Which is the correct model to describe our Solar System?

A) geocentric
B) heliocentric
C) random motion
D) lunarcentric
E) planocentric


Answer: B) heliocentric

Physics & Space Science

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A type II supernova

a. occurs when a white dwarf's mass exceeds the Chandrasekhar limit. b. is the result of helium flash. c. is characterized by a spectrum that shows hydrogen lines. d. occurs when the iron core of a massive star collapses. e. is characterized by a spectrum that shows hydrogen lines and occurs when the iron core of a massive star collapses.

Physics & Space Science

When Mary is 3.00 m from the center of a merry-go-round, her tangential speed is a constant 1.88 m/s. (a) What is her angular speed in rad/s? (b) What is the magnitude of her linear acceleration?

What will be an ideal response?

Physics & Space Science

Folded rock layers that resemble an arch are called

a. inclines. b. synclines. c. anticlines. d. paraclines.

Physics & Space Science

Which of the following statements is true about the spin-orbit coupling effects on the transitions of an atom such as sodium? Assume sodium is modeled by a single electron atom

a.The difference in the energy of a split state does not depend on the electron's angular momentum, but instead the angular momentum of the nucleus. b. The differences in energy level transitions are significant enough to change the order of filling of the subshells. c.Electrons with a state of l = 0 never have split energy levels. d. For single electron atoms (or atoms with one electron outside a filled shell) each nl state is made a doublet.

Physics & Space Science