What is the climate zone of minneapolis, minnesota?
polar
moist mid-latitude with severe winters
moist mid-latitude with mild winters 
humid subtropical

How are series and parallel circuits simililar? both have multiple paths for electrons to travel. both require resistors in their circuits. both require a switch to complete the circuit. both have at least one path for electrons to travel.

What can you increase the strength of an electromagnet by

Is there a point between a 10 nc charge and a 20 nc charge at which the electric field is zero?