Question

С какой силой взаимодействуют два маленьких заряда на расстояний 9 см друг от друга? заряд каждого шарика 3*10^-9Kl

Answer 1

Дано   R=9*10^-2 м     q1=q2=3*10^-9 Кл   F- ?

по закону Кулона

F=k*q1*q2/R^2=9*10^9*9*10^-18/81*10^-4=81*10^-9/81*10^-4=10^-5 Н=
=10 мкН

Ответ F=10 мкН

Answer 2

$F = k \frac{ q_{1}^2  }{r^2}$

k - коэффициент пропорциональности ( 9 * 10⁹ Н * м² / Кл² )
q₁ - заряд ( 3 * 10⁻⁹ Кл )
r - расстояние ( 9 см = 0,09 м )

$F = (9 * 10^9) * \frac{(3 * 10^{-9})^2}{0,09^2}$ = 0,00001 H 

Answer 3

Electrostatic Force Calculation

To calculate the force of interaction between two small charges, we can use Coulomb's law, which states that the force between two point charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.

Given: - Distance between the charges, r = 9 cm = 0.09 m - Charge of each sphere, q = 3*10^-9 C

Using Coulomb's law, the force of interaction (F) between the two charges can be calculated using the formula:

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

Where: - k is the Coulomb's constant, approximately equal to 8.9875 * 10^9 N m^2/C^2 - q1 and q2 are the magnitudes of the two charges - r is the distance between the charges

Calculation

Substituting the given values into the formula: F = (8.9875 * 10^9 N m^2/C^2) * |3*10^-9 C * 3*10^-9 C| / (0.09 m)^2

Calculating the force using the given values: F ≈ 0.9 * 10^-3 N

Therefore, the force of interaction between the two small charges at a distance of 9 cm from each other is approximately 0.9 * 10^-3 N.