Chemistry, 19.10.2019 21:30 Angeldelissa

What is required in order for heat to transfer between two objects & then how does it move

a) two objects need same temperatures, heat travels in both directions
b) two objects need different temperatures, heat travels from the cooler object to the hotter object
c) two objects need different temperatures, heat travels from the hotter object to the cooler object

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What is required in order for heat to transfer between two objects & then how does it move