2002 multiple choice question (1 Viewer)

[HSC :(]

hey
can anyone work out how to do question 5 from the multiiple choice in te 2002 hsc paper?

thanx

 

[Rahul]

this is the 2002 hsc right?

have you tried using keplers law?

find out r^3/t^2 for alif and then just substitute in the values to find the perid of ba.

did u remember to convert the period from days to seconds? that might have been the mistake