All of the following are good conductors of heat exept a. Wood
b. Aluminum
c. Copper Silver

(Sorry if its the wrong subject, Im not sure which science this is.)

Why is the use of carbon-14 limited

A1500 w electric heater is plugged into the outlet of a 120 v circuit that has a 20 a circuit breaker. you plug an electric hair dryer into the same outlet. the hair dryer has power settings of 600 w, 900 w , 1200 w, and 1500 w. you start with the hair dryer on the 600 w setting and increase the power setting until the circuit breaker trips. under what setting does the circuit breaker trip.

Use 4 to 5 complete sentences, explain the concepts of beats and how beats are produces.