linear motion problem

    A projectile is launched at an angle α from the edge of a cliff of height H above sea level. If it falls into the sea a distance D from the base of the cliff, prove that its maximum height above sea level is H + [(Dtan α)^2]/4(H + Dtan α) Newtons equations of linear motion in the i/j...