Recent content by tizzful

Hello, yes I realized afterwards that its in cm squared and I need it in meters squared and therefore had to multiply it by 10^-4. Thank you

Never mind, I solved it

Homework Statement A long rod, insulated to prevent heat loss along its sides, is in perfect thermal contact with boiling water (at atmospheric pressure) at one end and with an ice-water mixture at the other. The rod consists of a 1.00 section of copper (with one end in the boiling water)...

Homework Statement Calculate the work done by the gas during process 1-> 3-> 6. Express your answer in terms of Po and Vo. Homework Equations W=integral(pv) from V1-V2 W=PVln(V2/V1) The Attempt at a Solution 3Po*V*ln(3Vo/Vo) I'm not sure what I'm doing wrong, it keeps...

Yeah I got that far but I'm not sure how to separate real and imaginary parts. Is it literally just placing all the real parts and making them equal to 0 and all the imaginary parts and make them equal to 0? Sorry our lecturer didn't go through this and so I'm just left lost. :shy: Thank you

I get that z=a+ib but how did you get values for a and b? I feel really stupid asking this but I don't see it. I tried solving it and then making b=0 and a=0 and I'm not getting 1 and 2 as values...

First problem z^2+2z+1=0 where the z in 2z is the conjugate (has a little line ontop) I just ignored the conjugate because I wasn't sure how to solve it, and I got -1 which is one of the solutions but there's also 1+2i and 1-2i which I understand because they're both conjugate of each other...

Oh thank you, it just turned out I wasn't using the greek w and so basically got the question wrong! ugh very annoying!

Weight and Wheel ! (Linear and Angular Acceleration) Homework Statement Consider a bicycle wheel that initially is not rotating. A block of mass is attached to the wheel and is allowed to fall a distance . Assume that the wheel has a moment of inertia, I, about its rotation axis...

ahahah thank you! But I know KE is always positive because if velocity is negative it gets squared making it positive.. And that's what happened in this case.. But i still can't figure out the answer.. I think there's something wrong with me saying initial ME = 0...

actually the -1 gets squared and so it becomes one.. Its negative because the height is negative because down is positive and up is negative.. But from what you're saying why isn't it -1? It's also in the opposite direction...

Homework Statement Two blocks with different mass are attached to either end of a light rope that passes over a light, frictionless pulley that is suspended from the ceiling. The masses are released from rest, and the more massive one starts to descend. After this block has descended a...

Oh thank you! That clears up the first one but I'm still stuck on the T1 when accelerating. Would I just go T1=(M1+M2)a + (M1+M2)g?

Two Hanging Masses (TENSION) :) Homework Statement Two blocks with masses M1 and M2 hag one under the other. For this problem take the positive direction to be upward and use g for the magnitude of the acceleration due to gravity. The blocks are now accelerating upwads (due to the tension in...