Homework Answers
Material C is more brittle because it needs more energy to break down. Brittle materials have little deformation ,poor capacity to resist impact and vibration of load , high compressive strength and low tensile strength.
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A4. For the materials listed in the table below, which is more Brittle? E (GPa) Gy (M Pa) Efailure B Material A 120...
IV According to the table below, which of the following materials is the most brittle, i.e....
IV According to the table below, which of the following materials is the most brittle, i.e. expands the least before breaking (4 points)? Young's Modulus Ultimate Strength (100 N/m2) 400 50 170 50 Material (10 N/m2) Steel Wood Bone Glass 200 13 65 A. Steel B. Wood C. BoneD. Glass
Problems 9.10. 11. & 12 The stress-strain diagrams for two materials are provided oksi 60 Material...
Problems 9.10. 11. & 12 The stress-strain diagrams for two materials are provided oksi 60 Material A 40 - Material B 0.015 &, in in 0.001 0.006 0.009 Problem 9 Determine modulus of elasticity for material A. a) 0,0001 ksi b) 10,000 ksi c) 29,000 ksi d) 40,000 ksi e) 60,000 ksi Problem 10 What is the modulus of resilience for material B? a) 0.58 kip-in/in b) 0.36 kip-in/in c) 0.18 kip-in/in d) 0.02 kip-in/in e) None of the above...
Q21. Which one of the following statements about the ductility of metals is TRUE? A High ductility occurs in brittle materials B Ductility is the amount of deformation at the 0.2% proof stress C Duct...
Q21. Which one of the following statements about the ductility of metals is TRUE? A High ductility occurs in brittle materials B Ductility is the amount of deformation at the 0.2% proof stress C Ductility can be measured as % reduction in area from broken tensile samples D Ductility is deformation in the elastic region E Ductility is the change between upper and lower yield point in steels Q22. Which one of the following statements is TRUE about Charpy impact...
Consider the figure below. The material is Al, E 69 GPa, p 2700 kg/m3 d2-0.02 m d,-0.01 m b, 0.15 m 0.25 m L-0.4 m a) Calculate the fundamental frequency of the round-sectioned beam using the Ray...
Consider the figure below. The material is Al, E 69 GPa, p 2700 kg/m3 d2-0.02 m d,-0.01 m b, 0.15 m 0.25 m L-0.4 m a) Calculate the fundamental frequency of the round-sectioned beam using the Rayleigh approximation and using W(x) for the first mode of a simple-simple beam. BTW, 1d4/64 b) Calculate the fundamental frequency of a beam with constant diameter di and also with constant diameter d2. Show that the value from part a) lies in between
Consider...
Which of the following is not a strengthening method for crystalline metals? A. Hot-working B. Cold-working....
Which of the following is not a strengthening method for crystalline metals? A. Hot-working B. Cold-working. C. Grain refinement D. Interstitial alloy addition E. None of the above. These are all strengthening methods. A unidirecional composite of 35% by volume Eglans for in apocytsee Table 1)is subjected to a stress of 200 MPa parsial to the fore dinction. The strain in the comples Table 1 pdf 71 kn A 0070 0.000 C 728 OD. 0007 O E 0.004 Table 1...
Material Steel Aluminum Table 1: Properties of Materials ET GI ση ksi TGPaksi GPa Iksi MPa...
Material Steel Aluminum Table 1: Properties of Materials ET GI ση ksi TGPaksi GPa Iksi MPa 107F 107 29(109) 200 11(10) 77 90 600 6.5 12 10(109) 67 3.8(10%) 26 40 270 1 3 2 3 10.28 0.33 Equation Sheet for Midterm Exam 1 -= 7=64 s-les-Et tany z2 = -=[ Er = a(AT) 0 = Eer p = EyL 06 = 0, casº o = 3 (1 + cos 20) == -sin® cos = (sin 20) U =w =...
please show work/give explaination 21 180-120 26-11 * Estimate unit variable cost Month Total costs Activity...
please show work/give explaination
21 180-120 26-11 * Estimate unit variable cost Month Total costs Activity volume in units September $120 October $90 11 0 November - $150 31 December $180 26 H A. not enough information need to know the contribution margin statement in the relevant range B. $3.00/unit C. $4.00/unit D. $4.50/unit E. $6.00/unit Z At current production volume of 1,000 units, variable costs are $6 per unit and fixed costs are $4 per unit, for a total...
Refer to the following figure, stress-strain diagram, for samples of three different materials: A, B, and...
Refer to the following figure, stress-strain diagram,
for samples of three different materials: A, B, and C. The end of
each curve indicates the fracture point.
e) After the conclusion of the tests, if the broken halves of each
sample were fitted back together, which sample would be the
shortest? Assume that all three samples had the same initial
length. f) A circular rod is to be produced, 15 cm long with a
diameter of 5.0 mm. This rod must...
Please choose the correct answer to this materials science question and explain why you chose tha...
Please choose the correct answer to this materials
science question and explain why you chose that answer. I will give
a positive rating if the answer is correct.
Chapter 15, Problem 15.31 Using the table shown below, which of the following polymer(s) would be suitable for the fabrication of cups to contain hot coffee: (a) polyethylene, (b) polypropylene, (c) poly (vinyl chloride), (d) polystyrene, (e) polycarbonate, and (f) PET polyester? Table 11.3 Melting and Glass Transition Temperatures for Some of...
