Morning dew on the grass is a result of
A) evaporation of water.
B) the open-structured form of water crystals.
C) air pressure on water vapor.
D) slow-moving water molecules sticking to one another.
Answer: D
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Every second at Niagara Falls, some 5000 m3 of water falls a distance of 50 m. What is the increase in entropy per second due to the falling water? (Assume a 20°C environment).
What will be an ideal response?
Why isn't there a planet where the asteroid belt is located?
A) There was not enough material in this part of the solar nebula to form a planet. B) A planet once formed here, but it was broken apart by a catastrophic collision. C) Gravitational tugs from Jupiter prevented material from collecting together to form a planet. D) There was too much rocky material to form a terrestrial planet, but not enough gaseous material to form a jovian planet. E) The temperature in this portion of the solar nebula was just right to prevent rock from sticking together.
Orbital Angular Momentum: What is the greatest magnitude of the orbital angular momentum L that you can find in a state with n = 6?
A. 5.48 
B. 5.92 
C. 6 
D. 6.48 
What is the major rock-forming mineral group? Give examples of minerals in this group
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