Lab 10 report

3. Examine your data in Data Table 2 and in Data Table 3. For the data with the smallest percentage difference, compare the total energy at each point. Calculate the sum U₁+Ug at x₁ as ½kx-mgx₁. Calculate that sum at x₂ as ½kx²-mgx₂. Do you expect them to agree reasonably well? Explain why they should or should not be the same. 4. Consider the same data as used in Question 3. Calculate the value of x halfway between x₁ and x₂. Calculate U₁+Ug=½kx² − mgx_for_that point. Do you expect them to agree with the energy calculated in Question 3? If they agree reasonably well, explain why they do. If they do not agree, explain why they do not agree.

1- Select the optimum choice for: high speed air craft skins material. Table 1: The properties of metallic materials E, GPa Max. use lemp, 'C | Density, Mg/cm' ay, MPa | Relative cost per unit sheet area Material 2.8 300 2 Aluminum alloy 200 69 200 7,8 350 350 700 Carbon steel Stainless steel 193 7.8 650 6 8.9 600 6 Nickel alloy Titanium alloy 207 1000 116 600 4.5 900 10 Table 2: Weighting factor Specific yield strength: Max, use temperature: Youngs modulus: 4 2

At a pressure of 0.01 atm, determine (a) the melting temperature for ice, and (b) the boiling temperature for water. You might want to use Animated Figure. (a) i °C (b) і °C

7. Repeat the experiment using a second and third rod of different material. Data Table: T; °C Lo m Aluminum 0.30 Material AL m T; °C AT °C 5.44 x 10-4 24.6 100.2 0.29 4.21 x 10-4 23.5 99.9 Brass 0.30 3.83 х 104 25.0 100 Copper Data Analysis Table Experimental a Accepted a /°C 24 x 10-6 Material Error % Aluminum 19 х 106 Brass 17x 10-6 Сopper

The following table lists temperatures and specific volumes of water vapor at two pressures: p = 1.0 MPa p = 1.5 MPa T (°C) v(m³/kg) T (°C) v(m³/kg) 200 0.2060 200 0.1325 0.1483 0.1627 0.2275 240 280 240 280 0.2480 Data encountered in solving problems often do not fall exactly on the grid of values provided by property tables, and linear interpolation between adjacent table entries becomes necessary. Using the data provided here, estimate i. the specific volume at T = 240 °C, p = 1.25 MPa, in m³/kg the temperature at p = 1.5 MPa, v = 0.1555 m³/kg, in °C the specific volume at T = 220 °C, p = 1.4 MPa, in m³/kg ii. iii. 11.

Go Tools Window Help A Screen Shot 2021-10-30 at 6.12.39 AM Edited Q Sea A- Exercise Consider the following readings in a reactor: table of data representing temperature Thermocouple 1 Thermocouple 2 Thermocouple 3 84.3 86.4 90.0 85.2 87.1 83.5 89.5 88.6 88.9 88.9 86.7 87.6 88.3 85.3 80.3 84.8 90.4 82.4 85.0 85.3 85.3 85 2 82.3 84.7 83.6 89.3 83.4 85.4 89.5 88.9 89.1 86.3 85.3 89.0 87.3 87.2 89.5 89.4 89.8 (a) The maximum temperature measured by each thermocouple. (b) The minimum temperature measured by each thermocouple. oct 30 Ctv

4. Referring to the property table below for saturated liquid, using linear interpolation to determine the following values: a. Pat T = 94°C b. U at P = 0.4285 bar C. vat U= 315.67 kJ/kg Internal Energy, Specific Volume, v x 10 (m*/kg) U ("C) (bar) (kJ/kg) 0.3858 1.0259 313.90 75 80 0.4739 1.0291 334.86 85 0.5783 1.0325 355.84 90 0.7014 1.0360 376.85 95 0.8455 1.0397 397.88 100 1.014 1.0435 418.94

Question 8 and 9

Which of the following does not correctly represent a dependent and independent relationship? a. Independent variable:Time of day Dependent variable: Outside temperature b. Independent variable:Number of gallons of gas in a car’s tank Dependent variable: Number of miles a car can be c. Independent variable:Number of coins put into a gumball machine Dependent variable: Number of gumballs d. Independent variable: Pace of a runner in a race Dependent variable: Time it takes to complete the race

plz ansswer q1 part e velocity is in km/h  not in m/s

Estimate the thermal properties of a food with the following composition: carbohydrate 17.1%, protein 2.1%, fat 0.1%, ash 0.9%, humidity 79.8%. a. Specific heat is based on the Siebel = Answer equation kJ / kg ° C. b. Specific heat is based on the Charm = Answer equation kJ / kg ° C. c. Specific heat is based on the Heldman & Singh = Answer equation kJ / kg ° C. d. Specific heat is based on the Choi & Okos = Answer equation kJ / kg ° C. e. Heat conductivity based on the equation Sweat = Answer W / m ° C. f. Heat conductivity based on the Choi & Okos = Answer equation W / m ° C. g. Heat diffusivity based on the Choi & Okos = Answer equation m² / s

Project 1 100 20. 150 200 250 300 350 400 450 500 550 600 650 CUPONTHFC-134a 700 200. 0.0016 1- 00018 10. Pressure-Enthalpy 0.0014 000124 0.0020 8. 0.0030 100. 80. 6. Diagram volume-0.0040 mikg (SI Units) 0.0060 0 0080 0.010 60. 40. 2. 0.015 0 020 20. 0030 0.8 0.040 10. 8. 0.6 0.060 0.4 6. 0 080 010 0.2 0.15 020 2. 0.1 0.08 0.30 0.40 1. 0.8 0.06 060 0.04 0.6 O80 1.0 0.4 0.02 1.5 20 0.2 0.01 100 150 200 250 300 350 400 450 0.1 700 500 550 600 650 Enthalpy (kJ/kg) Refrigerant HFC-134a as the working fluid - Ideal cycle operation condition is assumed Cycle is operated at high pressure line of 0.8 MPa Cycle is operated at low temperature line of – 10° C - Flow rate is 0.1 kg/sec The head of the department in the company that you are working in asked you to make use of pressure - enthalpy chart provided for HFC-134a refrigerant a. Construct didactic sketches, showing the operating principles of a refrigeration system Pressure (bar) 4. -Dozz -auneadu H 061 ta 091 Ti 1000 06 0 - --- 99'O 09…

For this question there could be one or MULTIPLE answers, Choose the best Match/Matches. Isothermic process occurs? 1) without work W 2) at constant temperature T 3)without heat transfer Q. 4)at constant volume V. 5)occurs at constant pressure p. Explain work please and thank you!

A silver cube with an edge length of 2.24 cm and a gold Substance Specific heat (J/g.°C) Density (g/cm³) cube with an edge length of 2.63 cm are both heated to gold 0.1256 19.3 84.8 °C and placed in 115.0 mL of water at 20.5 °C . silver 0.2386 10.5 What is the final temperature of the water when thermal water 4.184 1.00 equilibrium is reached? Tinal

The figure below provides steady-state operating data for an ideal vapor-compression refrigeration cycle with Refrigerant 134a as the working fluid. The mass flow rate of refrigerant is 30.59 lb/min. State 3 Expansion valve -4 Hot region 5 Cout Condenser Compressor mi = 30.59 Evaporator Oin Cold region lb min W р T h S (lbf/in.2) (°F) (Btu/lb) (Btu/lb.°R)

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