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You are 28 years old. You plan to save for your retirement between now and age 65 (when you retire). You would like your savings to finance a retirement income of $65,000 per year (at the end of the...
You can purchase a new duplex for $2,000,000. The bank has quoted her an 75% LTV. The loan would be amortized for 30 years, the annual interest rate is 5.5%. The annual NOI is $175,000. Determine the...
The Cabinet Shoppe is considering the addition of a new line of kitchen cabinets to its current product lines. Expected cost and revenue data for the new cabinets are provided below: Annual sales...
A firm's stock sells for $25.00 and they recently declared a dividend of $1.25 per share. Their long term growth rate is 2.5%. What is the stock's expected dividend yield for the Not yet coming year?
A recently declared a dividend of $1.75, which is expected to growth at a constant 3.6%. If you could purchase the shares for $32.00, what rate of return could you earn?
Crude oil has a storage cost equivalent to 8 per cent per year for all maturities. The spot price of crude oil is $100 per barrel and the 6 and 12 months prices for futures contracts on crude oil are...
If you want to invest in a portfolio that consists from two assets, stock X as 70% from this investment and stock Z as 30%. The expected rate of return on share X is 15% and for Z is 9%, the standard...
According to the theory of strength, the bending moment of the hyperstatic beam at the central support is Mt = 27.5625 MNm . Solve the support reactions of the beam and draw the bending moment...
Vulcan Company's contribution format Income statement for June is as follows: Vulcan Company Income Statement For the Month Ended June 30 Sales Variable expenses Contribution margin Fixed expenses...
Convers Corporation (calendar year-end) acquired the following assets during the current tax year: (ignore 179 expense and bonus depreciation for this problem): (Use MACRS Table 1, Table 2, and Table...
If i have two samples of concrete that have the same mix proportions, but different absorptions of sand (1.8% for sample A and 2.8% for sample B), theoretically which sample of concrete will have...
Consider the soil profile shown in Figure E3-2. The moist unit weight of the top sand layer is 20.0 kN/m. Capillary rise is present above the groundwater table. The saturated unit weights of clay 1...
Sheridan Company purchases $46,000 of raw materials on account, and it incurs $55,200 of factory labor costs. Supporting records show that (a) the Assembly Department used $22,080 of direct materials...
On 8 February 19X8 PJ, a London trader, consigned 120 cases of goods to MB, an agent in New Zealand. The cost of the goods was 25 a case. PJ paid carriage to the port 147 and insurance 93. On 31...
Given: Permeability, k = 40 x 104 cm/s Saturated unit weight of the soil = 20 kN/m Other information shown in the Figure E3-3 Determine the following: (a) Quantity of Discharge (b) Total vertical...
You need to calculate the stock price (per share) of RSM, a financial company. RSM has just paid $3 per share in dividends. You estimate that dividends will grow at 20% per year for the next three...
What are the possible advantages and disadvantages of technology in the process of recruitment. How can we make the use of technology more effective in the recruitment of employees?
Pina is a manufacturer with a purpose: it creates durable, yet affordable, duffel bags with many functional pockets and accessories to encourage people of all ages to travel. In the process of making...
what did you discover as you completed the holding on and letting go matrix ? In what ways could you minimize the positive reasons for holding on ? in what ways could you strengthen the advantages of...
CIVE 421: Reinforced Concrete Design Summer 2 2023 2nd Exam - Open Book Open Notes 1. Shear and moment design problem - continuous beam span As2 Section 2 Section 1 Wu As2 Asl L = 24 ft Only moment...
Identify the main principles of discrimination law in recruitment and selection and in employment.
The coefficient of kinetic friction between the 14-kg box and the inclined surface is zero when it is subjected to a constant horizontal force F = 20N. What is the velocity v of the box 2 seconds...
Dorothy Deng is a successful real estate mogul in Upstate New York. She owns a number of properties, both commercial and residential and all for rent. One property in particular on the East side of...
Background: Tension in the courtroom increased during the bail hearing as the case of Ms. Freasse, a young teenager involved in legal proceedings because of an incident on July 8, 2022, was examined....
Fluid mechanics NUMERICAL PROBLEMS (4 X 3 = 12 Points) Q1. An oil flows through 50.0 m of cast iron pipe having a diameter of 0.25 m. If the volumetric flow is 0.40 m^3/s, determine the head loss in...
