Suppose that Democritus were alive today, and that he saw a bright red fire truck. He would say that
A) the color of the fire truck, and the atoms of which it is made, are equally real.
B) the color of the fire truck is more real than the atoms of which the truck is made.
C) the color of the fire truck is less real than the atoms of which it is made.
D) neither the color, nor the truck, nor the atoms are real.
Question 2
Find the speed of an ocean wave whose vertical displacement y as a function of time t is given by y(x,t) = 3.7 cos(2.2x - 5.6t), where all quantities are in SI units.
A) 2.5 m/s
B) 1.9 m/s
C) 3.5 m/s
D) 4.5 m/s
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