in an experiment a 0.014 kg rubber stopper is attached to one end of the string a student world's the stopper overhead in a horizontal circle with the radius of 0.75 m the stopper completes 10 Revolutions in 5 seconds. a) determine the speed of the whirling stopper. b) calculate the magnitude of the centripetal focre on the whirling stopper

Which notation is used to represent an alpha particle? a. b. c. d.

Anonzero net force acts on a particle and does work. which one of the following statements is true? the kinetic energy of the particle changes, but the speed of the particle does not change. the kinetic energy of the particle does not change, but the speed of the particle does change. the kinetic energy of the particle changes, but the velocity of the particle does not change. the kinetic energy and the speed of the particle change, but the velocity of the particle does not change. the kinetic energy, speed, and velocity of the particle change.

How do you count the total number of atoms present on one side of a chemical equation?