El sistema energético que importancia tiene en el cuerpo

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.

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false

A( developed during the process of technology design