How does a cuber typically make the ice cubes?
A) Water is circulated through freezing cells .
B) Water fills a cylinder and freezes on the inner walls.
C) Water is frozen in a cube-shaped mold one cube at a time.
D) Water fills a horizontal tray that is kept below freezing.
A
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A piston compresses two kilograms of air in an insulated cylinder such that the pressure changes from 100 kPa to 1000 kPa. If the initial temperature is 25ºC, the entropy change of the air is nearest:
A) 3.6 kJ/K B) 2.2 kJ/K C) 1.7 kJ/K D) 0.008 kJ/K
List three jobs in the area of plant science
What will be an ideal response?
What is the trend in human populations in developing countries?
A) Slowly decreasing B) Rapidly increasing C) Generally stable D) Information is lacking on human population trends.
Electrical controls such as switches ________
A) May be on either the source or ground side of the circuit B) Control electrical flow in the circuit C) Both A and B D) Neither A nor B