coulomb s law states that the magnitude of the electrostatic force of attraction or repulsion between two point charges is directly proportional to the product of the magnitudes of charges and inversely proportional to the square of the distance between them f k q1 q2 r2 k is coulomb s constant and equals 140 q1 is charge of first body c q2 is charge of second body c r is distance between two charged bodies m reference https en wikipedia orgwikicoulomb27slaw calculate the electrostatic force of attraction or repulsion between two point charges coulombslaw15 5 20 15 12382849136 06 coulombslaw1 15 5 5392531075 38 coulombslaw20 50 15 39944674632 44 coulombslaw5 8 10 3595020716 92 coulombslaw50 100 50 17975103584 6 calculate the electrostatic force of attraction or repulsion between two point charges coulombs_law 15 5 20 15 12382849136 06 coulombs_law 1 15 5 5392531075 38 coulombs_law 20 50 15 39944674632 44 coulombs_law 5 8 10 3595020716 92 coulombs_law 50 100 50 17975103584 6
def coulombs_law(q1: float, q2: float, radius: float) -> float:
    
    if radius <= 0:
        raise ValueError("The radius is always a positive number")
    return round(((8.9875517923 * 10**9) * q1 * q2) / (radius**2), 2)


if __name__ == "__main__":
    import doctest

    doctest.testmod()