Acarpet is to be installed in a room of length 9.72 meters and width 17.30 of the room retaining the proper number of significant figures. 72 meters and width 17.39 feet. find the area in square meters

Positrons are spontaneously emitted from the nuclei of

Avoltaic cell converts chemical energy to

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.