Three balloons are inflated to the same size. the three balloons are submerged in buckets filled with ice water, tap water and water heated to 65°c. what results would you expect from this experiment? a) all the balloons would shrink. b) all the balloons would expand. c) the balloon in the ice water would expand. d) the balloon in the 65°c water would expand.

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