Our Sun is considered to be a

A) low-mass star.
B) intermediate-mass star.
C) high-mass star.
D) brown dwarf.


A) low-mass star.

Physics & Space Science

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The magnitude of the total negative charge on the electrons in 1 mol of helium (atomic number 2, atomic mass 4) is:

A) 4.8 × 104 C B) 9.6 × 104 C C) 1.9 × 105 C D) 3.8 × 105 C E) 7.7 × 105 C

Physics & Space Science

Which of the following types of molecule is the most abundant in an interstellar molecular cloud?

A) H2 B) CO C) H2O D) NH3

Physics & Space Science

Whirl a rock at the end of a string and it follows a circular path. If the string breaks, the rock tends at first to

A) continue in a circular path. B) follow a straight-line path. C) spiral inward. D) fall straight downward.

Physics & Space Science

In a shuffleboard game, the puck slides a total of 12 m on a horizontal surface before coming to rest. If the coefficient of kinetic friction between the puck and board is 0.10, what was the initial speed of the puck?

A) 4.8 m/s B) 48.5 m/s C) 3.8 m/s D) 4.3 m/s

Physics & Space Science