Problem 2 A plain-carbon steel contains 93 wt % ferrite and 7 wt % Fe;C. What is its average carbon content in weight percent?
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- when the temperature 300 k, calculated the temperature in F and C?? %3D .A 80F and 27C .B 80.6F and 30C .C 80.6F and 27C .DWhich of the following statements is correct? (1 Point) d. All of these b. Patm = 14.7 psi c. Patm = 100000 bar %3D a. Patm = 101.3kPaDetermine the composition of the Liquid (wt% Sn) for a 40 wt% Sn, 60 wt% Pb alloy at 250°C.
- 4. Through the ideal gas law, compute the following: a. The temperature of a system with a volume of 7L and a pressure of 32 J/m.3- Using the appropriate column interaction diagram below, select the longitudinal reinforcing steel bars for the round spirally-reinforced column shown below if f 4000 psi, fy = 60,000 psi, Pu = 500 k, and M, = 225 ft-k. %3D %3D A 314 in.2 2을 im- - 24 in. 15 in. -20 in.For this question there could be one or MULTIPLE answers, Choose the best Match/Matches. For a monatomic ideal gas in thermal equilibrium near room temperature, a. U = 3/2 NkT. b. U = 5/2 NkT. c. degrees of freedom include translational and rotational motions. d. degrees of freedom include translational, rotational, and vibrational motions. e. U = 5/2 pV. f. U = 3/2 pV. Explain work please.
- 3. In an experiment to determine the thermal conductivity of a bar of a new alloy, one end is maintained at 0C and the other at 100C. The bar has a cross-sectional area of 1cm? and a length of 20cm. If the rate of heat conduction through the bar is 34 Watts, what is the thermal conductivity of the bar? उ 券2. Determine the degree of freedom of NiO-60 mol% Mgo (nod A) for the NiO-Mgo ceramics at 2500°C 2800 L. 2600 2400 L+S 2200 (Ni, Mg)O 2000, NiO 20 80 MgO 40 60 Mole percent MgO Temperature (°C)A hot air balloon uses the principle of buoyancy to create lift. By making the air inside the balloon less dense then the surrounding air, the balloon is able to lift objects many times its own weight. A large hot air balloon has a maximum balloon volume of 2090 m3. a. If the air temperature in the balloon is 54 °C, how much additional mass, in kilograms, can the balloon lift? Assume the molar mass of air is 28.97 g/mol, the air density is 1.20 kg/m3, and the air pressure is 1 atm.
- 4. The density of the most common polymorph of ice is 917 kg/m³. Use the Clausius-Clapeyron relation to explain why the slope of the phase boundary between water and ice is negative. b. How much pressure would you have to put on an ice cube to make it melt at -2° C? а.2. An aluminum alloy sheet 10 cm x 10cm x 2 mm thick having a 0.2%-offset yield strength of 375 MPa is loaded in biaxial tension, o, = 100 MPa and a, 150 MPa. a. Calculate the change in length in the x-direction. b. Calculate the change in length in the y-direction. c. Calculate the change in thickness (2-direction). d. Calculate the change in volume. Give sign and magnitude of the above changes.PERUUS A metal has an initial oxide coating thickness, y, of 60 nm. After 2 hours at 700°C the oxide has grown to a thickness of 80 nm. Assuming a parabolic growth rate law applies, i.e. y² = c t + d (where, t is the time in hours and both c and d are constants) what will be the approximate thickness of the coating after a total of 36 hours at 700°C? 210 nm. 116 nm. O 232 nm. 420 nm. 126 nm. SVOJE VŠET