Which lunar feature most resembles the Moon's original crust?
A) Valleys
B) Craters
C) Maria
D) Bright rays
E) Highlands
E
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What point in the light curve below is the cooler star in front of the hotter star?
a.
1
b.
2
c.
3
d.
4
e.
5
Inside the same room, buoyant force is greater on
A) a helium-filled party balloon. B) an elephant. C) both the same
Mario Molina and Sherwood Rowland received the 1995 Nobel Prize for
A) their efforts to control chemical warfare. B) their efforts to control nuclear weapons. C) their experiments and theories concerning the chemical basis for atmospheric ozone depletion. D) their discovery of new ways to make the electronic portion of the electromagnetic spectrum more useable by all the people of the world. E) their experiments and theories concerning the chemical basis for global warming.
During takeoff a jet aircraft goes from 0 m/s to 60 m/s in 5 seconds. (a) What is the jet's acceleration? (b) What is the jet's speed after 22 seconds?