A230-km-long high-voltage transmission line 2.0 cm in diameter carries a steady current of 1,100 a. if the conductor is copper with a free charge density of 8.5 1028 electrons per cubic meter, how many years does it take one electron to travel the full length of the cable? (use 3.156 107 for the number of seconds in a year.)

28.23 years

Explanation:

It takes 28.23 years to take one electron to travel the full length of the cable.

3.156 107 = number of seconds in a year.

230000 / (2.58 x 10^-4) = 8.91 x 10^8 second.

good for her? ? where is the question?

diagram is missing, but i will try to explain your doubt.

answer:

amplitude is the maximum displacement or distance moved on a point of a vibrating body or wave measured from its equilibrium position.it is equal to half the length of vibration path.