A large, flat, sediment-covered area on the ocean floor is called a(n) ______________
Fill in the blank(s) with correct word
abyssal plain
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The wavelength of a ruby laser is 694.3 nm. What is the energy difference between the two energy states involved in laser action? (c = 2.9979 × 108 m/s, h = 6.626 × 10-34 J ? s, 1 eV = 1.6022 × 10-19 J)
A) 1.812 eV B) 1.537 eV C) 3.572 eV D) 1.786 eV E) 1.646 eV
Buoyancy: A piece of wood is floating in a bathtub. A second piece of wood sits on top of the first piece, and does not touch the water. If the top piece is taken off and placed in the water, what happens to the water level in the tub?
A. It goes up. B. It goes down. C. It does not change. D. It cannot be determined without knowing the volumes of the two pieces of wood.
The U.S. national debt is about $6 trillion. Expressed in powers of ten, this is
A) $6 × 106. B) $6 × 109. C) $6 × 1015. D) $6 × 1012. E) $6 × 1010.
Why is magnifying power the least important of the three powers of a telescope?
What will be an ideal response?