Numerade

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Seramik boleh ditakrifkan sebagai bahan yang terdiri daripada komponen logam dan bukan logam. Diberi XY ialah seramik hipotesis di mana jejari ionik X+ dan Y ialah 8.61 x 10⁻¹¹ m dan b m, masing-masing. Ambil maklum bahawa simbol X, Y dan Z yang digunakan dalam soalan ini tidak menggambarkan sebatian atau unsur sebenar, dan semua ion dalam soalan ini adalah bercas tunggal. Ceramic can be defined as material that comprised of metallic and non-metallic components. Given XY is a hypothetical ceramic where the ionic radius of X+ and Y⁻ are 8.61 x 10⁻¹¹ m and b m, respectively. Note that symbol X, Y and Z that are used in this question do not reflect the actual compound or element, and all the ions in this question are monocharged. a) Jika daya tarikan antara pasangan ion XY, $F_A = 6.943 \times 10^{-9}$ N, hitung jejari ion bagi anion Y. [Cas elektronik sejagat, $e = 1.602 \times 10^{-19}$ C; kebolehtelapan dalam vakum, $\theta = 8.85 \times 10^{-12} C^2/(Nm^2)$] If the attractive force between the pair of ions XY, $F_A = 6.943 \times 10^{-9}$ N, calculate the ionic radius of anion Y. [Universal electronic charge, $e = 1.602 \times 10^{-19}$ C; permittivity in vacuum, $\theta = 8.85 \times 10^{-12} C^2/(Nm^2)$] (4 markah/marks) b) Memandangkan struktur hablur seramik bukan silikat seperti XY adalah bergantung kepada nisbah kation : anion. Berikan nama dan lakaran struktur hablur XY. Jelaskan jawapan anda. Given the crystalline structure of a non-silicate ceramic such as XY is dependent on the ratio of the cation : anion. Name and illustrate the crystal structure of XY. Explain your answer. (6 markah/marks) c) Kira anggaran faktor pembungkusan seramik XY. Tunjukkan pengiraan yang terlibat dalam jawapan anda. Calculate the estimated packing factor of ceramic XY. Show the calculations involved in your answer. d) Jika anion Y dalam seramik digantikan dengan anion Z, struktur hablur seramik berubah kepada struktur garam batu. Didapati bahawa XY dan XZ mempunyai kekonduksian terma yang berbeza. Terangkan perkara yang boleh menjejaskan kebolehan seramik untuk mengalirkan haba. If anion Y in the ceramic is replaced by anion Z, the crystal structure of the ceramic changes to rock salt structure. It was found that XY and XZ have different thermal conductivity. Explain what could have affected the abilities of the ceramics to conduct heat. (4 markah/marks)

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Marathon Company makes and sells a single product. The current selling price is $18 per unit. Variable expenses are $12 per unit, and fixed expenses total $36,000 per month. (Unless otherwise stated, consider each requirement separately.) Management is considering a change in the sales force compensation plan. Currently each of the firm's two salespeople is paid a salary of $3,000 per month. Calculate the monthly operating income (or loss) that would result from changing the compensation plan to a salary of $500 per month, plus a commission of $1 per unit, assuming a sales volume of 7,200 units per month.Calculate the monthly operating income (or loss) that would result from changing the compensation plan to a salary of $500 per month, plus a commission of $1 per unit, assuming a sales volume of 8,000 units per month.

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Name the 7 functions of the muscular system discussed in lecture which is movement, posture, respiration, production of body heat, communication, constriction of organs & vessels, and contractions of the heart. what muscles are involved, and explain how those muscles participate in each of those functions

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The RNA molecules that carry amino acids to the ribosomes during protein synthesis are called _______. Multiple Choice transfer RNA ribosomal RNA messenger RNA primer RNA ribozymes

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Question 11 Which of the following is NOT a true statement? Pick the FALSE statement! Industrialized nations generally have lower trade barriers than developing countries There have been significant reductions in trade barriers over the last 60 years. Economists generally favor further reductions in trade barriers. There are diminishing returns to trade negotiations. Trade barriers are usually the best way of protecting jobs. Question 12 One reason consumers are unlikely to be too upset about tariffs is that most consumers benefit from protection. most producers benefit from protection. the loss in consumer surplus is subjective and therefore it is not a real loss the gain in producer surplus does not directly concern consumers the costs of protection are so spread out that no one pays a big share of the total 1 pts 1 pts

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You measure a suitcase to be 13 inches wide, 1 foot long, and 8 inches thick. What is the volume of the suitcase? Round your answer to four decimal points.

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Find the volume of the solid obtained by rotating the region bounded by the curves $y = x^3$, $y = 1$, $x = 2$ about $y = -3$. Sketch the region and a typical sample rectangle. Use the washer method.

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Problem 4 (beam deflection) Following the previous problem, an equivalent approach can be formulated in terms of the fourth derivative of deflection as $EI \frac{d^4y}{dx^4} = -w$ For this formulation, four boundary conditions are required. For the supports shown in the figure shown in the previous problem, the conditions are that the end displacements are zero, y(0) = y(L) = 0, and that the end moments are zero, y''(0) = y''(L) = 0. Solve for the deflection of the beam using (a) Shooting method (b) Built-in Matlab functions such as 'bvp4c'. The same parameters are used as in the previous problem. Compare your numerical results with the analytical solution given in the previous problem. Remark: Finite difference method to fourth order BVP is not covered in class as it involves more mathematical treatment of approximation of derivatives and boundary conditions. Optional reading is also uploaded for your references.

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The 12-Kg block starts from rest in the position shown on a frictionless ramp. On the horizontal surface is a rough section. What is the block velocity (m/s with two decimal places) after the rough stretch? Set $L = 8 \text{ m}$, $m = 3$, $\mu_k = 0.16$, and $X = 4 \text{ m}$.

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This is a Python 3 problem. Suppose you are installing a large concrete floor for a new building. The floor has a specific width, length, and height. You need to order several lorries with concrete for this floor. Each lorry can carry a specific amount of concrete. The part of the lorry that holds the concrete is cylinder-shaped. The cylinder's volume is given by the following formula: volume = radius * radius * 3.14159 * length All the lorries of your supplier carry cylinders with the same radius and length. The problem is to write a program that calculates how many lorries you need to order, given the size of the floor (based on its width, length, and height) and the capacity of the lorries (based on the radius and length of the cylinder). Assume that: - The unit used for floor width, length, and height, and the cylinder length and radius is the same. - You can only order lorries that have a cylinder completely filled with concrete. You cannot order a lorry with a cylinder that's only half full. To solve this problem, you will need to round up a number. You can use the function float_rounded_up(): def float_rounded_up(float): """Round up a float to the nearest integer""" integer = int(float) if int(float) != float: integer = int(float + 1) return integer # Add your code here

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