Question

expression for escape velocity from earth's surface, if its radius becomes half and mass reduces to one third

Answer 1

Answer:

There are two basic parts to a black hole: the singularity and the event horizon. The event horizon is the "point of no return" around the black hole. It is not a physical surface, but a sphere surrounding the black hole that marks where the escape velocity is equal to the speed of light.

Explanation:

hope it helps u!

Answer 2

Escape velocity of the planet from the surface is

V = √(2GM/R)

V² = 2GM/R

If R becomes R/2 & M becomes M/3 then

→ V² = 2G(M/3)/(R/2)

→ V² = 4GM/3R

→ V(new) = 2√2/√3(√2GM/R)

→ V(new) = 2√2/√3V