A 20 watt light bulb uses 20 joules of energy every second. A person expends 50 watts of energy per stair when climbing up stairs. Calculate how long you could light the light bulb if the energy used to climb 20 stairs were converted to electricity.

iron would move it is magnetic there is a mag field around the current in the wire

no. dot product   =0 when vecs at right angles

first thing first of the answer is with technology. second thing second thing is that the big bang theory did not happened u see they say it did but what they dont realize is that like dinasures are still a round they might deny it but they and look at these 12 foot human skelteons they find lets see didnt the bible say something about giants. hope this peace.