The type of lens that spreads parallel light is a
A) converging lens.
B) diverging lens.
C) combination converging-diverging lens.
B
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What major events happened in the Hadean Eon?
a. The planet was so hot that its surface was a magma ocean b. Underwent intense meteor bombardment c. Internal differentiation d. Formation of Earth's initial atmosphere e. All of the above
A vessel under 2.015 atm pressure contains nitrogen, N2, and water vapor, H2O. The partial pressure of N2 is 1.908 atm. What is the partial pressure of the water vapor?
A) 0.107 atm B) 1.908 atm C) 2.015 atm D) 3.923 atm
Is an ionic compound an example of a chemical compound, or is a chemical compound an example of an ionic compound?
A) A chemical compound is an example of an ionic compound. B) Neither is an example of the other. C) Each is an example of the other. D) An ionic compound is an example of a chemical compound.
It is estimated that about ________ undocumented immigrants entered the United States in 2009, most along the nearly 2,000 mile-long U.S.-Mexican border guarded by about 17,000 federal agents
A) 1 million B) 600,000 C) 300,000 D) 220,000 E) 150,000