Question

Два одинаковых металлических шарика с зарядами -8 мкКл и 12 мкКл привели в соприкосновение и развели на прежнее расстояние. Во сколько раз и как изменилась сила их электрического взаимодействия? Ответ округлите до десятых долей. *

Answer 1

Ответ:

Уменьшится в 24 раза

Объяснение:

q1= -8*10^-6 Кл   q2=12*10^-6 Кл   F1/F2=?

===

F1=k*|q1|*|q2|/r²

q=(q1+q2)/2=(-8+12)*10^-6/2=2*10^-6 Кл

F2=k*q²/r²

F1/F2=(8*12/4)=24

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Answer 2

Calculation of the Electric Force between Two Charged Spheres

To calculate the change in the electric force between two charged spheres, we need to use Coulomb's law. Coulomb's law states that the electric force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.

Let's denote the charges of the two spheres as q1 and q2, with values of -8 μC and 12 μC respectively. The initial distance between the spheres is not specified, so we'll assume it to be some arbitrary value.

According to Coulomb's law, the electric force (F) between the two spheres can be calculated using the formula:

F = k * (|q1| * |q2|) / r^2

where: - F is the electric force between the spheres, - k is the electrostatic constant (approximately equal to 9 × 10^9 N·m^2/C^2), - |q1| and |q2| are the magnitudes of the charges of the spheres, and - r is the distance between the centers of the spheres.

To determine the change in the electric force, we need to compare the initial force (F_initial) with the final force (F_final) after the spheres are brought back to their original distance.

Calculation Steps:

1. Calculate the initial electric force (F_initial) using the given charges and initial distance. 2. Calculate the final electric force (F_final) using the same charges and the initial distance. 3. Determine the ratio of the final force to the initial force to find the change in the electric force.

Let's perform the calculations step by step.

Step 1: Calculate the Initial Electric Force (F_initial)

Using Coulomb's law, we can calculate the initial electric force (F_initial) between the two spheres. However, since the initial distance is not specified, we cannot provide an exact value for the initial force without that information.

Step 2: Calculate the Final Electric Force (F_final)

Similarly, without the initial distance, we cannot calculate the final electric force (F_final) accurately.

Step 3: Determine the Change in the Electric Force

Since we don't have the values for the initial and final forces, we cannot determine the exact change in the electric force between the spheres.

Apologies for not being able to provide a specific answer to your question due to the missing information. If you have any additional details or if there's anything else I can assist you with, please let me know!