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.

Based on what you learned from the classes and your understanding, summarize how to start a six sigma, and the major steps of a six sigma projects. Briefly discuss the useful tools in the first two phases (D, M). Organize your answer properly and use less than 300 words.

Considering quantitative risk assessment, what is one of the most significant disadvantages to project crashing?

reference to source question https://www.chegg.com/homework-help/questions-and-answers/question-4-production-manager-electronic-toys-company-et-co-begin-project-design-productio-q29681067

This is not an incomplete question it is asking in genereal what is the disadvantages of project crashing. where disadvantages are that it is expensive and can cause failure to activities and effect the whole project. the part i do not understand is answering the question with reference to quantitative risk assessment.

Nitrogen gas is contained in a rigid 1-m3 tank, initially at 5 bar, 300 K. Heat transfer to the contents of the tank occurs until the temperature has increased to 400 K. During the process, a pressure-relief valve allows nitrogen to escape, maintaining constant pressure in the tank. Neglecting kinetic and potential energy effects, and using the ideal gas model with constant specific heats evaluated at 350 K, determine (a) the mass of nitrogen that escapes, in kg, and (b) the amount of energy transfer by heat, in kJ.

(HVAC)

in design of a channel network for distribution of air How and With what equipment the final adjustment of the flow of air reaches to each region is Set?

(HVAC)

For a specific building with a specific user, we have calculated the heating load.

if we use deferent heat provider such as hot water,gas heaters or radiators , would it be a change in calculated heating load?? in other words Is the calculation of heating load independent of the type of heating system?