Recent content by free_spirit

oops ! my bad, sorry bout that i did mean kilometres...sorry been at this for a while now and my brain is kinda mushy...thanks for pointing that out

ok thanks very much PeterO :) i have done a calculation but am not too sure whether this is correct at all... mp = rp x rs ms so, mp = 1.5 x 108km x 1.0 x 106km 2.0 x 1030kg mp = 150 000 000 000 000...

So far all the info i have is that; a) the star is 1 million miles from the centre of mass b) the planet is 150 million miles from the centre of mass; and c) both bodies are in circular orbits to the centre... so I'm not too sure how to use this data to calculate the answer... Ax

Hi all :) Hope the day has been good to you...i am stuck on a question for my uni assignment, and have been stuck on this one for about 3 days to no avail...i don't even know where to start. I'm not too sure whether i need a certain equation for the question or if i have to come up with one...