Figure Q1 The jib crane is pinned at A and supports a chain hoist that can travel along the bottom flange of the a) the force in rod BC b) the minimum diameter of rod BC (to the nearest 5 mm)....
Figure Q1 The jib crane is pinned at A and supports a chain hoist that can travel along the bottom flange of the a) the force in rod BC b) the minimum diameter of rod BC (to the nearest 5 mm). c) the minimum diameter of pin B (to the nearest 5 mm). The material properties are listed in Table Q2 and use factor of safety of FS-2 (10 marks) beam boist Figure Q2 Table Q2: Material properties (MPa) Shear...
IV According to the table below, which of the following materials is the most brittle, i.e. expands the least before breaking (4 points)? Young's Modulus Ultimate Strength (100 N/m2) 400 50 170 50 Material (10 N/m2) Steel Wood Bone Glass 200 13 65 A. Steel B. Wood C. BoneD. Glass
Problems 9.10. 11. & 12 The stress-strain diagrams for two materials are provided oksi 60 Material A 40 - Material B 0.015 &, in in 0.001 0.006 0.009 Problem 9 Determine modulus of elasticity for material A. a) 0,0001 ksi b) 10,000 ksi c) 29,000 ksi d) 40,000 ksi e) 60,000 ksi Problem 10 What is the modulus of resilience for material B? a) 0.58 kip-in/in b) 0.36 kip-in/in c) 0.18 kip-in/in d) 0.02 kip-in/in e) None of the above...
Q21. Which one of the following statements about the ductility of metals is TRUE? A High ductility occurs in brittle materials B Ductility is the amount of deformation at the 0.2% proof stress C Ductility can be measured as % reduction in area from broken tensile samples D Ductility is deformation in the elastic region E Ductility is the change between upper and lower yield point in steels Q22. Which one of the following statements is TRUE about Charpy impact...
Consider the figure below. The material is Al, E 69 GPa, p 2700 kg/m3 d2-0.02 m d,-0.01 m b, 0.15 m 0.25 m L-0.4 m a) Calculate the fundamental frequency of the round-sectioned beam using the Rayleigh approximation and using W(x) for the first mode of a simple-simple beam. BTW, 1d4/64 b) Calculate the fundamental frequency of a beam with constant diameter di and also with constant diameter d2. Show that the value from part a) lies in between
Consider...
Which of the following is not a strengthening method for crystalline metals? A. Hot-working B. Cold-working. C. Grain refinement D. Interstitial alloy addition E. None of the above. These are all strengthening methods. A unidirecional composite of 35% by volume Eglans for in apocytsee Table 1)is subjected to a stress of 200 MPa parsial to the fore dinction. The strain in the comples Table 1 pdf 71 kn A 0070 0.000 C 728 OD. 0007 O E 0.004 Table 1...
Material Steel Aluminum Table 1: Properties of Materials ET GI ση ksi TGPaksi GPa Iksi MPa 107F 107 29(109) 200 11(10) 77 90 600 6.5 12 10(109) 67 3.8(10%) 26 40 270 1 3 2 3 10.28 0.33 Equation Sheet for Midterm Exam 1 -= 7=64 s-les-Et tany z2 = -=[ Er = a(AT) 0 = Eer p = EyL 06 = 0, casº o = 3 (1 + cos 20) == -sin® cos = (sin 20) U =w =...
please show work/give explaination
21 180-120 26-11 * Estimate unit variable cost Month Total costs Activity volume in units September $120 October $90 11 0 November - $150 31 December $180 26 H A. not enough information need to know the contribution margin statement in the relevant range B. $3.00/unit C. $4.00/unit D. $4.50/unit E. $6.00/unit Z At current production volume of 1,000 units, variable costs are $6 per unit and fixed costs are $4 per unit, for a total...
Refer to the following figure, stress-strain diagram,
for samples of three different materials: A, B, and C. The end of
each curve indicates the fracture point.
e) After the conclusion of the tests, if the broken halves of each
sample were fitted back together, which sample would be the
shortest? Assume that all three samples had the same initial
length. f) A circular rod is to be produced, 15 cm long with a
diameter of 5.0 mm. This rod must...
Please choose the correct answer to this materials
science question and explain why you chose that answer. I will give
a positive rating if the answer is correct.
Chapter 15, Problem 15.31 Using the table shown below, which of the following polymer(s) would be suitable for the fabrication of cups to contain hot coffee: (a) polyethylene, (b) polypropylene, (c) poly (vinyl chloride), (d) polystyrene, (e) polycarbonate, and (f) PET polyester? Table 11.3 Melting and Glass Transition Temperatures for Some of...
Figure Q1 The jib crane is pinned at A and supports a chain hoist that can travel along the bottom flange of the a) the force in rod BC b) the minimum diameter of rod BC (to the nearest 5 mm). c) the minimum diameter of pin B (to the nearest 5 mm). The material properties are listed in Table Q2 and use factor of safety of FS-2 (10 marks) beam boist Figure Q2 Table Q2: Material properties (MPa) Shear...
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