11. Which of the following situations/observations is an application of thermal expansion?
A. Electrical power lines sag on hot days.
B. Railroad tracks are built in such a way that they can slide toward and away from each other on hot and cold days.
C. The mercury inside a thermometer goes up when it is dipped in hot water.
D. All of the above.
A. Electrical power lines sag on hot days.
B. Railroad tracks are built in such a way that they can slide toward and away from each other on hot and cold days.
C. The mercury inside a thermometer goes up when it is dipped in hot water.
D. All of the above.
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Answer:d.all of the above
Explanation:paki heart nlng po kung nakakatulong po sagot ko :)