The net resultant force acting on an object is equal to what?

What is the rate of change in a objects position?

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.

Is the portion of the electromagnetic spectrum that has a frequency just above that of visible light.