Radioactive carbon, or c-14, is used to date fossil remains. when c-14 decays, as seen in the nuclear equation, it produces what nuclide of nitrogen? a) n-7 b) n-13 c) n-14 d) n-15

20) what is a magnetic field? 21) in which direction do magnetic field lines always point? 22) sketch a diagram showing how a plotting compass points around a 23) name two magnetic poles that will: a) attract each other b) repel each other. 24) explain why you can use a compass to navigate. 25) what's an electromagnet? 26) list two ways to increase the strength of an electromagnet. 27) the wire in a simple motor feels a force when a current flows through it. why is this? i need answers to check mine