Yup, I think you add all of them
It is typically 30 km to 50 km thick.
The angular speed is defined as:
<h2> ω=

</h2>
where



B.False
Einstein's vision of GR is NOT that somehow Gravity comes along and alters (indents?) some existing structure.
It is that Gravity (with its four possible sources) actually determines the entire global structure of Space-Time in which such sources are extant.
I would say 150 joules, i don't know if its right though check