Using your density-based roche limit calculated above, estimate the roche limit for a comet which has been captured by saturn's gravitational field. 8. [1mark] comets have a mean density of around 600kg m-3 and saturn's density is an impressively low 687 kg m-3. saturn has a radius of approximately 58200 km. don't forget to convert km to m.

Roche limit is 1.485 × m

Explanation:

given data

density comets d1 = 600 kg m^-3

density  Saturn d2 = 687 kg m^-3

radius r = 58200 km  = 5.82 × m

to find out

Roche limit

solution

we will find Roche limit  by given formula of Roche limit  that is

Roche limit  = 2.44 ∛(d2/d1)  × r     .............1

put here all value in equation 1 we get Roche limit

Roche limit = 2.44 ∛(d2/d1)  × r

Roche limit = 2.44 ∛(687/600)  × 5.82 ×

solve it and we get

so Roche limit is 1.485 × m

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .