Recent content by ChrisBaker8

...I didn't notice that part, that simplifies things. Thanks.

Homework Statement A thermally insulated system consists of 1 mole of a diatomic ideal gas at 100K and 2 moles of a solid at 200K that are separated by a rigid insulating wall. Find the equilibrium temperature of the system after the insulating wall is removed, assuming the solid obeys the...

I'm not sure if this is the correct section to be posting in. I'm writing a summary of the mandelbrot set and I'm not sure I understand how the points are calculated. I've got the equation: z = z^{2} + c This means each value is squared, and then a constant value c is added, to get a...

wait this makes the body a Hot Jupiter, doesn't it?

right, I used K3L to work out r, which was 7.078 x 10^9 m therefore mass of companion = 6.154 x 10^26 kg this makes it what...a big planet? Jupiter is x10^27, so I'll assume so

period = sqrt ( 4 pi^2 r^3 / GM ) 304128 s = \sqrt{(4\pi^{2}r^{3})/(6.673.10^{-11}.M)} Is this using M as the given star mass and r as the radius of the orbit of its companion?

I... assume the star is orbiting around an unmoving (within the system) object of infinite mass? ?

I'm not sure what that means. I still have no way of working out the mass of the companion. It could be the same size/mass of the star and an equal radius away on the other side, or it could be a much smaller planter and further away, like in the animations. How can I tell which is the case if...

Homework Statement The solar-like star HD209458 with a mass of 1.14 solar masses exhibits radial velocity variations with a period of 3.52 days and an amplitude of 84m/s. What is the mass of its companion and what type of object is it? Homework Equations M/m = r/R = v/V [M,R,V = star, m,r,v...

okay, thanks

okay, I think I get the argument now for the modulus, I added \sqrt{3} ^{2} and i^{2} to get 3 - 1, then square rooted to get \sqrt{2} is that wrong?

Homework Statement Find the modulus and the principal value of the argument for the complex number \sqrt{3} - i The Attempt at a Solution I know the modulus is just 'square both, add, and square root of sum', so r = \sqrt{2}, but I don't know how to find the second part. I know vaguely...

I'm doing an experiment to measure the Stefan Boltzmann constant with two small copper discs, one normal copper and one with a painted black surface. Both are covered with a a heated container and the termperature of the discs electronically measured. The black disc's temperature rises at a...

But the question says one end is hinged to the horizontal. Doesn't that mean you count them as one object? (ie no normal force or friction)

Homework Statement dy/dx = xy/(x^{2}+3y^{2}) The Attempt at a Solution I just don't know where to start. Can someone please point me in the right direction?