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Question
There is more gold in 1 km3 of the ocean than the amount of gold mined in all of recorded history. How come we do not mine the oceans?A) It is too dilute to separate.
B) It would take too much energy.
C) It would cost too much.
D) all of the above
E) none of the above
Answer
This answer is hidden. It contains 1 characters.
Related questions
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Heat energy is measured in units of
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C) calories.
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A) decreases by 1/273.
B) decreases by 100/273.
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Which of these is the smallest?
A) 1 Celsius degree
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When work is done by a system and heat is subtracted, the temperature of the system
A) increases.
B) decreases.
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Which law of thermodynamics addresses the direction of heat flow?
A) First law
B) Second law
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Q:
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Q:
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Newton discovered
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