The assumption of isotropy states that
a. the Universe looks the same at all epochs.
b. the Universe looks the same from all locations over sufficiently great distances.
c. the Universe looks the same in all directions over sufficiently great distances.
d. the Universe looks the same at all epochs, the Universe looks the same from all locations over sufficiently great distances, and the Universe looks the same in all directions over sufficiently great distances.
e. None of the other choices are correct.
c
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The specific heat of ice is 2.100 kJ/kg 
the heat of fusion for ice at 0
is 333.7 kJ/kg, the specific heat of water 4.186 kJ/kg 
and the heat of vaporization of water at 100
is 2,256 kJ/k. What is the final equilibrm temperature when 10.00 grams of ice at -15.00
is mixed with 2.00 grams of steam at 100.0
?
A. 27.54
B. 33.79
C. 40.12
D. 45.71
E. 53.53
On a planet in the solar system where the sky normally scatters light of lower frequencies, its sunsets would be
A) reddish. B) yellow-greenish. C) bluish. D) whitish.
How much more energy would be required to bring the entire world up to the average per capita U.S. energy use? Recall that world average energy use is 57 GJ per capita and the U.S. average energy use is 300 GJ per capita
What will be an ideal response?
The interstellar clouds called molecular clouds are
A) the clouds in which elements such as carbon, nitrogen, and oxygen are made. B) clouds that are made mostly of complex molecules such as carbon dioxide and sulfur dioxide. C) the hot clouds of gas expelled by dying stars. D) the cool clouds in which stars form.