Question

A cube with side length of L -0.5 m and mass of 500 kg is held by a rope in a tank filled with water (mass density 1000 kg/m"). If the atmospheric pressure is 10' Pa, determine: a. the magnitude and the direction of the total force acted on the top part of the cube, b. the buoyant force on the cube, c. the tension of the rope. nun in the 10-3 m Tone by the 5. A number of moles of monatomic ideal gas undergo the ABCA V (m3) thermodynamic process as shown in the figure. It is known that the gas pressure at state B is 150 kPa, Vo = 20 x 10-3 m3, To = 2500/R kelvin, where R is the universal gas constant, and the work done by the gas in the C-A process is 4200 J. a. Convert the V-T diagram of the system into a P-V diagram. b. Determine the ratio of the rms speed of the gas in state A and state B. LBL c. Calculate the heat and the work in each process and write your answers in the following table. Process Work (joule) Heat (joule) T To A-B B-C C-A 4200 2To T(K)

Answer 1

L=0.sm M=5ooky osof2} L=0.5 f = 1000 kg/m Pressurel = 105 pa A To dal force octed on the top part of the Eube → Pressure of Tüp surface of cabe (P) = Po + folk :P = {1•1•17*+ 1000q.61 m ( os)] P = (4.01 %90 + 2452-5) P = 100345 80019 pa force (f) = (1022) = 1.0345*10x10.5)2 F = 25863-125 N . 25-27 KAD Telowy ward force Boyout forre = (menght of fwd the placed) FB = {1000x (d.gyºrg-ei) = {122425W) © werght of luke = mg =(9.818800) = 4905 Tenxron = way le arn = 13678-75N THE Direction 1 2 26.250