Author Question: Consider the dead end element for cores of massive stars. Why is that element the dead end? A) It ... (Read 75 times)

809779 · **on:** Jul 27, 2018

Consider the dead end element for cores of massive stars. Why is that element the dead end?

A) It has the highest nuclear mass. B) It can only release energy by fission.
C) It has the highest mass per nuclear particle. D) It has the lowest nuclear mass.
E) It can only release energy by fusion. F) It has the lowest mass per nuclear particle.

Question 2

Suppose we look at two distant galaxies: Galaxy 1 is twice as far away as Galaxy 2. In that case, ________.

A) Galaxy 1 must be twice as big as Galaxy 2
B) we are seeing Galaxy 1 as it looked at an earlier time in the history of the universe than Galaxy 2
C) Galaxy 2 must be twice as old as Galaxy 1
D) we are seeing Galaxy 1 as it looked at a later time in the history of the universe than Galaxy 2