Recent content by frankhawes

Thanks for your example, I've been studying this sort of collision longer and am more familiar with it. This is also weird to me! I've never thought about it like that before. I've always led with the idea that momentum is conserved and therefore the relevant speeds and energies fall out. But...

Yeah okay dokay, that is nice. You're right, I think the assumption was to make the particular question easier and not to make the physics work. I'm pretty sure I understand it now, I've ran through the equations as well. Thanks again though, the blocking part for me was not realising that one...

Brilliant! Thank you, this bit at the end was the sort of vague feeling I had about it but this makes it clear. The idea that it can require more effort to give the same impulse is nice. Although there is something still bugging me. If WD = Fx what is the x that is different for the...

Thank you, this makes sense :)

Hello everyone! I was watching a Professor Lewin lecture from about 15 minutes onwards Where he talks about striking a block off-center. What is confusing me is that it seems that by striking it in a different place you are giving it more energy. This feels wrong to me because you are...

Okay, Thank you.

Thanks for your quick reply. I have my same confusions over angular velocity. Do you have any suggestions about what 'math' I can try? I agree this is probably a good way of developing an intuition for the convention. Thanks again, Frank

Hello everyone! I'm going to uni in October and I'm brushing up on my mechanics before I go. I've just got to a bit that has confused me before and has confused me again now: When you have a rotating object, say it is rotating in front of you in a vertical plane and it is rotating...

Thanks again - and for you reply about the neutronisation. I was also wondering though if the elements that we can't find on Earth (and resort to manufacturing in labs) are ever the product of supernova? for example Livermorium

Thank you for your reply - This is my first time using the site and the quality of all the responses I've had is incredible! When you say the outer layers "violently recoil" is this because when they strike the degenerate core it causes further contraction and produces the extra energy...

Wow thank you that was a brilliant reply with great detail. There really is a lot going on! The bit about the core over-collapsing slightly and the springing back is great to visualise. I have gone from this being one of the more shakey areas of the course to one I feel I understand better than...

Ahh thanks that kind of makes sense - so by coming in close to the massive, hot core they get 'new energy' from further fusion possible because of the high temperatures? Thanks for your reply that really did turn a lightbulb on haha :)

Hi everyone, I'm sitting my A-Level physics this year and am currently doing a bit of revision. I was reading about Neutron Stars and Supernovas when I came across this: "when the outer layers hit the surface of the neurtron star they rebound, setting up huge schockwaves, ripping the star...