I’m so so so so sorry I don’t know
Answer
the concentration of electron/ volume (n) = 8.5 × 10²⁸ /m³
the drift velocity of electron


v = 2.615 × 10⁻⁴ m/s
time require is


t = 3231.35 s
If an object has more protons than electrons, then the net charge on the object is positive. If there are more electrons than protons, then the net charge on the object is negative. If there are equal numbers of protons and electrons, then the object is electrically neutral.
Source: https://www.khanacademy.org/science/ap-physics-1/ap-electric-charge-electric-force-and-voltage/electric-charge-ap/a/electric-charge-ap1
Hope this helps :)
Answer: The weight of a girl with a mass of 40kg is 392.266 Newtons.
Explanation: