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All changes saved A 10. Quintin is performing an experiment to test whether colder temperatures reduce the amount of friction between a block of Ice and a sheet of metal. Which of the following is the Independent varilable in Quintin's experiment? O friction O materials used O welght of the ice O temperature PREVIOUS 10 of 10 NEXT REVIEW SAVE & EXIT hp esc @ 23 24 % * 1 2 3 4 6. 7 8

Select atleast two testing devices from among the categories (you may go beyond two). Discuss its application and methods of use. a. testing for speed (Tachometer), b. Testing of Air Consumption (Air-box method/viscous-flow meter), c. testing of exhaust smoke (Bosch/Hartridge/PHS), d. testing of exhaust emission (flame ionization detector/spectroscopic analyzers/gas chromatography) e. testing of torque (absorption dynamometer/transmission dynamometer).

Question 2 In a test measuring the life span of a certain brand of tire, 100 tires are tested. The results showed an average lifetime of 50,000 miles, with a standard deviation of 5,000 miles. One hundred thousand of these tires have been sold and are on the road. (a) After what mileage would you expect 10% of the tires to have worn out? (b) How many tires are expected to wear out between 60,000 and 70,000 miles? (c) How many tires are expected to have a life of less than 20,000 miles? (d) What are your major assumptions in the calculations for (a), (b) and (c)? (e) Estimate the 95% confidence interval on the population mean.

TRUE OR FALSE 1.) In rheology, food materials of higher viscosity have higher resistance to flow. 2.) Specific heat is the amount of heat needed to raise the temperature of a unit mass of an object one degree higher without change of phase 3.) Surface area, is related to size but also depends on particle shape. 4.) Size can be correlated with weight given that the material has more or less uniform composition. 5.) Latent heat of fusion is the amount of heat that must be removed to convert water to ice and is also the same as the amount of heat added to convert ice to water.

O True O False QUESTION 3 Compute the expected properties of modulus of elasticity (Ec) of a composite made from S-glass fibers and a Polyester matrix. The volume fraction of fibers is 30%. (Unit is psi.) Properties of Sample Matrix and Filler Materials Tensile strength Tఅబండి Specific weight bai MPa 10 psi GPa Iblin Matrix materials: Polyester Ероху Aluminum 10 18 45 69 124 310 1170 0.40 0.56 10.0 165 2.76 3.86 69 114 0.047 12.7 0.047 12.7 0.100 0.160 27.1 Titanium Filler materials: 170 43.4 S-glass Carbon-PAN Carbon-PAN (high-strength) Carbon (high-modulus) Aramid 600 470 4140 3240 5650 2200 3450 12.5 33.5 40 100 86.2 231 276 690 131 0.09 0.064 24.4 17.4 17.7 820 325 500 0రవ 0.078 0.052 21.2 19.0 14.1 Click Save and Submit to save and submit. Click Save All Answers to save all answers. earch

00 T R %24 Bb R V qa du/webapps/assessment/take/launch.jsp?course_assessment_id%=_254968_1&course_id%3D 3565256_1&content id= 52826 * Question Completion Status: Attach File Browse Local Files Browse Content Collection QUESTION 2 A company needs to choose one supplier for a particular type of silicon wafer used'in the production of semiconductors. The company has three options. Supplier A sells the silicon wafers for $2.50 per wafer, independently of the number of wafers ordered. Supplier B sells the wafers for $2.40 each but does not consider an order for less than 2,000 wafers. Supplier C sells the wafers for $2.30 each but does not accept an order for less than 3,000 wafers. Assume an order setup cost of $100 and an annual requirement of 20,000 wafers. Assume a 20% annual interest rate for holding cost calculations. a. Which supplier should be chosen to minimize the total annual cost for the wafers, and what is the optimal order quantity? b. If the replenishment lead time for wafers…

Record the dimensions of the known (calibration) block using the caliper and dial gauge on the table below. Indicate the units of each measurement. Calculate the average length of each side of the block. Dimension Caliper (Units) 0.995 1.455 0.985 Ruler(in) A: 0.9 B: 1.5 C: 0.9 A B C Dimension A B Instrument Use the average dimensions (see Problem 2a) of the known block to calibrate the LVDT at your workstation. Record the voltage on the table below: LVDT Offset: 0.556 (Do not include the offset value in your average dimensions) C Ave Dimension (Units) (Dial Gauge) 0.997 1.659 0.949 0.964 in 1.538 in 0.945 in oltage Average Dimension 1.244 volt 1.994 1.28 0.964 in 1.538 in 0.945 in

