Suppose that Earth's ice caps melted, but everything else about the Earth's surface and atmosphere stayed the same. What would happen to Earth's average surface temperature?
A) The surface temperature would increase.
B) The temperature would not be affected at all.
C) The surface temperature would decrease.
D) The surface temperature would change radically, until it was equal to the melting temperature of ice.
Answer: v
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You would be richest if your hunk of gold had a mass of one kilogram
A) on the moon. B) on Earth. C) Actually it wouldn't make any difference.
A planar cross section through two spherical waves emanating from the sources S1 and S2 in the plane is shown in the figure. The black circles are one and two wavelengths from their respective sources. The lighter circles are one-half and one-and-a-half wavelengths distant from their respective sources. If the phase at S1 and S2 is zero at this instant,
and the waves shown arriving at P2 both arrive with amplitude A, the difference in phase angle at point P2 (in radians) is
?
?
a.
0.
b.
?/2.
c.
?.
d.
3?/2.
e.
2?.
1.65 billion is the same as
a. 1.65 × 10^12. b. 1.65 × 10^9. c. 1.65 × 10^6. d. 1.65 × 10^5. e. 1.65 × 10^3.
There is a greater proportion of carbon-14 in
A) new bones. B) old bones. C) same in each