As seen in 1987, when two silicon 28 nuclei fuse, or when seven ...

[james0929]

As seen in 1987, when two silicon 28 nuclei fuse, or when seven alpha particles are added to a Si-28 nucleus, the initial result in either case is:
 
  A) the shedding of bipolar planetary nebula shells.
  B) a nova explosion.
  C) iron 56.
  D) cobalt 56.
  E) nickel 56.

Question 2

Which of the statements below is part of both the Ptolemaic and Copernican models?
 
  A) The Earth orbits the Sun once a year.
  B) The Sun lies in the center of the Cosmos.
  C) The Moon orbits the Earth once a month.
  D) Epicycles are needed to explain retrograde motion of the planets.
  E) Venus' epicycle must always lie between us and the Sun.

[laurnthompson]

Answer to Question 1

E

Answer to Question 2

C

[james0929]

Thanks for the timely response, appreciate it

[triiciiaa]

TYSM