Presented below are the quality ratings with regard to soil moisture availability. Erosion rating Moisture rating Erosion Rating MC (%) Rating Slope Slope rating Rating hazard class Low 1 0-5 4 0-5 1 Moderate 2 5-15 3 5-10 2 High 3 15-20 2 10-25 3 Very high 4 >20 1 >25 4 Quality ratings of three land units are tabulated below. Land quality rating Land unit Nutrient availability Trafficability 1 2 1 2 3 1 3 2 2 Additional characteristics of the land units areas follows: Land Permeability Land use M.C. Slope Clay V. Silt OM Structure % % Fine % % unit sand % 1 2 Slow Moderate Rangeland Arable 10 9 40% 10 30 4 blocky 18 8 30% 20 20 2 Coarse granular 3 Moderate to Settled 22 12 20% 15 50 3 Fine rapid granular Suitability Class Nutrient The suitability rating for land qualities for tomatoes and cabbage production is also indicated below; Suitability classes for Tomato production Trafficability Moisture Land Qualities Slope Erosion availability hazard S1 1 2 2 2 2 S2 2 3 3 2 S3 3 4 3 3 4 S4…

Please answer within one hr i will give good rating.

Question 2 You are a biomedical engineer working for a small orthopaedic firm that fabricates rectangular shaped fracture fixation plates from titanium alloy (model = "Ti Fix-It") materials. A recent clinical report documents some problems with the plates implanted into fractured limbs. Specifically, some plates have become permanently bent while patients are in rehab and doing partial weight bearing activities. Your boss asks you to review the technical report that was generated by the previous test engineer (whose job you now have!) and used to verify the design. The brief report states the following... "Ti Fix-It plates were manufactured from Ti-6Al-4V (grade 5) and machined into solid 150 mm long beams with a 4 mm thick and 15 mm wide cross section. Each Ti Fix-It plate was loaded in equilibrium in a 4-point bending test (set-up configuration is provided in drawing below), with an applied load of 1000N. The maximum stress in this set-up was less than the yield stress for the…

What is the shape factor F12 for the situation shown in Fig. 1 below ?

This is Engineering Data Analysis

This is for Water resources Engineering, the Table from the book is posted along with the question. Thank you.

A new electronic component for aircraft is tested to withstand temperatures as low as -50°F. One engineer suggests that the device cannot actually stand temperatures that low. What are the Type I and Type II errors? Type I: The device CAN NOT withstand temperatures as low as -50F but the engineer incorrectly finds that it CAN.Type II: The device CAN withstand temperatures as low as -50F but the engineer incorrectly finds that it CAN NOT.   Type I: The device CAN withstand temperatures as low as -50F but the engineer incorrectly finds that it CAN NOT.Type II: The device CAN NOT withstand temperatures as low as -50F but the engineer incorrectly finds that it CAN.    Is the answer the first or second bullet point?

B.How does the color of t-shirt you wear affect its temperature? te three variations of the independent variable below. IF THEN BECAUSE (Write a SPECIFIC action you can do) (Make a prediction about what you are measuring) (Reason why from your knowledge/research)

The elastic region of a materials stress strain graph is shown below. Determine the Modulus of Elasticity from the graph data then select the correct modulus in the choices below.        20,000,000 psi     30,000,000 psi     40,000,000 psi     5,000,000 psi

QUESTION 7 The heat evolved in calories per gram of a cement mixture is approximately normally distributed. The mean is thought to be 100, and the standard deviation is 2. You wish to test Ho: μ =100 versus H₁: μ #100 with a sample of n=9 specimens. If the acceptance region is defined as 98.5 ≤x≤ 101.5, f Find ß for the case in which the true mean heat evolved is 103 O a.0.5 b. 0.0244 O c.0.9878 O d. 0.0122

University of Babylon Collage of Engineering\Al-Musayab Department of Automobile Engineering Under Grad/Third stage Notes: 1-Attempt Four Questions. 2- Q4 Must be Answered 3-Assume any missing data. 4 تسلم الأسئلة بعد الامتحان مع الدفتر Subject: Mechanical Element Design I Date: 2022\01\25 2022-2023 Time: Three Hours Course 1 Attempt 1 Q1/ Design a thin cylindrical pressure tank (pressure vessel) with hemispherical ends to the automotive industry, shown in figure I below. Design for an infinite life by finding the appropriate thickness of the vessel to carry a sinusoidal pressure varied from {(-0.1) to (6) Mpa}. The vessel is made from Stainless Steel Alloy-Type 316 sheet annealed. The operating temperature is 80 C° and the dimeter of the cylinder is 36 cm. use a safety factor of 1.8. Fig. 1 (15 Marks) Q2/ Answer the following: 1- Derive the design equation for the direct evaluation of the diameter of a shaft to a desired fatigue safety factor, if the shaft subjected to both fluctuated…

Do not provide handwritten solution,Maintain accuracy and quality in your answer,Take care of plagiarism,Answer completely,You will get up vote for sure.

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Exercise 4.4: Seven students measured the length of a rod to be as shown below: Student No. 1 4 6. 7 Length (cm) 87.5 87.3 87.4 87.6 87.8 87.2 87.1 (a) What is the best estimate for the length of the rod? (b) What is the sample standard deviation in the length of the rod? (c) What will be the uncertainty in the length of the rod?