Matlab

Create/write a function that takes an input of x and y data, and a string (either linear? or quadratic), sets up a linear system of equations (Ax = b), and solves and plots the model.

Compute the landing ground roll for the CJ-1, assuming the following landing configuration: • CLmax = 2.4 • Using 100% flap deflection and spoilers at touch-down: • Lift coefficient = 0.4 • Drag coefficient =0.20 • Runway braking friction coefficient = 0.30

CJ-1: Wingspan = 53.3ft, wing are = 138ft^2, Normal gross weight = 19815lb, Fuel capacity: 119 gal of kerosen, power plant: two turbofan engines of 3650lb thrust each at sea level, specific fuel consumption = 0.6lb of fuel/(lb Thrust)(h), parasite drag coefficeint CD,0 = 0.02, Oswald efficiency factor e = 0.81

Prediction: Form a hypothesis addressing: Between water and canola oil, what do the density graphs look like plotted together and how are they related to viscosity? Support your hypothesis with some justification including graphs. Specifically, draw a graph of mass vs. density for the two fluids and the other graph should represent the second question in the best way you can.

2) An Elevator with a mass of 2500 Kg rests at a level 10 m above the base of an elevator shaft. It is raised to 100 m above the base of shaft, where the cable holding it breaks. The elevator falls freely to the base of the shaft and strikes a strong spring. The spring is designed to bring the elevator to rest and to hold the elevator at the position of maximum spring compression. Assuming the entire process to be frictionless, calculate:

a) The potential energy of the elevator in its position relative to the base of the shaft.

b) The work done in raising the elevator.

c) The potential energy of the elevator in its highest position relative to the base of the shaft.

d) The velocity and kinetic energy of the elevator just before it strikes the spring.

e) The potential energy of the compressed spring.

a very thin plastic bottle contains 1.5 litres of water. if the bottle is cooled to 2c in a fridge and then put in a container where it is exposed to a convection environment of T=25c and h=2W/m2K, use the lumped heat analysis capacity analysis to estimate the time for the water to warm up to 15c. assume the bottle has a diameter of 8cms and height of 30cms and that it exchanges heat from its side only. take k=0.6 and c=4190. had the bottle been placed in a convective environment where h=10, would a lumped capacity analysis be justified or not ? give your reasons

A student conducts an experiment boiling water in a 3.96L pot. The Diameter of the base of the pot is 7-3/4” and the height is 5-1/8”.

2 Liters of water @ 23°C takes 11 minutes to boil. 500mL of water at 23°C are added to the boiling water. Producing 3-1/4” height of water and 88°C mixture temperature. It then takes till 11:29 for the water mixture to resume boiling. The whole operation takes 1 hour and 26 minutes from start to the pot boiled dry. How much energy was required for this process?

During isobaric process m=64 kg of wet water stream at temperature t=262.7?C and pressure p=49 bar changed its specific volume from v1 =0.0018 m3/kg to v2=0.035 m3/kg. Find initial and final quality of steam, change of internal energy of steam, work done by steam, amount of heat exchanged with surroundings. Draw the process at the enthalpy-entropy diagram. From tables for p=49 bar: v’=0.0013 m3/kg, v”=0.0403 m3/kg, h’= 1148.4 KJ/kg, h”= 2794.7 KJ/kg

A mass of m=1kg of steam is contained in a closed rigid container. Initially the pressure and temperature of the steam are: p1= 1.5 MPa and t1=240?C, respectively. Then the temperature drops to T2 =100?C as the result of heat transfer to the surroundings. Determine: a) quality of the steam at the end of the process, b) percentage of volume that is occupied by the saturated liquid at the final state, c) heat transfer with the surroundings per unit mass of the system. For: p=1.5 MPa and T1=240?C: h1=2900KJ/kg, v1=0.1483 m3/kg while for T2=100?C: h’=419KJ/kg, v’=0.001043m3/kg and h”=2676 KJ/kg ,v”=1.672 m3/kg.

How does a floating object maintain stability of orientation?

which additive manufacturing technology can incorporate metals?

A rectifier is to be specified for a DN 600 mm pipeline cathodic protection system. The current density required is 1.5 x 10-4 amps/m2. Calculate the current to be supplied by the rectifier if the cathodic protection installations are 30 km apart. POST THE SOLUTION IN NEAT READIBLE SCRIPT PLEASE!!

A venturi is a pipe-like device with a smooth internal constriction, as shown below. Air flows (20 pts) through a particular venturi, entering with know velocity (V~ ), temperature (T), and pressure (P). The venturi starts with a diameter (D), and constricts to a smaller diameter (d). A small barometer-like tube is attached to the venturi at its constriction, and filled with oil of known density (?oil). Answer the following questions about this system using the information in data table. (a) Compute the air’s density (?air) at the venturi inlet. Assume this density is constant and known; it may be used in subsequent questions as such. (b) Develop an expression for the air pressure (Pd) at the venturi’s constriction using only the provided quantities. (c) Develop an expression for the expected oil column height (?z) resulting from the density variation. The oil at the base of the barometer-like tube is also P?. (d) Numerically compute the oil column height (?z) using the derived expressions. Parameter Variable Units Value Venturi diameter D m 0.15 Venturi diameter d m 0.03 Air inlet velocity V m/s 9.3 Air inlet temperature T C 17.5 Air inlet pressure P? kPa 103.0 Air constriction pressure Pd kPa - Air inlet density ?air kg/m3 - Air gas constant Rg J/kg·K 287.057 Oil density ?oil kg/m3 780.0 Oil column height ?z m - Gravity g m/s 2 9.81

Describe the photoelectric effect and explain how XPS is used for chemical analysis. List the similarities and differences between XPS and AES.  

A natural gas well is being drilled in your community. It is estimated that amount of recoverable natural gas is equivalent to 5 MCF and that your community will use this fuel at an initial rate of 0.4 MCF/year, selling an additional 0.6 MCF/year back to the utility. Assuming that the annual rate of increase in consumption will be at 2%, determine how long (in years) it will take to exhaust this natural gas well

Compare extrusion process with rolling process and compare extrusion process with die casting process.