Colors seen on the cover of your physics book are due to color
A) addition.
B) subtraction.
C) either of these
D) neither of these
Answer: B
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Molecular Speeds: The root-mean-square speed of the molecules of an ideal gas is v. The gas is now slowly compressed to one-half its original volume with no change in temperature. What is the root-mean-square speed of the molecules now?
A. 4v
B. 2v
C. v/
D. v
E. v/2
Star A has an apparent magnitude of 3 and Star B has an apparent magnitude of 5. Which star is brighter in our sky?
A) Star A B) Star B C) The two stars have the same brightness in our sky, but Star A is closer to us than Star B. D) There is not enough information to answer the question.
Which moons are sometimes called the Galilean moons?
A) the moons orbiting Uranus, which was once named "planet Galileo" B) the four largest moons of Jupiter: Io, Europa, Ganymede, and Callisto C) the moons that orbit their planet "backward" compared to their planet's rotation, such as Neptune's moon Triton D) the two largest moons in the solar system: Ganymede and Titan
The name for bad air is _______
What will be an ideal response?