Galaxies formed from tiny density perturbations that formed prior to the inflationary period
Indicate whether the statement is true or false
TRUE
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An imaginary line from one geographic pole to the other along the surface of Earth perpendicular to the equator is called
a. a longitude. b. a meridian. c. the International Date Line. d. a parallel.
If a spring-operated gun can shoot a pellet to a maximum height of 100 m on Earth, how high could the pellet rise if fired on the Moon, where g = 1.6 m/s2?
A) 17 m B) 160 m C) 3.6 km D) 100 m E) 610 m
A dictator has built a bunker for his use in emergencies. Its dimensions are shown below. When it floods to ground level during a tropical storm, the gauge pressure at point A, in Pa, is
a.
3.92 × 105.
b.
4.90 × 105.
c.
5.39 × 105.
d.
5.88 × 105.
e.
6.89 × 105.
Which relative dating principle states that in an undeformed sequence of sedimentary rocks, each layer is older than the one above and younger than the one below?
A) original horizontality B) superposition C) cross-cutting D) inclusion