(a) What is the distinction between hypoeutectoid and hypereutectoid steels?

(b) In a hypoeutectoid steel, both eutectoid and proeutectoid ferrite exist. Explain the difference between them. What will be the carbon concentration in each?

(c) In bullet format compare and contrast the expected mechanical behavior of hypoeutectoid and hypereutectoid steels in terms of: (i) Yield strength (ii) Ductility (iii) Hardness (iv) Tensile strength

Consider the following plane stress state: σx = 30 kpsi, σy = -10 kpsi, τxy = 10 kpsi ccw

Calculate the following:

1. The coordinates of the center of the Mohr's circle C The location of the center of the Mohr's circle C is (____kpsi, ______kpsi).

2. Principal normal stresses (σ1, σ2) The principal normal stresses are σ1 = _____kpsi and σ2 = ______kpsi. ​

3. Maximum shear stress (τ) The maximum shear stress is ______kpsi.

4. The angle from the x axis to σ1 (Φp) The angle from the x axis to σ1 (Φp) is _____° ccw.

5. The angle from the x axis to τ (Φs) The angle from the x axis to τ (Φs) is _______° cw.

6. The radius of the Mohr's circle The radius of the Mohr's circle is ______kpsi.

2.3)  Consider a 3-meter long pendulum placed on the Moon and given initial angular displacement of 0.2 rad and initial velocity of 1 rad/s. Calculate the maximum angular velocity and the maximum angular acceleration of the swinging pendulum (note that gravity on the Earth’s moon is gm=g/6, where g is the acceleration due to gravity on Earth).

For H2O, determine the specific volume at the indicated state, in m3/kg.

(a) T = 480°C, p = 20 MPa.

(b) T = 160°C, p = 20 MPa.

(c) T = 40°C, p = 2 MPa.

Determine whether the following statements are correct (y) or not (n): and explain why..

( ) A system have a higher second law efficiency than the first law efficiency during a process

( ) It is impossible that the energy of one isolated system increases

( ) Adding moisture is the ONLY way to obtain saturated air from unsaturated air

( ) A Piston Cylinder device contains air. During a reversible, isothermal process the entropy of the air will never decrease.

The file CO2.txt, found on Blackboard with this assignment, contains 50 numbers, which represent the concentration of atmospheric carbon dioxide (parts per million) recorded at Mauna Loa, HI. The data in the file are the CO2 values on May 15th of each year from 1961 through 2010, (with background level CO2 removed). Fit an exponential model. Use the model to predict the CO2 value for May 15, 2015. Print the result to the screen using fprintf. The actual value was 125.1ppm.

   41.5800
   42.0100
   43.2500
   43.2400
   43.1600
   45.0100
   46.0000
   46.5700
   48.3400
   49.0700
   49.9200
   51.0700
   53.4800
   54.0900
   54.9700
   55.8700
   57.7500
   59.0100
   60.4700
   62.4600
   63.9100
   65.1400
   66.7500
   68.4300
   69.9300
   71.2100
   72.8400
   75.2200
   76.6700
   78.1600
   80.3400
   80.6600
   81.2800
   82.6800
   84.7900
   86.4100
   87.8000
   90.3000
   92.0000
   92.8200
   95.0200
   96.5500
   99.3500
  101.6100
  103.2400
  105.9400
  107.4300
  109.4900
  111.1800
  114.2200

A gas mixture contains 5 kg of N₂ and 10 kg of O₂. Determine (a) the average molar mass and (b) gas constant. (c) What-if Scenario:What would the average molar mass be if the gas mixture contained 10 kg of N₂ and 5 kg of O₂?

a) ? kg/mol

b)? KJ/kgk

c) ? kg/mol

Identify and describe three automatic control systems in a modern automobile (besides criuse control)

A Carnot heat engine has an ideal efficiency of 34% and produces 25 kW of output power. At what rate (MJ/h) must it discharge heat when operating at full power?

1a. What is thermodynamics system?

b. Briefly explain (i) control mass system

(ii) control volume system

c. Comment briefly on control mass system and control volume system at Steadey state

d.

The inner and outer surface temperatures of a glass window 5 mm thick are 15 and 5°C. The thermal resist- ance of the glass window due to conduction is Rt,cond = 1.19 × 10−3 K/W. What is the rate of heat loss through a 1 m × 3 m window? What is the thermal conductivity of the glass?

Problem 1: For a city at 42 deg N latitude, 93 deg W longitude, determine the Local Civil Time (CT) for the sunset on May 21 for central standard time.

Your company has been awarded a contract for 5-story addition on top of an existing 10-story hospital tower at a Cancer Center located in one of the most populated areas of Dallas, Texas. The existing hospital building is beyond 100% occupancy. The company was hired under a design-build contract to complete the $220 million project. Wind-load testing will be conducted. The wind-resisting system will be modified to redistribute loads on the mat foundation. High-strength concrete will be utilized for the addition's floors and columns (to reduce the load). The new mechanical level will be relocated from an upper floor to the floor just above the hospital's existing roof level. Glass fiber reinforced concrete cladding matching the original building's precast concrete façade (but at about one-quarter the weight) is specified in the design. The duration of the project is three-year.

Can you guys help me find the mechanical and electrical system hazards in this problem?!

And what would be the control strategies for them.