F = M (V^2/r) = 20 x 100 /.15 =13333.33 N<span>convert units as needed to wind up with Newtons Kg-m/s^2 hope it helps :)</span>
There's a few differences. In a physical change the actual substance doesn't change, where in a chemical change with chemical reaction, a new substance is formed. Physical change can be reversed, and chemical change can't.
The spring constant is the number of Newtons needed to cause an extension of 1metre. So in this case it is 15/0.3 = 50 N/m
Answer:
1) is to prevent accidental contact with other conductors of electricity
2) to prevent getting shocked
3) Plastic helps dissipate the heat as well as prevent the wire from getting too hot and causing fire.
4) Without plastic, hot and neutral wires cannot be run in the same conductor or same wire
Explanation:
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