Polymers has the higher heat capacity values than that of other materials
option 3 is correct
a) Which one of the following materials has the highest heat capacity? (3 points) 1) Metals...
Questionl: Explain four basic classes of solid materials MCQ Question 2: Which of the following is true for polymers? a) They have very high molecular mass b) They do not have linear stress-strain curve c) They have high strength to mass ratio d) All of the mentioned Question 3: Ceramics make excellent refractory materials. A material is said to be refractory if it: a) resists the flow of electric current b) has high refractive index c) retains its strength at...
Materials selection for light springs is shown in Figure 3. A family of lines of slope 2 link materials with equal values of Specific modulus specific strength Technical ceramics Melals and polymers yield sirength, ey Ceramics. glasses: modulus of rupture, MOR Elastomers: tensile tear strength, Composites: tensile failure, o Diamond 8,c SigN Al203 10-1 Composites Yield before 10 Siica glass Soda gass CFRP bucking Nontechnical ceramics Stone Brick Ti alloy CD 10-2 nMetals Wood ng alloys Search area Yield strein...
Questions: 1. Which of the following metals is a better conductor of heat; Al with a specific heat of 0.91 J/gºC or cast iron with a specific heat of 0.46 Jlg°C? 2. The specific heat of acetone is 2.18 J/gºC and the specific heat of water is 4.18 J/gºC. Two pieces of iron of equal mass were heated to 100°C. One was plunged into water at room temperature and one was plunged into acetone at room temperature. Which liquid would...
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...
QUESTION 1 A semi-crystalline nylon with a degree of crystallinity of 25% has a density of 1.5 g/cm^3. Nylon has a crystalline density of 1.8 g/cm^3. What is its amorphous density in grams per centimeters cubed? 1 points QUESTION 2 Which defect is NOT common between metals and polymers? tie molecules vacancies screw dislocations interstitial defects 0.5 points QUESTION 3 Which one is not a characteristic of a plastic polymer? a. Low stress but very large strains b. Tensile strength...
Q11. 6 points Please Compare thermoplastic and thermosetting polymers (a) on the basis of mechanical characteristics upon heating and (b) according to possible molecular structures. (c) what type of polymer material, thermosetting or thermoplastic, you might select for the following applications: a surgeon’s glove, a beverage container, and a pulley. Q12. 3 points How do the glass-transition temperatures of polyethylene, polypropylene, and polymethyl methacrylate compare? Explain their differences, based on the structure of the monomer of each. Q14. 4 points...
please answer highest buffering capacity Which of the following has the highest buffering capacity? O 1 L of 0.9 M CO32- and 0.1 M HCO3- 1 L of 0.1 M CO32- and 0.9 M HCO3- 1 L of 0.9 M CO32- and 0.9 M HCO3- 1 L of 0.1 M CO32- and 0.1 M HCO3
which of the following has the highest buffer capacity? A 0.10M H2PO4-/0.10M HPO4 -2 B 0.50 M H2PO4-/0.10 M HPO 2- C 0.10 M H2PO4-/0.50 M HPO4 2- D 0.50 M H2PO4-/0.50M HPO4 2- E They all hae the same buffer capacity. There is a group of us working together.
please answer all of the questions below: .Stay Home- Mobily 8:23 AM 82% Question 1 Strong and ductile materials Metals Polymers Ceramics © Ceramics Semiconductors Question 2 Presently most used metal in the world Gold Silver o Aluminium Steel Question 3 Question 3 First metal known to be used by man Iron ( 1 ) Bronze Aluminium Silver Question Question 4 Pick the composite from the list Cement Nylon CFRP Steel Question 5 First material known to be used by...
Which of the following regions of the electromagnetic spectrum has the highest frequency? Select one: A. Visible light B. Microwaves C. Infrared radiation D. Ultraviolet radiation onization energy is the energy required to add an electron to an atom in the gaseous state. Select one: True False In the Bohr model of the atom, the greatest energy would be emitted if an electron relaxed from the n = 5 orbit to which orbit? Select one: A. n = 2 B....