It is theoretically possible for a substance to have a negative value of cubical expansivity, which means that the substance would contract rather than expand when the temperature increases. However, it is very rare for a substance to have a negative value of cubical expansivity over a significant range of temperatures.
One example of a substance that has a negative value of cubical expansivity over a limited range of temperatures is water. Water has a positive value of cubical expansivity at...
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- Statement; true
- Statement; false
- Statement; true
- Interrogative sentence; not a statement
- Imperative sentence; not a statement
- Exclamatory sentence; not a statement
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1. sol:
P | q | ~p | ~p ^ q |
| T T F F | T F T F | F F T T | F F T F |
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The meaning of his wife's dream is a sign of a bad omen.
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