Concept explainers
The population data for a certain country are given here.
Plot the data and obtain a function that describes the data. Estimate when the population will be double its 2005 size.
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System Dynamics
- Supercomp Ltd produces two computer models PC1086 and PC1186. The matrix A shows the cost per computer (in thousands of dollars) and B the production figures for the year 2010 (in multiples of 10,000 units.) Find a matrix C that shows the shareholders the cost per quarter (in millions of dollars) for raw material, labor, and miscellaneous. Quarter 1 2 3 4 PC1086 PC186 1.2 1.6 Raw Components 3 8 6 9 B PC1086 0.3 0.4 Labor 6 2 4 3 PC1186 0.5 0.6 Miscellaneousarrow_forwardYou have the six pieces of metal listed below plus a beaker of water containing 400. g of water. The water temperature is 21.0 °C. Metals Specific Heat (J/g. K) Mass (g) 1. Al 0.9002 100. 2. Al 3. Au 4. Au 5. Zn 6. Zn 0.9002 0.1289 0.1289 0.3860 0.3860 50. 100. 50. 100. 50. The specific heat capacity of water is 4.184 J/g °C.arrow_forwardConsider the following data with reference to elementary deterministic economic order quantity model Annual demand of an item 100000 Unit price of the item (in Rs.) 10 Inventory carrying cost per unit per year (in Rs.) 1.5 Unit order cost (in Rs.) 30 The total number of economic orders per year to meet the annual demand isarrow_forward
- Question: a student has chosen the particular weight of 1.373 kg for gear and optimised is by getting the following plot. Taking into consideration these points. A) comment on the plot? B) why high contact stiffness ratio is important and high mesh as well? Contact stiffness 23.0 21.0 19.0 17.0 15.0 23 57 $2189 Normal module [mm] 4.600 82 79 72 2.862 67 61 62 42931 2325 53120 30 32 2627 54 18 21 ql0991 63 1.125 13.0 1.000 1.100 1.200 1.300 Total contact ratio 1.400 1.500 1.600 1.700arrow_forwardQ8): To find how much heat is required to bring a kettle of water to its boiling point, you are asked to calculate the specific heat of water at 61°C. The specific heat of water is given as a function of time in Table below. Temperature, T Specific heat, C₂ (°C) J kg-°C 22 42 52 82 100 4181 4179 4186 4199 4217 Determine the value of the specific heat at 7=61°C using the direct T method of interpolation and a third order polynomial. Find the absolute relative approximate error for the third order polynomial approximation (Lagrange Method).arrow_forwardForest Fires and Acres Burned Numbers (in thousands) of forest fires over the year and the number (in hundred thousands) of acres burned for 6 recent years are shown. The regression line equation is y'=-18.779+0.761x. The standard error of the estimate is sest 9.55. Find the 80% interval when x=60. Round intermediate answers to three decimal places. Round your final answers to two decimal places as needed. Number of fires x 58 47 84 62 57 45 Number of acres burned y 19 26 51 15 30 15 Send data to Excel One can be 80% confident that the intervalarrow_forwardGiven the following Atmospheric Data: Altitude (m) Pressure (kPa)0 - 101.331000 - 89.872000 - 79.503000 - 70.114000 - 61.66 Use linear interpolation to estimate the atmospheric pressure at: Altitude (m) Pressure (kPa)4MM ?2689 ?3500 ? (where MM is your birth month, so if you were born in December, evaluate at 312 meters)arrow_forwardQ2: File Upload الزامي ABET äbäi 15 solve the question on a piece of [Q2] paper and upload it as ONE FILE here .{as an image or PDF only} Question 2 Use the least square regression to fit the data in the following table to the equation yfit = ae*. 1.5 2 y 1.6 3.7 7 13.5 24.6 1 2.5 (A) Determine the values of a and 3. (B) What is the standard error of this estimation? (C) Using the fit equation, what the value of y at r = 2.25? إضافة ملفarrow_forwardThe orthographic views of an object are shown below. a) Draw its isometric drawing using a pencil. Provide all important dimensions on your isometric drawing. b) You need to take pictures of all main steps and need to provide a step-by-step method to draw isometric drawing accompanied by pictures. 307303030 | 20 60 15 15 55 30 20 60 + 27.5 4 25 47.5 25 R20 20 T 15 60 016 120 R30 120 120 30arrow_forwardSuppose you make the following sequence of measurements for the segments in laying out a compressed air line: 4.61 m 211 m 0.500 m What should be the reported total length of the air line? options: 216.1 216.110 220 216.11 216arrow_forwardThe heat flux (q) can be computed with Fourier's law Where q has units of W/m2 and k is the thermal conductivity of the material (W/m.K). T: temperature (K) and x = distance (m) along the path of heat flow. Determine at each point for the following data using the best finite divided approximation formulas. x (cm) T (K)| 10 800 15 760 25 630 35 480 370 40 300 55 200 70arrow_forward1) Graph 1: plot t on the abscissa versus y on the ordinate and (artistically) draw a smooth line through the points. The line need not actually go through each data point. 2) Graph 2: plot t^2 on the abscissa versus y on the ordinate and then perform a linear regression. Remember to plot both the raw data points and the line of best fit (with the two points used to draw it); also show the regression equation and r value on the graph. 3) On graph (1), what does the slope of the line tell you about the velocity of the ball? Be thorough! 4) On graph 2: a) What does the slope of the line tell you about the acceleration of the ball? Be thorough! b) Calculate g from the freefall data and the % error (in comparison to 9.81 m/s^2) using the results from the linear regression calculation. c) What do the values of the y-intercept and correlation coefficient (r) tell you?arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
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