Sam Green was riding his bicycle along a road that was under construction; although he was riding against traffic instead of with traffic as required by law, he was off the pavement at the time...
The decision by Attorney General Jeff Sessions to revive some of the toughest practices of the "war on drugs" can have both positive and negative impacts on the correctional system and sustainable...
A community's social capital plays an important role in how effective local governments and community-based organizations work together toward common goals. In short, What are ways in which a local...
You need to take an Excel course. You may enroll in one within your school or you may take a community class at the local library. You've gathered the following information to aid in your...
The chief financial officer of a hospital wants to evaluate the year-to-year change in expenses by area. What areas had the highest and lowest growth, and what recommendations would you give the CFO...
Can you comment to these two posts of my classmates its discussion questions and i need to comment in two of them? To me, what makes someone beautiful changes in stages. My first initial perception...
George was working at a grocery store, ABC Grocery, on a beautiful Monday morning. As he was stocking some shelves, he saw his former high school enemy, Claire. She was shopping at the store. George...
We've been reviewing the duty to treat and the duty of care. I'd like to take a couple of minutes to review that section so that hopefully you have it all down. And then we'll move on to the issue of...
A race car team would like to assess the performance of its rear wheel drive vehicle though simulation on the track shown. The car and driver mass is 2000 Kg and the coefficient of kinetic friction...
X 2) Determine the vector moment, M, (in units of ft lbs) on the 8.5 foot beam about the origin as a result of the force F = 250 i + 175 j - 150 k (lbs) acting on it as shown. N 35 y F
3) Determine the magnitude of the moment of the force F about a) the x-axis, b) the y-axis, and c) the z-axes. 3 ft 4 ft 2 ft C B F= {41+ 12j3k}lb
4) Determine the support reactions for the system shown. There is a pin at A and a roller at B. The external force of 1000 N is applied at x = 2 meters. A F = 1000 N 4 meters B
These are the pieces you must choose from to summarize and comment on in your essay: "EEOC v. Madison Community Unit School District (No. 12 818 F.2d 577 (7th Cir. 1987))" "Sandor v. Safe Horizon,...
When you are calculating the percent complete for an entire project, more than one answer might be possible. The project manager says the percent complete is about 60%, the cost engineer says it is...
A, B, C and D allegedly rob a Town Bank, which is located in the city of Cape Town. Members of the South African Police Services (SAPS) are called to the scene of the crime, during which a shoot-out...
Need help expanding the questions below. State of Ohio's position on the ban? What legislation if any supports or opposes the ban and or tries to protect smokers in the workplace? How smoking in...
A ray of light is traveling from water (n = 1.33) into an unknown substance. The angle of incidence at the boundary is 35 degrees and the refracted angle is 52 degrees. A) Calculate the index of...
A house painter uses the chair and pulley arrangement of the figure to lift himself up the side of a house. the painter's mass is 72 kg and the chair's mass is 12 kg. With what force must he pull...
Dr. Mars has a mass of 75 kg and weighs 735 N or 165 lbs on the Earth. a) What is his weight in N and lbs on Jupiter where the acceleration due to gravity is 24.8 m/s2? b) If he weighs 63.1 lbs on...
Leo and Elizabeth were getting married and planned a wedding reception for 150 people. They entered a contract with Snuffy's, a banquet hall, to hold the reception between 6:00 p.m. and 11:00 p.m. on...
Consider a spherical bacterium, with radius 1.4 m , falling in water at 20 C. Find the terminal speed of the spherical bacterium in meters per second, ignoring the buoyant force on the bacterium and...
Calculate C in the units of d 2 /AU 3 for each orbital body listed in this table. Use the formula T 2 = Ca 3 and the proper number of significant digits in your value for C. The first one has been...
Ursula, Wendy, Xavier, Yvonne, and Zack, a group of first year law students decided to throw a party in their house to celebrate passing their exams. The following events took place: (a) Wendy was in...
A rock is thrown at a 95.0 angle above the horizontal across level ground. It is thrown from a height of 3.00 m above the ground with a speed of 23.0 m/s and experiences no appreciable air...
Module 3 included an overview of the different and various legal remedies that are available to both the seller (lessor) and the buyer (lessee) in the event of breach of a sales (lease) contract. The...
Address all aspects of the project thoroughly and to the best of your ability. Feel free to consult and cite the Textbook: Davenport, Annekin U. (2018). Basic Criminal Law: The Constitution,...
