An outbreak of a dangerous infectious disease occurred in several areas across a large city. the centers for disease control (cdc) was notified immediately, and they isolated the people who had the disease. which statement best explains what happened during the outbreak? a. the cdc contained an epidemic. b. the cdc contained a pandemic. c. the cdc violated the rights of the small town. d. the cdc violated health protocols.

An athlete swings a ball, connected to the end of a chain, in a horizontal circle. the athlete is able to rotate the ball at the rate of 8.13 rev/s when the length of the chain is 0.600 m. when he increases the length to 0.900 m, he is able to rotate the ball only 6.04 rev/s. (a) which rate of rotation gives the greater speed for the ball? 6.04 rev/s 8.13 rev/s (b) what is the centripetal acceleration of the ball at 8.13 rev/s? m/s2 (c) what is the centripetal acceleration at 6.04 rev/s? m/s2