A uniform supersonic airflow traveling at passes over a wedge (as Figure). An oblique shock, making an angle of 40° with the flow direction, is attached to the wedge under these flow conditions. If the static pressure and temperature in the uniform flow are 20k Pa, -10 °C, respectively. Determine the static pressure and temperature behind the wave, the Mach number of the flow passing over the wedge, and the wedge half-angle.

1. Three devices, X, Y and Z are connected in series to a hydraulic pump. Device X operates at 0.4 MPa, device Y operate at 0.8 MPa and device C operates at 1 MPa. Sketch the arrangement and placed a pressure indicator readings. (CO2,PO2,C3)

2. Three devices, X, Y and Z are connected in parallel to a hydraulic pump. Device X operates at 0.4 MPa, device Y operate at 0.8 MPa and device C operates at 1 MPa. Sketch the arrangement and placed a pressure indicator readings. (CO2,PO2,C3)

Air enters an air-conditioning system that uses refrigerant-134a at 30°C and 70 percent relative humidity at a rate of 4 m3/min. The refrigerant enters the cooling section at 700 kPa with a quality of 20 percent and leaves as saturated vapor. The air is cooled to 20°C at a pressure of 90kPa .

Determine the rate of dehumidification m˙w=   kg/min (Round to five decimal places)

Determine the rate of heat transfer Q˙out= kJ/min (Round to two decimal places)

Determine the mass flow rate of the refrigerant m˙R= kg/min (Round to three decimal places)

n-Octane (C8H18) is burned with 34 percent excess air, with 9 percent of the carbon forming carbon monoxide. Determine the maximum work that can be produced, in kJ/kg fuel, when the air, fuel products are all at 25°C and 1 atm.

I am trying to understand a few injection molding calculations. I will appreciate your assistance.

How do I calculate part weight for plastic injection molding?

Is it mass * density or volume * density?

My part is 29.126 grams and I am using  Polypropylene (PP) which has a density of 0.899 g/cm³ .

Therefore : 29.126 * 0.899= 26.184 grams

To convert to ounce: 26.184* 1/28.3495=0.9236 ounce

Is the above correct?

How do I calculate shot weight?  Please explain clearly and give and example.

How do I calculate core and cavity cost?

I will appreciate a clear and well written explanation because I want to understand how its done.

Thank you

Please refer to the article titled as “Sustainable Construction Excellence for a Better Future in Malaysia, published in The Ingenieur, Vol. 69 January – March 2017 by the Board of Engineers Malaysia.Elaborate on the “Paradigm Shift” which was outlined in the 11th Malaysian Plan and how would it affect our quality of life?

Establish a relationship between atomic structure, crystal structure, imperfections and mechanical properties of materials.

Please write parts and calculation of fresh water generator, elaborate complete......or else just skip it

Thank you

How to make condenser, types of condenser, materials and formulas to find out its properties, please elaborate everything about condenser.

The 40 lb plank A rests on the 30 lb block B as shown in Figure 5. The coefficient of static friction between the plank and the block is μ_AB = 0.35 and between the block and the ground is μ_BD = 0.25. Determine the largest force P that can be applied to the plank without causing motion. Report your answer in lbs but do not enter units. Neglect the thickness of the plank. Consider and show all possibilities of motion.

1. You are to do a preliminary design study for a small demonstration steam turbine power plant.
- Steam will be provided by a small steam generator fired by natural gas.   - Your system will take in steam at 30 bar and 400 oC.
- The steam passes through a two stage turbine. At a pressure of 10 bars, the steam leaves the first stage of the turbine and will pass through a reheat loop in the steam generator which will boost the temperature back up to 400 oC at this pressure. The steam will then enter the second stage of the turbine.
- When the steam leaves the turbine, the quality should be at least 95% at the turbine exit / condenser inlet.
- The design condenser pressure is 0.70 bar.   
- Heat is removed from the condenser and rejected to the environment through a cooling tower.

For the following parts use the design turbine power output of 2.5 kW.
d) What mass flow rate is required? (10 pts)

e) At what rate must heat be produced by natural gas burners in the steam generator to produce the steam at the turbine inlet, and how much heat must be produced to reheat the steam between the stages? For a heating rate range of 950-1150 BTU/scf and a cost of $8 per 100 cubic feet, what is the fuel cost per hour to run this unit? (10 pts)

f) What is the feed water pump power demand, and what is the BWR? (10 pts)

How to make evaporator, types of evaporator, materials and formulas to find out its properties, please elaborate everything about evaporator.

How to make fresh water generator more efficiently, how to start this project and complete, please elaborate step by step.