When the temperature rises some materials experience thermal expansion which means they get bigger, so it may make them harder to close because they don't fit as well.
The formula of work is Work (Joules)=Force (Newtons) · distance in the direction of the force (meters), therefore its just a matter of replacing factors.
Work done = 12 · 4.5= 54 joules
Explanation:
Calcium is the element that has 2 valence electrons.
Answer: "condensation reaction" .
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Explanation:
Regulate body temperature in the extremes of space. maybe