Find the escape speed of a projectile from the surface of Pluto. Use a value of kg for the mass of Pluto and km for its diameter.
What is the Schwarzschild radius for the black hole at the center of our galaxy if it has the mass of kg solar masses? Use kg as the value of the Sun’s mass.
A planetoid has a mass of kg and a radius of 963.0 km. Find the magnitude of the escape velocity from the surface of the planetoid, considering it to be spherical.