Sammy Hagar is doing a concert on a stage that travels down the highway at 32 m/s. During warm- up the band realizes that their concert F needs to be adjusted to sound right to the audience which
is standing still. if a concert Fis 540 Hz, what frequency should they play to make it sound right

An insulated thermos contains 148 g of water at 72.7 ˚c. you put in a 11.7 g ice cube at 0.00 ˚c to form a system of ice + original water. the specific heat of liquid water is 4190 j/kg•k; and the heat of fusion of water is 333 kj/kg. what is the net entropy change of the system from then until the system reaches the final (equilibrium) temperature?