A car with an initial speed 7.7 m/s speeds up at a uniform 0.73 m/s^2. It travels 1.055km while accelerating. 1. How fast in m/s is the car moving just as it is traveled the 1.055 km? 2. How many...
This week's discussion and readings on the legal, ethical, and privacy aspects associated with cyber intelligence operations highlight some interesting challenges. Cyber intelligence operations must...
A rectangular barge, 5.8 mm long and 2.0 mm wide, floats in fresh water. Suppose that a 360-kg crate of auto parts is loaded onto the barge. How much deeper does the barge float? Express your answer...
A 5,900-kg truck runs into the rear of a 1,000-kg car that was stationary. The truck and car are locked together after the collision and move with speed 3 m/s. Compute how much kinetic energy was...
a) Calculate the rotational kinetic energy (in J) of Jupiter on its axis. (Assume its mass to be 1.90 1027 kg, the period about its axis to be 9.84 h, and its diameter to be 1.43 105 km.) (b)What is...
One capital investment that State Insurance Company Limited might need to secure financing for in the coming fiscal year is the purchase of a new claims processing system. The estimated cost of the...
Managing costs is a crucial aspect of ensuring the long-term financial stability of an organization. In this regard, it is essential to clearly understand the differences between fixed, mixed, and...
A soft tennis ball is dropped onto a hard floor from a height of 1.95 m and rebounds to a height of 1.56 m. (Assume that the positive direction is upward.) (a)Calculate its velocity (in m/s) just...
Leilani works in Tech's apparel store during Sock 4. On Thursday, she moves a 86.5-N crate of Spartan wear across the floor at a constant speed by pulling with a force of 49.2 N at an angle of 24.3...
What is the pressure drop associated with water at \(27^{\circ} \mathrm{C}\) flowing with a mean velocity of \(0.1 \mathrm{~m} / \mathrm{s}\) through an \(800-\mathrm{m}-\) long cast iron pipe of...
Water at \(35^{\circ} \mathrm{C}\) is pumped through a horizontal, \(200-\mathrm{m}\)-long, \(30-\mathrm{mm}\)-diameter tube at \(0.25 \mathrm{~kg} / \mathrm{s}\). Over time, a 2-mm-thick layer of...
Fully developed conditions are known to exist for water flowing through a \(50-\mathrm{mm}\)-diameter tube at \(0.02 \mathrm{~kg} / \mathrm{s}\) and \(27^{\circ} \mathrm{C}\). What is the maximum...
Compressed air at \(p=20\) atm enters a \(20-\mathrm{mm}\) diameter tube at \(T_{m, i}=20^{\circ} \mathrm{C}\) and a mass flow rate of \(\dot{m}=6 \times 10^{-4} \mathrm{~kg} / \mathrm{s}\). The air...
Liquid mercury at \(0.25 \mathrm{~kg} / \mathrm{s}\) is to be heated from 325 to \(375 \mathrm{~K}\) by passing it through a \(25-\mathrm{mm}\)-diameter tube whose surface is maintained at \(400...
\(\mathrm{NaK}(56 \% / 44 \%)\), which is an alloy of sodium and potassium, is used to cool fast neutron nuclear reactors. The NaK flows at a rate of \(\dot{m}=0.8 \mathrm{~kg} / \mathrm{s}\) through...
An oil preheater consists of a single tube of \(10-\mathrm{mm}\) diameter and 5-m length, with its surface maintained at \(180^{\circ} \mathrm{C}\) by swirling combustion gases. The engine oil (new)...
Heated air required for a food-drying process is generated by passing ambient air at \(20^{\circ} \mathrm{C}\) through long, circular tubes \((D=50 \mathrm{~mm}, L=5 \mathrm{~m}\) ) housed in a steam...
Consider the conditions associated with the hot water pipe of Problem 7.42, but now account for the convection resistance associated with water flow at a mean velocity of \(u_{m}=0.4 \mathrm{~m} /...
Dry, compressed air at \(T_{m, i}=55^{\circ} \mathrm{C}, p=15 \mathrm{~atm}\), with a mass flow rate of \(\dot{m}=0.05 \mathrm{~kg} / \mathrm{s}\), enters a \(50-\mathrm{mm}-\) diameter,...
