The uppermost part of the mantle is part of earths?

How many neutrons does element x have if it’s stormy umber is 33 and it’s mass number is 95?

What would be the strength of earth's gravitational field at a point where an 80.0 kg astronaut would experience a 80% reduction in weight

How to tell if two objects are in thermal equilibrium 1.the objects have the same temperature 2.the objects are the same size 3.the objects are touching each other 4.the objects temperatures are changing