How can OTEC installations provide fresh water as well as electricity? Explain
What will be an ideal response?
Part of the OTEC cycle involves evaporation and recondensation. This is a natural
place to separate fresh water from salt water.
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A(n) _____________reaction is when one liquid transforms to another liquid and a solid upon cooling.
Fill in the blank(s) with the appropriate word(s).
In the context of a planetary atmosphere, what is a bar?
A) the surface pressure on any planet B) a description of the atmospheric composition on Earth C) a place where lawyers can get sodas and other drinks D) a unit of pressure roughly equal to the atmospheric pressure at sea level on Earth
Which of the following statements describes a polar molecule?
A) The electrons in the molecule are distributed evenly throughout the molecule. B) The molecules are usually not attracted to one another very strongly. C) Polar molecules have the weakest intermolecular interactions with ionic compounds. D) The molecules have a high degree of symmetry. E) None of these statements describe polar molecules.
Two large non-conducting plates of surface area A = 0.25 m2 carry equal but opposite charges Q = 75 ?C. What is the energy density of the electric field between the two plates?
A) 1.7 × 107 J/m3 B) 5.1 × 1015 J/m3 C) 3.4 × 107 J/m3 D) 0 E) 2.5 × 1015 J/m3