________ were introduced into western Europe in the Middle Ages.
A) Waterwheels
B) Windmills
C) Automobile engines
D) Solar panels
Correct Answer:
Verified
Q31: Perhaps the first mechanical device used to
Q32: The fact that a heat pump requires
Q33: The first fuel was
A)coal.
B)petroleum.
C)blubber.
D)wood.
Q34: The inevitable energy lost as heat in
Q35: The number of possible microstates will be
Q37: Wood,crop residues,and _ still remain the main
Q38: Which of the following is a fuel?
A)HCl
B)H₂O
C)C
D)CO₂
Q39: Fuels are _ forms of matter.
A)oxidized
B)reduced
C)acidic
D)basic
Q40: Which physical state has the lowest entropy?
A)solid
B)liquid
C)gas
D)All
Q41: Which of the following is NOT a
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