A neutron star is a compact star that forms from the gravitational collapse of a very massive star. The inward gravitational force can be so strong that a neutron star that started out to be twice as large as our Sun might have a radius of 13 km after collapse. What happens to the angular velocity of the neutron star

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 790 n/m. it is initially at rest on an inclined plane that is at an angle of 28 degrees with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is k = 0.14. in the initial position, where the spring is compressed by a distance of a = 0.18 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.

The mantle is made up of which structural zones?

Can you match these to the correct definition