Author Question: As seen in 1987, when two silicon 28 nuclei fuse, or when seven alpha particles are added to a Si-28 ... (Read 12 times)

james0929 · **on:** Jul 27, 2018

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.