A metal shpere with ane excess of 11 electrons touches an identical metal sphere with an excess of 15 electrons. After the spheres touch, the number of excess electrons on the second sphere is?
My book tells me it is 13, but I don't understand why. If someone could explain, I would appreciate it truly! Thanks!
(11+15)/2
BECAUSE WHEN YOU ADD 16 AND 11 YOU GET 26
16 + 11 = 26
THEN AS THE SPEARS TOUCH THEY COME TO EQUILIBRIUM OR EQUALITY.
SO 26/2
26 / 2 = 13
The 2 spheres must have an equal amont do to magn
26
When these two spheres come in contact, the stronger forces of repulsion on the second sphere will move two electrons onto the first sphere. When this occurs, the electrical forces will be in balance and there will be no further net movement of electrons.
13
because when two spheres come in contact, the stronger forces of repulsion on the second sphere will move two electrons onto the first sphere. When this occurs, the electrical forces will be in balance and there will be no further net movement of electrons.
To understand why the number of excess electrons on the second sphere after they touch is 13, let's break it down step by step.
1. Initially, the first sphere has an excess of 11 electrons and the second sphere has an excess of 15 electrons.
2. When the spheres touch, they will try to equalize their charges. Electrons can move from one sphere to another, but the total number of electrons remains constant.
3. Since electrons are negatively charged, they repel each other. This means that electrons will try to spread out as evenly as possible across the two spheres.
4. As a result of this repulsion, some electrons will move from the second sphere (with 15 excess electrons) to the first sphere (with 11 excess electrons). The goal is to balance the charges and minimize repulsion.
5. The number of electrons that move can be calculated by taking the difference between the excess electrons on the two spheres: 15 - 11 = 4.
6. Therefore, after the spheres touch, 4 electrons will move from the second sphere to the first sphere.
7. To find the new number of excess electrons on the second sphere, subtract the number of electrons that moved (4) from the initial excess (15): 15 - 4 = 11.
8. Hence, after the spheres touch, the second sphere will have 11 excess electrons.
So, the correct answer is 11, not 13. Your book may have a mistake.
The total excess charge is divided equally.
Total charge=11+15