What are the three types of rocks?
What will be an ideal response?
Igneous, Metaorphic, Sedimentary
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If the conditions required for substantial amounts of oxygen to build up in a planetary atmosphere are quite rare, then life on other worlds
A) will probably not be present B) will progress much more rapidly because there would be less oxidation C) will progress at a similar rate as that on the Earth, except that it will remain anaerobic D) may still be common but may never be able to evolve past microscopic forms
A stunt pilot weighing 0.70 kN performs a vertical circular dive of radius 0.80 km. At the bottom of the dive, the pilot has a speed of 0.20 km/s which at that instant is not changing. What force does the plane exert on the pilot?
A. 3.6 kN up B. 4.3 kN up C. 2.9 kN down D. 2.9 kN up E. 5.8 kN down
If a sheet containing two very thin slits is heated (without damaging it), what happens to the angular location of the first-order interference minimum?
A) It moves toward the centerline. B) It moves away from the centerline. C) It doesn't change.
The standard unit of time is the
a. hour. b. day. c. second. d. minute.