A satellite of mass 4500 kg orbits the Earth in a circular orbit of radius of 9.5 106 m (this is above the Earth's atmosphere).The mass of the Earth is 6.0 1024 kg. What is the magnitude of the gravitational force on the satellite due to the earth

Determine the fraction of the magnitude of kinetic energy lost by a neutron (m1 = 1.01 u) when it collides head-on and elastically with a target particle at rest which is 21h (heavy hydrogen, m = 2.01 u).

What do the atoms of elements in the same group have in common? a. they have the same atomic numbers. b. they have the same average atomic masses. c. they have the same number of electron shells. d. they have the same number of electrons in their outermost shells.

How many astronauts have walked on the moon?