00:01
Hello, so this question i'm going to be using capitalist law, okay? so from, so here we're going to be using the third one, okay? from cap plus third law, the period squared is proportional to the radius cube.
00:30
Okay, so in this case you can call r the length of the semi -major axis.
00:36
Okay, so we can say, i mean, so we can do some approximation.
00:46
See t squared is equal to r q okay well we can say so here r cube right equals we're given a period to be 125 right so squared and that's going to be equal to 15 6 to 5 so now our r or the length is going to be square root in fact this is going to be cubic root right oops a second it's the cubic root of 15625.
01:39
This is going to be 25.
01:48
So that's going to be the comet's average distance from the sun.
02:00
And let's see.
02:02
So the length of the semi -axis, which is more or less than the or less the average distance from the sun...