christianmcafee
15.05.2021 •
Physics
I need to find how hot a brass doorknob is after being touched by a blowtorch for 15 seconds. The heat of the blowtorch is 2400 degrees Fahrenheit and the weight of the doorknob is 2.67619 kg. The initial temperature of the doorknob is 72 degrees farenheit.
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Ответ:
Most good electrical conductors are metal. Actually, rubber is used around wires as an insulator to help the current stay in a direct flow. Wood and plastic don't handle current very well, as it will most likely burn the wood and melt the plastic.
"D" Copper is the best answer.
I hope this helps!
~kaikers