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The permeability of free space () units is .......... |
manetic field due to circular coil
B=μ₀I/2R
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- Can anyone help me with this questionProblem # 3 (a) Describe the forces responsible for formation of inert gas (such as Argon) crystals. Express the cohesive energy (U(R)) of such crystals as a function of interatomic distance R, and sketch U(R) vs R. (b) Evaluate the Madelung constant for a one-dimensional lattice of Na* and Cl ions. The distance between two nearest neighbor Na* and Cl ions is R. (c) For H2 one finds from measurements on the gas that the Lennard – Jones parameters are ɛ = 40 x 10-16 erg and o = 2.91 Ả. Find the cohesive energy in kJ per mole of H2. Assume that the H2 molecules for an fcc lattice. Treat each H2 molecule as a sphere.The molecules in a six-particle gas have velocities v₁ = (20î - 30) m/s v₂ = (40î +90) m/s V3 = (-802 +205) m/s V4 = 30î m/s V5 (402-405) m/s = v₁ = (-50-403) m/s Part A Calculate Vavg- Express the x and y components of the velocity in meters per second separated by a comma. Uz avg, Uy avg 0,0 m/s Submit ✓ Correct Part B Previous Answers Calculate Vavg- Express your answer with the appropriate units. Vavg0 Submit μA 6 m S 2 Previous Answers Request Answer ? X Incorrect; Try Again; 5 attempts remaining
- Match the following states to the correct descri22) There are three separate containers. One contains a monatomic gas, another one a diatomic gas with vibrational modes frozen, and the third a solid. There is one mole of each substance. If you add the same amount of heat to each container, rank from least to most the change of temperature of each substance. A: solid, monatomic gas, diatomic gas B: monatomic gas, diatomic gas, solid C: solid, diatomic gas, monatomic gas D: diatomic gas, monatomic gas, solid E: monatomic gas, solid, diatomic gas12-Prove that the variation of E as a function of L is given by the following graphic. What is the benefit when reducing the dimension of active material in devices? Emisson Energy E Width of QW L
- Constants One way to improve insulation in windows is to fill a sealed space between two glass panes with a gas that has a lower thermal conductivity than that of air. The thermal conductivity k of a gas depends on its molar heat capacity Cy , molar mass M, and molecular radius r. The dependence on those quantities at a given temperature is approximated by k o Cv/r2 VM. The noble gases have properties that make them particularly good choices as insulating gases. Noble gases range from helium (molar mass 4.0 g/mol, molecular radius 0.13 nm) to xenon (molar mass 131 g/mol, molecular radius 0.22 nm). (The noble gas radon is heavier than xenon, but radon is radioactive and so is not suitable for this purpose.) Part A What is one reason the noble gases are preferable to air (which is mostly nitrogen and oxygen) as an insulating material? Noble gases are monatomic, so no rotational modes contribute to their molar heat capacity. noble gases are monatomic, so they have lower molecular masses…Electronics Physics -HW2 QI. In a P-type germanium, ni = 2×10" electrons/m and the density of boron 4x1023 atoms/m'. The electrons and holes mobility are (0.4 and 0.2 m/ V. s) respectively. What is its conductivity before and after addition of boron atoms? Note: For after addition of boron atoms you need to compare the actual and approximate conductivity ملاحظة: بعد اضافة ذرات البورون يكون حساب التوصيليه بالاستخدام التقريب وبدون استخدام التقريب والمقارنة بين النتائج(i) What is the most likely speed for a molecule of mass 'm' at room temperature T in a 3D space? (ii) What is the most likely speed for a molecule of mass 'm' at room temperature T in a 2D space? (iii) What are the physical origins of the differences between the most likely speed in 3D and in 2D? (iv) Why two identical ideal gas molecules in a room kept at constant temperature may move at different speeds?
- 4) A surface with No adsorption centers has N (S N,) gas molecules adsorbed on it. Show that the chemical potential of the adsorbed molecules is given by u = kTIn- N (No-N)a(T) where a(T) is the partition function of a single adsorbed molecule. Solve the problem by constructing the grand partition function as well as the partition function of the system. [Neglect the intermolecular interaction among the adsorbed molecules.]Define the term RMS Speed of a Molecule?MYWCC Course Home ge.com/course.html?courseld3D16169958&HepID=a52ff7e49b4dfe2f223be43660b2c382#10001 ROP Engineering Physics 1 Hi, Kelvin v Sign Out H Course Home KHW10 Problem 7.43 <) 14 of 21 <. I Review | Constants A 2.2 kg piece of wood slides on the surface shown in the figure (Figure 1). The curved sides are perfectly smooth, but the rough horizontal bottom is 35 m long and has a kinetic friction coefficient of 0.30 with the Where will this wood eventually come to rest? Express your answer in meters. wood. The piece of wood starts from rest 4.0 m above the rough bottom. S = Figure < 1 of 1 Submit Request Answer Part B For the motion from the initial release until the piece of wood comes to rest, what is the total amount of work done by friction? Express your answer in joules. Wood V ΑΣΦ Rough bottom W = J %3D Submit Request Answer 1:2 10/26