Air at \(p=1 \mathrm{~atm}\) enters a thin-walled \((D=10-\mathrm{mm}\) diameter) long tube \((L=2 \mathrm{~m})\) at an inlet temperature of \(T_{m, i}=100^{\circ} \mathrm{C}\). A constant heat flux...
Fluid enters a tube with a flow rate of \(0.020 \mathrm{~kg} / \mathrm{s}\) and an inlet temperature of \(20^{\circ} \mathrm{C}\). The tube, which has a length of \(8 \mathrm{~m}\) and diameter of...
Dry, compressed air at \(T_{m, i}=75^{\circ} \mathrm{C}, p=10 \mathrm{~atm}\), with a mass flow rate of \(\dot{m}=0.001 \mathrm{~kg} / \mathrm{s}\), enters a \(30-\mathrm{mm}-\) diameter, 5 -m-long...
Air at \(1 \mathrm{~atm}\) and \(310 \mathrm{~K}\) enters a 2 -m-long rectangular duct with cross section \(80 \mathrm{~mm} \times 160 \mathrm{~mm}\). The duct is maintained at a constant surface...
Air at \(4 \times 10^{-4} \mathrm{~kg} / \mathrm{s}\) and \(20^{\circ} \mathrm{C}\) enters a rectangular duct that is \(1 \mathrm{~m}\) long and \(4 \mathrm{~mm} \times 16 \mathrm{~mm}\) on a side. A...
A thin-walled, uninsulated 0.4-m-diameter duct is used to route chilled air at \(0.07 \mathrm{~kg} / \mathrm{s}\) through the attic of a large commercial building. The attic air is at \(37^{\circ}...
Oil at \(150^{\circ} \mathrm{C}\) flows slowly through a long, thin-walled pipe of 35-mm inner diameter. The pipe is suspended in a room for which the air temperature is \(25^{\circ} \mathrm{C}\) and...
Refrigerant-134a is being transported at \(0.08 \mathrm{~kg} / \mathrm{s}\) through a Teflon tube of inside diameter \(D_{i}=20 \mathrm{~mm}\) and outside diameter \(D_{o}=25 \mathrm{~mm}\), while...
Rectangular flow channels are formed by milling long rectangular slots into flat metal plates, and brazing the plates together as shown below. Either large channels (Configuration A) or twice as many...
Water at \(290 \mathrm{~K}\) and \(0.25 \mathrm{~kg} / \mathrm{s}\) flows through a Teflon tube \((k=0.35 \mathrm{~W} / \mathrm{m} \cdot \mathrm{K})\) of inner and outer radii equal to 10 and \(14...
A thin-walled tube with a diameter of \(12 \mathrm{~mm}\) and length of \(25 \mathrm{~m}\) is used to carry exhaust gas from a smoke stack to the laboratory in a nearby building for analysis. The gas...
Repeat Problem 8.52 for a circular tube of diameter \(D=2 \mathrm{~mm}\), an applied heat flux of \(q^{\prime \prime}=200,000 \mathrm{~W} / \mathrm{m}^{2}\), and a mass flow rate of \(\dot{m}=10...
Consider an object of characteristic length \(0.015 \mathrm{~m}\) and a situation for which the temperature difference is \(10^{\circ} \mathrm{C}\). Evaluating thermophysical properties at the...
An object of characteristic length \(L=0.5 \mathrm{~m}\) is \(10^{\circ} \mathrm{C}\) warmer than the surrounding fluid, which is flowing at a velocity of \(0.5 \mathrm{~m} / \mathrm{s}\). Graph the...
What is the convection mass transfer coefficient associated with fully developed atmospheric airflow at \(27^{\circ} \mathrm{C}\) and \(0.04 \mathrm{~kg} / \mathrm{s}\) through a...
An ideal gas flows within a small diameter tube. Derive an expression for the transition density of the gas \(ho_{c}\) below which microscale effects must be accounted for. Express your result in...
Consider a concentric tube annulus for which the inner and outer diameters are 25 and \(50 \mathrm{~mm}\). Water enters the annular region at \(0.03 \mathrm{~kg} / \mathrm{s}\) and \(25^{\circ}...
Consider a large vertical plate with a uniform surface temperature of \(100^{\circ} \mathrm{C}\) suspended in quiescent air at \(25^{\circ} \mathrm{C}\) and atmospheric pressure. (a) Estimate the...
