in an experiment to determine the value of pi, a cylinder is measured to have an average value of 4.25 cm for its diameter and an average of 13.39 cm for its circumference. what is the experimental value of pi to the correct number of significant figures?

Apackage of supplies is dropped from a plane, and one second later a second package is dropped. neglecting air resistance, the relative velocity of the 1st package viewed from the second will 56) a) increase. b) be constant. c) be zero. d) depend upon their weight. e) decrease

Using the work energy theorem. what is the velocity of a 850kg car after starting at rest when 13,000j of work is done to it.

At what time will the interfering waves have an amplitudeof zero?