Given that radius of orbit of earth and Mars is m and m respectively . [1 year= s , radius of sun = , mass of helium atom= kg ]
(1) Period of revolution of Mars
I found this to be 1.9 year .
(2) Mass of sun
i am not sure bout this
(3) Escape velocity of helium atom from the surface of the sun
i tried using this formula
Where M is the mass of sun and r is the radius of sun and of course G is the gravitation constant .