10) What do we mean by dimension in the context of relativity?

10) What do we mean by dimension in the context of relativity? A) the height of an object B) the letter used to represent length mathematically C) the number of sides that we can see when we look at an object D) the number of independent directions in which movement is possible E) the size of an object 11) Neutron stars are sometimes observed at the center of a A) protostar B) supernova remnant C) planetary nebula D) red supergiant E) None of the above 12) How does a 1.2-solar-mass white dwarf compare to a 1.0-solar-mass white dwarf? A) It has a smaller radius. B) It has a higher surface temperature. C) It is supported by neutron, rather than electron, degeneracy pressure. D) It has a lower surface temperature. E) It has a larger radius. 13) Which of the following is a consequence of Hubble"s Law? 14) Which will eventually win out and determine the ultimate fate of the Universe? A) Gravity B) The rebel alliance C) Dark Matter D) Dark Energy E) None of the above 15) How do obse