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Olenka [21]
3 years ago
13

When two systems in contact are not at the same temperature, _____ occurs. heat flow expansion evaporation friction

Physics
2 answers:
Lady_Fox [76]3 years ago
7 0
Pretty sure heat flow occurs 
loris [4]3 years ago
6 0
Heat flow.....it is called conduction !
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2 years ago
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4 0
3 years ago
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