Consider an alloy of two metals whose thermal conductivities are k1 and k2. Will the thermal conductivity of the alloy be less than k1, greater than k2, or between k1 and k2?

Q: نقطة واحدة Electrical conductivity of .Ceramics is low because they have a wide electron bands. the…

A: Required : Why is the electrical conductivity of ceramic low ..

Q: Two parallel walls 6m apart are stayed together by a steel rod 2.5 cm diameter at a temperature of…

A: Given data:

Q: Why are elemental dopants for Silicon or Germanium usually chosen from group XIII or group XV?

A: The elemental dopants for silicon or germanium is usually chosen from group XIII or group XV

Q: Consult Table 1 and rank the densities of the following materials from greatest to least: a. Liquid…

A:

Q: A metal is heated up to a temperature°C. It is then exposed to a temperature of 38°C. After 2…

A: Given that:- T0=Surrounding temperature=380 CTi=Initial temperature of the bodyk=constantT=Temp. at…

Q: What is the identity of a 100g sample of metal that, upon absorbing 900 J of heat, increases in…

A: Using the equation for the heat required to increase the temperature, Q=mc∆Tc=Qm∆T

Q: What is known as ideal mixture ?

A: Required : What is ideal mixture

Q: What factors affect the melting point of a metal?

A: The factor the affect the melting point of a metal is the attractive force between the molecules…

Q: Does the “gas” of freely moving electrons in a metal include all the electrons present? If not,…

A: In a metal electrons free when there is any possibility of electron flow due to external agents or…

Q: What physical property of a metal is preferred when making musical instruments? a) Ductile b)…

A: Answer:       Sonorous property.

Q: An ideal gas cannot be: A) liquified B) solidified C) Both A & B D) None of the above

A: An ideal gas is defined as the gases which have elastic collisions between their molecules and there…

Q: One component of a metal sculpture consists of a solid cube with an edge of length 0.203 m. The…

A: Given data :             Side length of cube, L = 0.203 m             Density of the material , ρ =…

Q: a specimen of an alloy of silver and gold whose densities are 10.50 and 18.90g/cm³ respectively…

A: Fluids are the materials that have the property of being able to flow. This property is attributed…

Q: Graphite has hexagonal crystal lattice which contains four atoms per unit cell at positions of (0 0…

A: GIVEN: The four positions are ( 0 0 0), (1/3 2/3 0), (0 0 1/2) and (2/3 1/3 1/2).

Q: A sample of copper has a mass of 0.31 kg, a specific heat of 385, and an initial temperature of 97.0…

A: Given information:

Q: A cube of each of the following that measures 2.36cm on a side is brought from 5.7 oC to 28.3 oC…

A: Given: The side of the cube is 2.36 cm. The initial temperature of the cube is 5.7 °C. The final…

Q: The melting point of titanium is 1668°C which is equivalent to .. Kelvin. 1394.85 K 1941.15 K 1668 K…

A:

Q: The edge length of a unit cell of a crystal is 4.3 Angstrom and an atomic mass of 90 g/mol. If the…

A: The edge length of a unit cell of a crystal is 4.3 Angstrom and an atomic mass of 90 g/mol. If the…

Q: Why do metals feel cold even when they are at room temperature?

A: Metals feel cold

Q: To produce alloy metals, the components are heated to a molten state, mixed, and then cooled. The…

A: When we look around us, we see lots of changes happening in our day-to-day life. When we leave a…

Q: Super Invar, an alloy of iron and nickel, is a strong material with a very low coefficient of…

A: Given : α = 0.2 × 10-6(°C)-1 Lo = 2 m ∆T = 5°C

Q: The movement of solid molecules are freer than liquid * False True

A: No, the solid molecules are tightly packed compared to liquid, molecules in…

Q: when solid melts it _____. A. gain heat and its temperature decreases B. gains heat and its…

A: gaining of heat to the substance makes solid melts so option c was wrong  temperature decrease is…

Q: The best fluidity is obtained by metals that are high melting temperature. O eutectic alloys only O…

A: The fluidity of pure metals are better than their alloys. The eutectic alloys, characterized by low…

Q: Lead is a soft, dense metal with a specific heat of 0.028 kcal/kg°C, a melting point of 328.0°C, and…

A: In first step  Heat required from 25°C solid to 328°C solid Q= ms∆T S = specific heat m= mass ∆T =…

Q: A sample of pure iron has a mass of 13.8 g. Calculate the number of moles in the sample and iron…

A:

Q: One component of a metal sculpture consists of a solid cube with an edge of length 0.263 m. The…

A: Given:- Edge of cube = 0.263 m = 26.3 cm density of cube = 6530 kg/m3

Q: The cavity within a copper [β = 51 × 10-6 (C°)-1] sphere has a volume of 1.200 × 10-3 m3. Into this…

A: The change in the units volume of material when temperature changes is given by…

Q: A two-component mixture is made up of components A and B with nA=0.11ng. If a small change in…

A: In the given question, We have to calculate the value of change μB.

Q: A tray contains 390g of ice. How much energy will be required to melt it to water? O 36.2 kcal 34.2…

A: 31.2 kcal is correct answer.

Q: The following information is given for nickel at latm: boiling point = 2732 °C AHvap(2732 °C) = 379…

A: As we know -  Molar mass of Ni = 58.69 gmol Therefore,  Mole of Ni = Mass of NiMolar mass Given…

Q: A metal with high hardness will generally have: O A. high yield strength O B. low modulus of…

A: Given : A metal have a high hardness

Q: sample of 1 mol Ar and 1 mol Kr gas is at 298 O the same average kinetic energy O the same rate of…

A: Kinetic theory of gases relates the macroscopic property of the gas, like Temperature, Pressure,…

Q: Metals can be given different shapes according to our needs because they posses the properties of:…

A: Metals can be given different shapes according to our needs because they posses the properties of…

Q: Speaio Heat (calipc) Sutstance Conductivity (cais omG') 0.0015 Water ALmum Copper 1.000 0.215 0.092…

A: Specific heat is defined as the heat energy required to raise the temperature of a material by 10C.…

Q: (SOLUTION IS REQUIRED) The average surface temperature of a metal sphere is 700 °C. If the metal…

A: Given:  Temperature T = 700°CPower radiated P = 220 WattsArea A = 4πr2 To Find: Radius of the sphere…

Q: The active element of a certain laser is made of a glass rod 30cm long and 1.5 cm in diameter.assume…

A: Length of the glass rod, Lo=30 cm=30×10-2 m Diameter of the tube, Do=1.5×10-2 m Therefore, radius…

Q: Diamond does not conduct electricity, because   A) It's structure is very compact B) It is of…

A:

Q: A 75-g somple of siicon is at 31 Degree Cetius. 750 Cal of energy is transterred to this somple. The…

A: Given data:  Mass (m) = 75 g Initial temperature (Ti) = 31 °C Energy (E) = 750 cal Specific heat…

Q: A sample of copper has a mass of 0.490 kg, a specific heat of 385, and an initial temperature of…

A:

Q: The resistive element method cannot be used to vaporize two materials of similar melting points. * O…

A: First of all we have to know the what is resistive element. Resistive element is the element in…

Q: A bimetallic strip is made up of welded together. a. two different metals thatexpand and contract…

A: The strips consist of the strips of different metals which expands at a different rate as they are…

Q: The metal molybdenum becomes superconducting at temperatures below 0.90 K. Calculate the temperature…

A: