What happens when you touch a metal doorknob after rubbing your shoes on the carpet

This is the number of complete movements of a wave per second.

How can you improve the percent yield of copper in this lab? check all possible strategies that will you do so. measure reactants precisely. stir to the reaction take place. chill the reactants before combining them. wait patiently until the reaction completes. make sure to recover as much copper as possible.

(asap) uneven heating of the earth's surface is due primarily to the position of the equator, north pole, sun, or moon?