Physics, 01.10.2019 05:20, faithyholcomb
For the great depths that may be encountered in the ocean the compressibility of seawater may become an important consideration. (a) assume that the bulk modulus for seawater is constant and derive a relationship between pressure and depth which takes into account the change in fluid density with depth. (b) make use of part (a) to determine the pressure at a depth of 6 km assuming seawater has a bulk modulus of 2.3 x 10^9 pa and a density of 1030 kg/m^3 at the surface. compare this result with that obtained by assuming a constant density of 1030 kg/m^3.
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A47.2 g block of copper whose temperature is 480 k is placed in an insulating box with a 91.8 g block of lead whose temperature is 200 k. (a) what is the equilibrium temperature of the two-block system? (b) what is the change in the internal energy of the two-block system between the initial state and the equilibrium state? (c) what is the change in the entropy of the two-block system? the heat capacities of copper and lead are 386 j/kg·k and 128 j/kg·k, respectively.
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