<u>Answer</u> 1. <span>c. convection </span>2. b. When it is very cold
<u>Explanation</u> Water like any other liquid transfer heat energy through convection.
When a pot of water is put on a stove, the water at the top gets hot primarily by <span>convection. </span> A supperconductor is a material that can conduct electric current with no resistance at all. The supperconductivity can be achieved under cooled temperatures.
Certain materials can become superconductors under what conditions? <u>When it is very cold</u>
Maybe push or pull an object with a large amount of mass? you are force a (pushing through object) aka making contact. i hope i helped not good with physics :)
