Question

1-A piece of ebonite has a net charge of +7.20µC. How many more protons than electron does this piece of plastic have?

2-If particles A, B, and C, with charges -6.0 µC, 8.7 µC, and -5.4 µC respectively, are forcefully thrown together and then separate what is the net charge on particle B?

3- An proton is placed in a constant electric field of 8.16x10⁴N/C.

1. What is the force on the electron?
2. If the electron is released, what is its speed after 4.0 ps?

4-What amount of work is required to bring a +3.1µC charge to within 5.0mm of an +2.7µC charge?

5. An electron is accelerated through a uniform electric field of 5.1x10⁶V/m.
   1. What is the energy of the electron in keV if it moves 0.5m?
   2. What is the final velocity of the electron?

Answer 1

Ans 1: Since this is a positive charge it is made up of extra protons. The charge on each proton is equivalent to the charge on electron. Now from the quantization of charge, total charge = number of proton x charge on each proton

Thus, no of proton = total charge/charge on each proton

= = number of protons

Note: In Accordance with the Chegg policy if you ask more than one question in the single picture then only the first one will be answered.