9-14 Using the densities in Appendix A, convert the heats of fusion in Table 9-1 from units of J/cm³ to kJ/kg.
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- (a) What is the physical interpretation of the Grashof number?Draw the different types of grain configurations (by hand) and write their type of burning.Question-6. For solidification of a piece of FCC-metal at 860 °C. The melting point of the metal is 1260 °C. The latent heat of fusion and surface free energy are -2.16 x108 J/m³ and 0.126 J/m², respectively. If nucleation is homogeneous, answer the following questions: (a) Compute the critical radius r* in nm (b) Compute the activation free energy AG* in J (c) If the lattice parameter is 0.26 nm at the melting temperature, compute the number of atoms found in a nucleus of critical size (d) Compute the critical radius at the supercooling degree of 260 K.
- Question 2 What is Kennedy theorem? Please explain Kennedy theorem according to the below picture.Question 1Helium gas is contained in a cylinder by a gas-tight piston which can beassumed to move without friction. The gas occupies a volume of 1 x 10^-3m^3 temperature of 300K and a pressure of 1 x 10^5 Pa.(a) Calculate :i.the number of helium atoms in the container,ii.the total KE of the helium atoms(b) Energy is now supplied to the gas in such a way that the gas expands andthe temperature remains constant at 300K. State, and explain what changes, if any, will have occurred in the following quantities :i. The internal energy of the gasii. The root-mean-square speed of the helium atomsiii. The density of the gas.(Given : Boltzmann's constant = 1.38 x 10^23 JK^-1)9-15 Assume that instead of aspherical nucleus, we have a nucleus in the form of a cube of length x. Calculate the critical dimension x* of the cube necessary for nucleation. Write an equation similar to Equation 9-1 for a cubical nucleus, and derive an expression for x* similar to Equation 9-2.
- Please solve this question. Thank you very muchCalculate the weight fraction for phases at point B? what are those phases? Is there any eutectic rection? How many phases are present in this diagram? Cu-Ni system T(°C) TA 1300 -L (liquid): A tie ļine liquidus L +a Тв EB solidus (solid) 1200 TD ID 20 3032 35: 4043 50 Ca wt% NiThe question is the image, and could you explain to me how to get the answer because the teacher never discusssed this type of exercise in class and i don't know the proccess of solving it
- At what temperature does solidification form at 10% Ni? T(°C) 1600 1500 1400 1300 1200 1100 1000, Answer: L (liquid) L+a solidus liquidus 20 40 60 wt% Ni 86 100A diesel component steel plate has a surface area of 200 in2 with a thickness of 0.002 in. DetermineHow many nickel atoms are required?How many nickel molds are requiredAnswer with brief description is required. Post answer ASAP