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18.05.2021 •
Physics
How does a bimetallic strip work in a sinple alarm system
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Ответ:
Ответ:
The bimetallic strip in a fire alarm is made of two metals with different expansion rates bonded together to form one piece of metal. ... When the strip touches that contact, it completes a circuit that triggers the alarm to sound.
Ответ:
what experimental evidence led scientists to change from the previous model to this one?
a few of the positive particles aimed at a gold foil seemed to bounce back.
the colors of light emitted from heated atoms had very specific energies.
experiments with water vapor showed that elements combine in specific proportions.
cathode rays were bent in the same way whenever a magnet was brought near them.