You just found a metallic object in a creek bed. you have found its mass to be 96.5 g, and it displaces 5ml of water. what is the substance?
a.) aluminum
b.)iron
c.)gold
d.)none of the above

An architect plans to use solar energy to heat the next house he designs. what principle of absorption and infrared energy can be applied to the design of the new house? how could she apply to those principals?

Which planet do you think would be easiest for humans to colonize some day?

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.