The following ingredients are thrown into an insulated cup. Find the equilibrium temperature of the mixture. There are no phase changes. (kg` Volume (m³) Density \m³ Specific Heat () Initial Temperature (K) Name \kg K, Water 1 1000 4181 273 Gold 0.1 19,300 10,490 4500 130 200 Silver 0.05 235 550 Titanium 0.5 527 783 Nickle 0.15 8890 443 600 Brass 0.1 8500 385 780
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- = A steel rod with a length of I 1.55 m and a cross section of A = 3.04 cm² is held fixed at the end points of the rod. What is the size of the force developing inside the steel rod when its temperature is raised by AT = 25.0 K? The coefficient of linear expansion for steel is a = 1.17x10-5 1/K, and the Young modulus of steel is E = 200.0 GPa. Submit Answer Tries 0/121:59 Untitled Question 3 points A tank has a volume of 0.5 m' and contains 4 mol of hellium gas at 25°C The total translational kinetic energy of the gas molecules and v of the helium atoms, if m6.64x107 kg /molecule is: O (6.17x10-21 J, 1363 m/s) O (1.5x104 J, 1113 m/s) O None of the above O (1.5x10*4 J. 1363 m/s) O (1.55x10^4 J, 1390 m/s) Submit Page 1 of 1[3 kW] 13. A copper rod and an aluminum rod of equal diameter are joined end to end in good thermal contact. The temperature of the free end of the copper rod is held constant at 100°C and that of the far end of the aluminum rod is held at 0°C. If the copper rod is 0.15 m long what must be the length of the aluminum rod so that the temperature at the junction is 50°C? [9 cm] diua 2 00 heated
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- Three moles of an ideal gas at 135C and 0.5 atm is allowed to expand 1 atm at a constant pressure to a volume twice as large. What is the new temperature?Gas is contained in a 6.00-L vessel at a temperature of 18.0°C and a pressure of 8.00 atm. (a) Determine the number of moles of gas in the vessel. 2.00 mol (b) How many molecules are in the vessel? 1.205 X A mole of objects is equal to how many objects? moleculesA molecule in Earth's atmosphere at 20 °C has a most probable energy E = kT/2 = 2.02 ×10-21 J E = kT =4.04 ×10-21 J E = 3 k T / 2 = 6.1 ×10-21 J that depends on the mass of the molecule
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