Although the evidence is weak, there has been concern in recent years over possible health effects from the magnetic fields generated by electric transmission lines. A typical high-voltage transmission line is 20 mm above the ground and carries a 200 A current at a potential of 110 kV. Estimate the magnetic field strength on the ground underneath such a line.
What percentage of the earthâs magnetic field does this represent?

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving

Explain the comparisons between nature and packingtown that appears on pages 81 and 82 answer

Match each vocabulary term to its definition. 1. electrons neutral subatomic particles found in the nucleus of the atom 2. neutron lowest energy position of an electron in an atom 3. photon the path of an electron around the nucleus of an atom 4. ground state negatively charged, subatomic particles 5. protons packet of energy of specific size 6. element substance with only one type of atom 7. orbital positively charged, subatomic particles found in the nucleus of the atom