Recent content by annalise17

Thanks :) I haven't written relevant equations at the start before so I might just do that now to neaten things up :)

This doesn't really go in the format for this section but I don't think it fits anywhere else... Does anyone have examples of how they write up their solution to problems? I have one based around special relativity and I want to keep everything in a nice order so I wondered if anyone had...

That's great thank you :) Following on from that I know that Y/x1 = y/x2 cancels down to give x1 = x2 but can you explain why?

I'm taking a step back as I've found a concept I'm struggling with. If I have an equation: 2(x-1)/3 = (x/4)+1 I've been told I need to multiply by 12 to give me: 8(x-1) = 3x+12 However I'm struggling with the multiplication of fractions in his instance. Can anyone advise me how that...

Right, I've got so far as calculating g now and have calculated a very low value for g compared to Earth which is consistent with having a smaller mass than earth. I've also worked out an equation for m by rearranging λ=kT/mg ut the value doesn't match that of the two gases it could be by a...

Homework Statement I need to calculate the mas of a molecule of an unknown gas in the atmosphere from the values: T = 500 K mass of the planet = 1.5 × 1024 kg radius is 3.0 × 106 m universal constant of gravitation, G = 6.67 × 10^−11 N m^2 kg^−2 P at ground level = 2.0 × 10^7 Pa P...

Hmm I may not be differentiating anything actually! Sorry, my maths is lacking quite a bit so I mix up my terminology. But yes, that looks right (although I have P1 and P2 the other way around, I'll check that) I didn't know how to input it on here so attempted it in linear form.

Homework Statement I believe I need to rearrange this formula to find an equation for λ: P2 / P1 = exp( - (z2 - z1)) / λ Homework Equations I think I need to differentiate and find the natural log of both sides then rearrange The Attempt at a Solution Differentiate to...

I got that bit, I just wasn't sure whether we were actually given Q or U but I've worked it out: ∆U = Q = 29100 J ∆U = C_v (T_2-T_1) etc. Using Q as that gave me a sensible ratio of C_p to C_v so I'm happy!

1. What is the value of Q in this problem? Is it a value that's stated in the question or does it need calculating? A sample consisting of 5 moles of an ideal gas at a temperature of 300 K and a pressure of 1.00 × 105 Pa is heated to a temperature of 500 K at constant pressure. The amount...