The concept that on the grandest of scales, the universe is similar in appearance everywhere is
A) isotropy.
B) special relativity.
C) universality.
D) homogeneity.
E) general relativity.
D
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If the distance from the Sun to the Earth is represented by roughly 15 meters, then the distance from the Earth to the Moon on the same scale would be
a. about 30 meters. b. about 10 meters. c. about 1 meter. d. small than your hand.
What is the average value of the magnitude of the Poynting vector at 1 meter from a 100-watt lightbulb radiating in all directions?
a. 1 W/m2 b. 4 W/m2 c. 2 W/m2 d. 8 W/m2 e. 12 W/m2
Which of the following would make the demonstration illustrated in this figure function less effectively?
a. Use a piece of cardboard with a greater mass. b. Use a piece of cardboard with a greater radius. c. Use a piece of cardboard with less mass and smaller radius. d. Use a thinner pencil. e. Use a thicker pencil.
Which of the following is a property of a Josephson junction?