Vodka an alcoholic beverage is a 50-50 mixture of ethyl alcohol and water. If a person buys 50 liter of vodka at $8 per liter at -5 °C and sells it at $8 per liter at 40 °C. How much profit you will the person make. The volume coefficient of ethyl alcohol
and water are 7.5x 10-40c-1 and 2.1 x 10-4 0-1

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