Recent content by KiyoEtAlice

Okay I get it thanks!

I'll try it! thanks!

:cry: Does anyone know how to draw it? Please help me if you do because I'm more stuck than ever and it's due very soon :(

Okay, now I'm stuck agian. I'm not sure which formula to use to calculate it, or how to calculate it :(

hmm... so in this case is it provided or do I have to work it out? I'm still a little confused about what's been given :(

Okay thank you. Although, I am a little stuck, what is the length the "chord" (the distance it traveled)?

Sorry, that's because I've tried using simple geometry and I think it's worng, but I'm blank about what formula I should use. I'm trying to understand this. I understand the last bit, but I'm just trying to really understand it in deep... nothing about your explanation, I'm just blank and tired...

My friend helped explain it to me, so I'm through with this. Thanks anyways.

Sorry, but I don't get it.

Okay I get it thanks! But I don't know how to fraw spacetime diagrams, can anyone teach me how I should do it for my question?

Homework Statement I've attached a picture which include the question -- I found it on the net, and it's exactly the same as my homework. Homework Equations I'm not sure which formula to use. It's due pretty soon, so please help! :cry:

URGENT! T and U paradox Sorry I know I posted this already, but I realized that it isn't really introductory physics: Homework Statement I'm really confused about how I should do this problem and this is urgent so if anyone can help, it would be very much appreaciated. Thanks. T and U...

It's part of the book pratice exercise, nothing complusory, but it's getting on my nerves because it's the last problem of the lot (the other belong to different catorgories). This is pretty much a straight forward definition: http://www.answers.com/topic/equivalence-principle Or simple...

I'm not sure... they only concept that I can think of is the equicalence principle, but I've always been bemused on this subject, so I don't know.

Homework Statement Use the equivalence principle to explain the observation that a helium balloon leans forward in a forward-accelerating car. Homework Equations I don't think equations are needed. The Attempt at a Solution I'm completely confused on this question