What is Gravitational Constant?

for orbital velocity, do you always add 6400 km to the altitude of orbit?

2 astroids one with a mass of 9x10^9 and the other with mass 6x10^8 kg are 10x10^10m apart.what is the gravitational force on the larger astroid?

a star orbited by two planets—planet A and planet B. The star is also orbited by a mysterious object, object X, that entered into the star’s gravitational field. The gravitational force between the star and planet A is the same as the gravitational force between the star and planet B. Explain why this is true

What is the mass of Planet X? What is the gravitational field on Planet X?

Explain why the gravitational force that exists between you and a friend sitting near you is significantly less than the gravitational force that exists between the earth and you.

The gravitational force between two giant lead spheres is 0.010 N when the centers of the spheres are 20 m apart. What is the distance between their centers when the gravitational force between them is 0.160 N?

Calculate the value of the gravitational field strength g, 250 km above the surface of Earth.

Calculate the force of gravity between a newborn baby (mass = 3 kg) and the planet Mars (mass = 6.4 × 1023 kg) when Mars is at its closest to Earth (distance = 5.6 × 1010 m).

Two masses are attracted by a gravitational force of 0.28 N. What will the force of attraction be if the distance between these two masses is halved?