# Search results for query: *

1. ### Programs Chemistry major looking for a way out.

Excuse the tangent, Which University do you attend, if I may ask? As I am also Australian, and have a friend who had pretty much the same crisis.
2. ### Complex Numbers: Equation involving the argument operator.

Cool beans, Is there a simple way to solve these though? A shortcut method? Wait, I found it... It's the line created from the points z1= -1-2i and z2 = 2+3i Gradient = \frac{3 - (-2)}{2 - (-1)} = \frac{5}{3} y = \frac{5}{3}x + b (-2) = \frac{5}{3}(-1) + b -6 = -5 + 3b -1 = 3b b =...
3. ### Complex Numbers: Equation involving the argument operator.

Homework Statement Question: Homework Equations Any relevant to complex numbers. The Attempt at a Solution Given, Arg(\frac{z}{w})= Arg(z)-Arg(w) z=x+yi z1 = -1-2i z2 = 2+3i Arg(z-z1)=Arg(z2-z1) LHS: Arg(x+yi+1+2i) Arg((x+1) + i(y+2)) tan(\theta)=\frac{y+2}{x+1}...
4. ### Wave paddle application Integration problem

What do the values 'p', 'g' and 'w' represent? If they are just constants, then remove them from the integrand. Eg.
5. ### Work done on a block

If you lift an object, you are giving it gravitational potential energy. So, to put it at the top of that incline, it will have gained potential energy. When it is released, it is losing potential energy, but gaining gravitational kinetic energy. KE = PE ================== When...
6. ### 3dimensional wave propogation.

Actually, that would be interesting.. Thank you for the assistance though. ^_^
7. ### 3dimensional wave propogation.

Essentially, the function for this: There isn't really a context, I'm not currently studying anything relating to this, it just interests me to see the behaviour of waves. I seem to have found it, by looking for an example image. z = sinx(√(x2+y2))
8. ### 3dimensional wave propogation.

I thought the maths area would be the best place to ask.. What kind of function would represent a 3 dimensional sine wave? A sine wave, where the z-axis lays on the circumference of a circle.
9. ### Resonance in a Wineglass

The length will affect it more than anything; the standing wave that occupies it is determined in large by the length, as this affects the number of nodes that can form.. f=\frac{nv}{4L} n = harmonic [where you can only have odd harmonics [1, 3, 5, etc].] L = length. v = velocity of the wave.
10. ### Momentum Theory question Gr.12

(ms×vs)+(mb×vb) = (ms+mb)v^2 Where: ms = Mass of student vs = Velocity of student mb = Mass of bag vb = Velocity of bag In writing; The sum of the initial momentum (p=mv) on both objects is equal to the final momentum, where the masses are combined. If you have objects moving on angles, you...

In which way? I could make V= 55L2H {Area of the base × height.} I haven't tried using my premise that the most efficient {volume:surface area} is a cube, with the implication of V= L3 I'll give that a shot. Otherwise, I am truly stumped.

Maxima word problem -- Not sure about my answer. This was in an assignment handed out after our introduction to extrema's. A builder wants to build a small building consisting of 4 walls and a roof (all rectangular). The cost of the bricks for the walls will be \$25/square metre, while the roof...
13. ### Trig identity proof.

Prove: \frac{CosθSinθ}{1 + Tanθ} = Cos2θ =========================== I multiply out the denominator to get: CosθSinθ = Cos2θ + CosθSinθ I cannot seem to prove it. Starting to think it's a trick question.. :/
14. ### Saw this question online.

The amount of water in a tank doubles every minute. If the tank was full at the 1 hour mark, when was the tank half full? ============================= It's not homework, I'm just trying to get the actual (reasoned) answer.. ============================= Here is the answer I argued (though...
15. ### Static friction on a slope.

A block is sliding down a 30° incline at 1.2ms^-2 Find the coefficient of static friction. [g=9.8ms^2] I am stumped.. Some relevant equations: Fr = μ(Fn) Fn = mg Ultimately I got μ=0.5 ---> This was through mashing and playing with some trig.
16. ### LaTeX LaTeX - How do I acquire it?

These were great! Thank you very much. :)
17. ### LaTeX LaTeX - How do I acquire it?

LaTeX -- How do I acquire it? To whom is reading, Can you please either: (a) - Direct me to where a tutorial or explanation is located on this forum (If there are any). (b) - Direct me to where I can find a tutorial or explanation on how to acquire and install it...
18. ### Springs: Speed when released & distance traveled.

This gave me the same result [5cm, 0.05m] as one of the ways I tried it originally: [v^2 = u^2 + 2ad] Where: a = F/m = 4N / 1.6kg = 2.5ms^-2 v = 0.5ms^-1 u = 0ms^-1 (0.5)^2 = (0) + 2 (2.5) d 0.25 = 5d d = 0.25/5 d = 0.05m [5cm] -------------------------------------------------...
19. ### Springs: Speed when released & distance traveled.

-------------------------------- Question: -------------------------------- A 1.6 kg block is pushed into a spring with spring constant of 1.0 x 10^3 N/m. The spring is compressed a distance of 2.0 cm [0.02m], and the block is released from rest in the horizontal direction. (a) Calculate...
20. ### Gravity Simulator

G'day, i am new here, and have quite a profound lust for maths/physics. This simulator is brilliant, though i am not sure how accurate the simulation represents gravitational equations. http://nowykurier.com/toys/gravity/gravity.html Give it a go. :biggrin: