# Question: please answer e and f find the charge on the...

###### Question details

Please answer (e) and (f)

Find the charge on the other metal ball when it is connected
with the Van de Graaff generator,the generator initially has a
charge of +3.5 μC on its surface. It has a radius of 15 cm. It is
connected by a long, thin, conducting wire to a neutral metal ball
with a radius of 1.0 cm which is “a long way away” from the Van de
Graaff generator.

(a) Find the charge on the small metal ball after this has
been done. Carefully explain the thought process.

(b) Find the electric potential at each of the
positions:

• Point A: 1.50ˆi m

• Point B: 1.50ˆi − 0.50ˆj m

(c) Write the potential as a function of y for points on the
line x = 1.50 m, then plot it.

(d) Looking at the plot that you made in (b), if an electron
passes through B and then later passes through A, will it be going
faster at A or B? Don’t do any calculation to determine this; just
look at your graph and think.

(e)an electron passes through point B moving at a speed of
1.00 × 107 m/s. It later passes through point A. How fast is it
going as it passes through point A?

(f) Use your answer to part 1c to find the y-component of the
E-field at point B.