The letter N is symmetric (in the sense defined in this chapter) for rotations around an axis going through its center that points in which of the following directions?
A. 
B. 
C. Perpendicular to the plane of the letter
D. A and C
E. A, B, and C
C. Perpendicular to the plane of the letter
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You run directly towards a plane mirror at 5 m/s. How fast do you approach your image?
A) 0 m/s B) 5 m/s C) 7 m/s D) 10 m/s E) 2 m/s
For a mixture of two different elements A and B, at one atmosphere of pressure three phases are in equilibrium (?, ?, and liquid), and it is desired to keep all three phases in equilibrium. Which of the following statements is true?
(a) If the temperature is changed, the composition of the ?, ?, and liquid phases changes. (b) The composition of the ? phase is changed by adding more A-type atoms. (c) The composition of the liquid phase is changed by adding more A-type atoms. (d) Nothing can be changed.
Identify the FALSE statement. Cosmology:
is the study of the structure and evolution of the Universe. has ancient beginnings in many cultures. was dominated by the geocentric model for centuries. became more scientific and modern with the work of Renaissance thinkers like Copernicus, Kepler, Galileo, and Newton. currently advocates the heliocentric model, which states that the Sun, not the Earth, is the center of the Universe.
Today the majority of the mass of the universe is already in the form of black dwarfs, the solution to the "dark matter" problem
Indicate whether the statement is true or false