Air is forced through holes that are bored through a 0.5-m-thick block of solid (of molecular weight \(95 \mathrm{~kg} / \mathrm{kmol}\) ) that sublimates into the flowing air. Consider air at \(320...
For the conditions of Problem 8.70, how long must the annulus be if the water flow rate is \(0.35 \mathrm{~kg} / \mathrm{s}\) instead of \(0.02 \mathrm{~kg} / \mathrm{s}\) ? Data From Problem 8.70:-...
A square aluminum plate \(5 \mathrm{~mm}\) thick and \(150 \mathrm{~mm}\) on a side is heated while vertically suspended in quiescent air at \(75^{\circ} \mathrm{C}\). Determine the average heat...
A number of thin plates are to be cooled by vertically suspending them in a water bath at a temperature of \(20^{\circ} \mathrm{C}\). If the plates are initially at \(60^{\circ} \mathrm{C}\) and are...
During a winter day, the window of a patio door with a height of \(1.8 \mathrm{~m}\) and width of \(1.0 \mathrm{~m}\) shows a frost line near its base. The room wall and air temperatures are...
Show that the laminar, free convection correlations for a vertical, isothermal flat plate of height \(L\) can be applied to a vertical, isothermal cylinder of diameter \(D\) and height \(L\) if the...
Consider a vertical plate of dimension \(0.25 \mathrm{~m} \times 0.50\mathrm{~m}\) that is at \(T_{s}=100^{\circ} \mathrm{C}\) in a quiescent environment at \(T_{\infty}=\) \(20^{\circ} \mathrm{C}\)....
For laminar free convection flow on a vertical plate, the recommended values of \(C\) and \(n\) for use in the correlation of Equation 9.24 are 0.59 and 1/4, respectively. Derive the values of \(C\)...
A horizontal uninsulated steam pipe passes through a large room whose walls and ambient air are at \(300 \mathrm{~K}\). The pipe of \(125-\mathrm{mm}\) diameter has an emissivity of 0.85 and an outer...
A hot, 0.5-m-diameter, 35 -mm-thick aluminum alloy disk is quenched from an initial temperature of \(T_{i}=\) \(400^{\circ} \mathrm{C}\) in a large oil bath of temperature \(T_{\infty}=35^{\circ}...
An electrical heater in the form of a horizontal disk of \(500-\mathrm{mm}\) diameter is used to heat the bottom of a tank filled with engine oil at a temperature of \(10^{\circ} \mathrm{C}\)....
The concept of a critical insulation radius was introduced in Example 3.6. Consider the thin-walled copper tube and insulation of the example. Now, the tube temperature is \(-10^{\circ} \mathrm{C}\)...
Consider Problem 8.38. A more realistic solution would account for the resistance to heat transfer due to free convection in the paraffin during melting. Assuming the tube surface to have a uniform...
A long, uninsulated steam line with a diameter of \(100 \mathrm{~mm}\) and a surface emissivity of 0.8 transports steam at \(150^{\circ} \mathrm{C}\) and is exposed to atmospheric air and large...
As discussed in Section 5.2, the lumped capacitance approximation may be applied if \(B_{i} <0.1\), and, when implemented in a conservative fashion for a long cylinder, the characteristic length is...
Consider a horizontal 5-mm-thick, 100-mm-long straight fin fabricated from plain carbon steel \((k=57\) \(\mathrm{W} / \mathrm{m} \cdot \mathrm{K}, \varepsilon=0.5)\). The base of the fin is...
A \(205 \mathrm{~mm} \times 245 \mathrm{~mm}\) sheet of wetted fabric is hung up to dry on a warm, sunny day. The still air is at a temperature of \(30^{\circ} \mathrm{C}\) and relative humidity of...
A horizontal, 25-mm-diameter cylinder is maintained at a uniform surface temperature of \(35^{\circ} \mathrm{C}\). Air at atmospheric pressure with a velocity of \(0.10 \mathrm{~m} / \mathrm{s}\) and...
According to experimental results for parallel airflow over a uniform temperature, heated vertical plate, the effect of free convection on the heat transfer convection coefficient will be \(5 \%\)...
A solar collector design consists of an inner tube enclosed concentrically in an outer tube that is transparent to solar radiation. The tubes are thin walled with inner and outer diameters of 0.08...
A sphere of \(30-\mathrm{mm}\) diameter contains an embedded electrical heater. Calculate the power required to maintain the surface temperature at \(89^{\circ} \mathrm{C}\) when the sphere is...
