In which eon of Earth's history did the heavy bombardment occur?
A) Hadean
B) Archean
C) Phanerozoic
D) Proterozoic
A
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Addition by 1. Components: Vector 
= 4.00 m points eastward and vector 
= 3.00 m points southward. The resultant vector 
+ 
is given by
A. 5.00 m at an angle of 36.9° south of east. B. 5.00 m at an angle of 53.1° south of east. C. 5.00 m at an angle of 71.6° south of east. D. 5.00 m at an angle of 18.4° south of east. E. 5.00 m at an angle of 26.6° south of east.
A certain ideal gas has a molar specific heat at constant volume Cv = 7R/5. What is its molar specific heat at constant pressure?
A) 12R/5 B) 7R/3 C) 12R/7 D) 12R/5 E) 4R
Reflection from rough surfaces is called ______________ reflection
Fill in the blank(s) with correct word
You can raise the temperature of an object with
a. microwaves. b. infrared waves. c. ultraviolet rays. d. all of the above. e. only (a) and (b) above.