Two charged particles exert an electrostatic force of 32 N on each other. What will the magnitude of the force be if the distance between the two particles is increased to twice the original distance?

Write the function getkthdigit(n, k) that takes a possibly-negative int n and a non-negative int k, and returns the kth digit of n, starting from 0, counting from the right

The period of a pendulum varies directly as the square root of the length of the pendulum and inversely as the square root of the acceleration due to gravity. find the period when the length is 144 cm and the acceleration due to gravity is 980 cm per second squared, if the period is 7pi seconds when the length is 289 cm and the acceleration due to gravity is 980 cm per second squared.

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.