engineering problem. Match the RTT term with its explanation: A: ddt(∫CVβρdᏉ) B: ∫CSβρVcosθdAout C: ∫CSβρVcosθdAi
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Need help with engineering problem.
Match the RTT term with its explanation:
A: ddt(∫CVβρdᏉ)
B: ∫CSβρVcosθdAout
C: ∫CSβρVcosθdAin
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- The drag on an airplane wing in flight is known to be a function of the density of air (), the viscosity of air(), the free-stream velocity (U), a characteristic dimension of the wing (s), and the shear stress on the surface of the wing (s). Show that the dimensionless drag, sU2, can be expressed as a function of the Reynolds number, Us.The below results are for cooling tower expirement, energy balance :energy balance of the system, that is to say, the energy taken by the air must be equal to the energy supplied by the water flow. Question : Discuss the tabulated cooling tower results... Discuss in detail format!Completely solve and box the final answers. Write legibly 4. A single stage air compressor handles 30 cubic meter per minute of atmospheric pressure, 30°C air and delivers it to a receiver at 3.0 mpa. Its volumetric efficiency is 83.0%, compression efficiency of 83.0% and mechanical efficiency of 80.30%. If it rotates at 300 rpm, what power in kW is required to drive it?
- The speed of sound traveling through the sea is a function of temperature, salinity, and pressure. It is modeled by the function C = 1449.2 + 4.67T -0.055T² +0.00029T³ + (1.34-0.01T) (S-35) + 0.016D where C is the speed of sound (in meters per second), T is the temperature (in degrees Celsius), S is the salinity (the concentration of salts in parts per thousand, which means grams of dissolved solids per 1000 grams of water), and D is the depth below the sea surface, in meters. Calculate the following (Check attached image d3) when T = 10 °C, S = 35 parts per thousand, and D = 100 m. Explain the physical meaning of these derivatives.7. Two parallel plates separated by 15.5 cm move with a relative velocity of 7 m/s. How much force per unit area is required to maintain the velocity difference if the fluid separating the plates is (a) water with µ = 1 cP (b) SAE 30 motor oil with µ = 200 cP and (c) honey with µ = 10,000 cP?Saponification is a process wherein soap is added to a certain type of oil to produce grease. One such grease is said to have 75.7 % by volume oil and 24.3% by volume soap, wherein the oil and soap have densities 760 kgm/m3 and 6,250 kgm/m3, respectively. This kind of grease is sold by packs shaped like a sphere with a diameter of 20 cm for convenience. Calculate: a) the mass of oil per pack (kgm), b) the mass of soap per pack (kgm), c) the weight of each pack (kgf), d) the specific weight of grease (N/m3), e) will the grease float if it is placed in water whose density is 1000 kgm/m3? Explain.
- Given that a particular gas has the following data:• pressure is 101.325 kPa,• temperature is 16°C, and• volume is 2.83 m³and these are compressed into a storage vessel of 0.31 m³ capacity.Before admittance, the storage vessel contained the gas has the following data:• pressure is 137.8 kPa, and• temperature is at 24°C.After admittance, the pressure has risen to 1171.8 kPa.Determine the final temperature of the gas in the vessel (in Kelvin)Suppose we got the following data during a test of a 2- stroke engine in which gas is usedas a fuel:Diameter of the piston = 149 mmStroke length = 179 mmClearance volume = 0.88 literrpm of the engine = 302Indicated mean effective pressure = 6.0 barGas consumption = 6.0 m3/hCalorific value of the gas (fuel) = 16990 kJ/m3Make a clear sketch the geometry of this engine using the data and determine thefollowing:i. Indicated power developed by the engine in watt.ii. Air Standard Efficiencyiii. Indicated thermal efficiency of the engine.The following data are given for a biogas digester suitable for the output of six cows. The volume of digester is 8.3 m3 , the volume of gas holder is 2.2 m3 and the retention time is 22 days. Find the height of gas holder in centimeter.
- The horizontal force due to water acting on the bolt (Fh): Fh=ρ×A1×V1×V1--V2 Fh=1000×π4×0.0752×1.254×1.254+11.286( Fh)=69.472 This is the only part I did not understand how to get. Can you please explain more? I arrived with this equation, -P1A1 - P2A2 (cancelled since atmos. Pres.) +Fh = rho A1v1 (v2-v1) Why did P1A1 disappear in your solution? How did you come up with (v1 - - v2) ? What is the control volume? Why did you not do a summation of forces is equal to change in momentum but instead go immediately to getting the horizontal force acting on the bolt?ENGINEERING MECHANICS II Impulse and momentum 2.) Consider the fig. below: Hint… use the law of conservation of Impulse and momentum to solve this problemEngineering economics Investing in Electrical Efficiency Two pumps capable of delivering 100 hp to an agricultural application are being evaluated in a present economy study. The selected pump will only be utilized for one year, and it will have no market value at the end of the year. Pertinent data are summarized as follows: ABC Pump XYZ PumpPurchase price $2,900 $6,200Maintenance cost $170 $510Efficiency 80% 90% If electric power costs $0.10 per kWh and the pump will be operated 4,000 hours per year, which pump should be chosen? Recall that 1 hp = 0.746 kW. Choose XYZ because it provides least cost.