Four identical metallic objects carry the following charges: +4.2 µC, +5.4 µC, -2.2 µC, and -4.4 µC. The objects are brought simultaneously into contact, so that each touches the others. Then they are separated.

How many electrons (or protons) make up the final charge on each object?

The total charge is 9.6-6.6 = +3.0 uC

Each object gets 1/4 of that after they are contacted and separated.

Divide by the electron charge, e, for the number of excess protons on each object.

To determine the final charge on each object, we need to find the net charge after they are brought into contact and separated.

When two objects are brought into contact, charge can be transferred between them. However, the total charge remains conserved.

Let's denote the charges of the objects before they are brought into contact as follows:

Object A: +4.2 µC
Object B: +5.4 µC
Object C: -2.2 µC
Object D: -4.4 µC

When they are brought into contact, the charges distribute themselves equally among the objects. This means that the total charge remains unchanged, but it is shared by all four objects.

First, let's find the total initial charge:
Total initial charge = Charge of A + Charge of B + Charge of C + Charge of D
Total initial charge = +4.2 µC + 5.4 µC - 2.2 µC - 4.4 µC
Total initial charge = 3.0 µC

Since there are four objects, each object will carry one-fourth of the total charge after they are separated:

Final charge on each object = Total initial charge / Number of objects
Final charge on each object = 3.0 µC / 4
Final charge on each object = 0.75 µC

Now, to determine the number of electrons (or protons) making up this charge, we need to convert the charge to elementary charge.

1 coulomb (C) = 6.242 x 10^18 elementary charges

Final charge on each object in elementary charges = Final charge on each object (C) / Elementary charge
Final charge on each object in elementary charges = 0.75 µC / (6.242 x 10^18 elementary charges)

Calculating this, the final charge on each object in elementary charges is approximately 1.20 x 10^19 elementary charges.

To find out the final charge on each object after they have been brought into contact with each other, we need to understand the concept of charge conservation.

Charge conservation states that the total amount of charge before and after an interaction remains the same. In other words, charge is neither created nor destroyed, but it can be transferred from one object to another.

In this scenario, the objects have different charges initially, but when they are brought into contact, they will redistribute the charge until reaching an equilibrium. The final charge on each object will depend on their initial charges and the number of electrons or protons exchanged during the process.

Let's analyze the situation step by step:

1. Determine the net charge: Since it is mentioned that the four objects touch each other, their charges will redistribute to achieve equilibrium. To find out the net charge after the objects have been in contact, we need to sum up their initial charges:

Initial total charge = +4.2 µC + +5.4 µC + (-2.2 µC) + (-4.4 µC)

Performing this calculation, we get:
Initial total charge = 3.0 µC

2. Determine the final charge on each object: Since the four objects are identical, they will distribute the net charge equally among themselves. To find out the final charge on each object, we need to divide the net charge by the number of objects (four in this case):

Final charge on each object = Initial total charge / Number of objects

Performing this calculation, we get:
Final charge on each object = 3.0 µC / 4

The final charge on each object is 0.75 µC.

3. Determine the number of electrons (or protons) making up the final charge: Given the value of the final charge on each object, we can now calculate the number of electrons or protons involved.

To determine the number of electrons, we need to know the elementary charge (e) of an electron. The elementary charge is approximately 1.6 x 10^(-19) C.

Number of electrons = Final charge on each object / Elementary charge

Performing this calculation, we get:
Number of electrons = 0.75 µC / (1.6 x 10^(-19) C)

The result will be in scientific notation, where the value before 'x' represents the coefficient, and the value after 'x' represents the power of 10.

Therefore, the final answer will provide the number of electrons (or protons) making up the final charge on each object.