Graph the heat loss per unit length from the solar collector of Problem 9.76 over the range \(0.1 \leq D_{o} \leq 0.25\mathrm{~m}\) assuming (i) conduction heat transfer across the annular space and...
The front door of a dishwasher of width \(580 \mathrm{~mm}\) has a vertical air vent that is \(500 \mathrm{~mm}\) in height with a \(20-\mathrm{mm}\) spacing between the inner tub operating at...
Determined to reduce the \(\$ 7\) per week cost associated with heat loss through their patio window by convection and radiation, the tenants of Problem 9.15 cover the inside of the window with a...
A fan that can provide air speeds up to \(30 \mathrm{~m} / \mathrm{s}\) is to be used in a low-speed wind tunnel with atmospheric air at \(23^{\circ} \mathrm{C}\). If one wishes to use the wind...
A flat plate is of planar dimension \(1 \mathrm{~m} \times 0.75\mathrm{~m}\). For parallel laminar flow over the plate, calculate the ratio of the average heat transfer coefficients over the entire...
Water at a temperature of \(T_{\infty}=25^{\circ} \mathrm{C}\) flows over one of the surfaces of a stainless steel wall (AISI 302) whose temperature is \(T_{s, 1}=40^{\circ} \mathrm{C}\). The wall is...
Consider the conditions of Example 6.4. A laminar boundary layer can be tripped to a turbulent condition at \(x=x_{r}\) by roughening the surface of the plate at \(x_{r}\). Calculate the minimum and...
Helium at a free stream temperature of \(T_{\infty}=25^{\circ} \mathrm{C}\) is in parallel flow over a flat plate of length \(L=3 \mathrm{~m}\) and temperature \(T_{s}=85^{\circ} \mathrm{C}\)....
A concentrating solar collector consists of a parabolic reflector and a collector tube of diameter \(D\), through which flows a working fluid that is heated with concentrated solar irradiation....
Laminar flow normally persists on a smooth flat plate until a critical Reynolds number value is reached. However, the flow can be tripped to a turbulent state by adding roughness to the leading edge...
On a very still morning, the surface temperature of a lake used to cool the condenser of a power plant is \(30^{\circ} \mathrm{C}\) while the air temperature is \(23^{\circ} \mathrm{C}\) with a...
Atmospheric air is in parallel flow \(\left(u_{\infty}=10 \mathrm{~m} / \mathrm{s}, T_{\infty}= ight.\) \(15^{\circ} \mathrm{C}\) ) over a flat heater surface that is to be maintained at a...
Consider laminar boundary layer flow over a flat plate. For identical flow conditions, determine the entries not shown in the table below, using the fact that \(\delta / \delta_{t}=P r^{n}\). The...
A circuit board with a dense distribution of integrated circuits (ICs) and dimensions of \(20 \mathrm{~mm} \times 20 \mathrm{~mm}\) on a side is cooled by the parallel flow of atmospheric air with a...
As a means of preventing ice formation on the wings of a small, private aircraft, it is proposed that electric resistance heating elements be installed within the wings. To determine representative...
An object of irregular shape has a characteristic length of \(L=0.5 \mathrm{~m}\) and is maintained at a uniform surface temperature of \(T_{s}=400 \mathrm{~K}\). When placed in atmospheric air at a...
Dry air at \(32^{\circ} \mathrm{C}\) flows over a wetted (water) plate of \(0.25 \mathrm{~m}^{2}\) area. The average convection coefficient is \(\bar{h}=22 \mathrm{~W} / \mathrm{m}^{2} \cdot...
The dryer section of a paper mill consists of 30 hot, 1.5-m-diameter cylindrical rollers of length \(3 \mathrm{~m}\). A \(225^{\circ}\) arc of each roller is in contact with the moist paper sheet,...
On a summer day the air temperature is \(30^{\circ} \mathrm{C}\) and the relative humidity is \(55 \%\). Water evaporates from the surface of a lake at a rate of \(0.08 \mathrm{~kg} / \mathrm{h}\)...
A strut is exposed to a hot airflow. It is necessary to run experiments to determine the average convection heat transfer coefficient \(\bar{h}\) from the air to the strut in order to be able to cool...
An experiment involves the flow of air at atmospheric pressure and \(300 \mathrm{~K}\) over an object of characteristic length \(L=1 \mathrm{~m}\) that is coated with species A. The measured average...
