Three liquids are at temperatures of 8°C, 20°C, and 30°C, respectively. Equal masses of
the first two liquids are mixed, and the equi-
librium temperature is 14°C. Equal masses of
the second and third are then mixed, and the
equilibrium temperature is 26.5°C.
Find the equilibrium temperature when
equal masses of the first and third are mixed.
Answer in units of C.

Identify the arrows that show the correct direction of heat transfer. 66°f 112°f 98°f

Steam enters an adiabatic diffuser at 150 kpa and 1208c with a velocity of 550 m/s. determine the minimum velocity that the steam can have at the outlet when the outlet pressure is 300 kpa.

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?