On a cool day in April a scantily clothed runner is known to lose heat at a rate of \(450 \mathrm{~W}\) when running on a level surface because of convection to the surrounding air at...
Photosynthesis, as it occurs in the leaves of a green plant, involves the transport of carbon dioxide \(\left(\mathrm{CO}_{2} ight)\) from the atmosphere to the chloroplasts of the leaves. The rate...
Consider two cases involving parallel flow of dry air at \(V=1 \mathrm{~m} / \mathrm{s}, T_{\infty}=45^{\circ} \mathrm{C}\), and atmospheric pressure over an isothermal plate at \(T_{s}=20^{\circ}...
Consider atmospheric air at \(20^{\circ} \mathrm{C}\) and a velocity of \(30 \mathrm{~m} / \mathrm{s}\) flowing over both surfaces of a 1-m-long flat plate that is maintained at \(130^{\circ}...
In Example 7.2, it was determined that the sixth segment of the flat plate has the maximum power requirement. Which segment has the minimum power requirement if conditions are identical except the...
Consider a flat plate subject to parallel flow (top and bottom) characterized by \(u_{\infty}=5 \mathrm{~m} / \mathrm{s}, T_{\infty}=20^{\circ} \mathrm{C}\). (a) Determine the average convection heat...
A 1-mm-thick layer of water on an electrically heated plate is maintained at a temperature of \(T_{w}=340 \mathrm{~K}\), as dry air at \(T_{\infty}=300 \mathrm{~K}\) flows over the surface of the...
It is known that on clear nights the air temperature need not drop below \(0^{\circ} \mathrm{C}\) before a thin layer of water on the ground will freeze. Consider such a layer of water on a clear...
The Weather Channel reports that it is a hot, muggy day with an air temperature of \(90^{\circ} \mathrm{F}\), a \(10 \mathrm{mph}\) breeze out of the southwest, and bright sunshine with a solar...
The top surface of a compartment consists of very smooth (A) and highly roughened (B) portions, and the surface is placed in an atmospheric airstream. In the interest of minimizing total convection...
The roof of a refrigerated truck compartment is of composite construction, consisting of a layer of foamed urethane insulation \(\left(t_{2}=50 \mathrm{~mm}, k_{i}=0.026 \mathrm{~W} / \mathrm{m}...
Consider the following fluids, each with a velocity of \(V=3 \mathrm{~m} / \mathrm{s}\) and a temperature of \(T_{\infty}=20^{\circ} \mathrm{C}\), in cross flow over a \(10-\mathrm{mm}\)-diameter...
Hot water at \(50^{\circ} \mathrm{C}\) is routed from one building in which it is generated to an adjoining building in which it is used for space heating. Transfer between the buildings occurs in a...
Pin fins are to be specified for use in an industrial cooling application. The fins will be subjected to a gas in cross flow at \(V=10 \mathrm{~m} / \mathrm{s}\). The cylindrical fin has a diameter...
A long, thin metal plate is hung vertically after a heat treating process. The plate, of width \(W=0.2 \mathrm{~m}\), vertical dimension of \(3 \mathrm{~m}\), and an initial temperature of...
Determine the convection heat transfer coefficient, thermal resistance for convection, and the convection heat transfer rate that are associated with air at atmospheric pressure in cross flow over a...
Consider the conditions of Problem 7.36, but now allow for radiation exchange between the surface of the heating element \((\varepsilon=0.8)\) and the walls of the duct, which form a large enclosure...
A flat plate of width \(1 \mathrm{~m}\) and length \(0.2 \mathrm{~m}\) is maintained at a temperature of \(32^{\circ} \mathrm{C}\). Ambient fluid at \(22^{\circ} \mathrm{C}\) flows across the top of...
Consider the concentrating photovoltaic apparatus of Problem 7.15. The apparatus is to be installed in a desert environment, so the space between the concentrating lens and top of the photovoltaic...
Oil is cooled by spraying a mist of the hot liquid through cool air at \(T_{\infty}=27^{\circ} \mathrm{C}\). Two droplets, each of diameter \(D=100 \mu \mathrm{m}\) and temperature \(250^{\circ}...
Air at \(25^{\circ} \mathrm{C}\) flows over a 10 -mm-diameter sphere with a velocity of \(15 \mathrm{~m} / \mathrm{s}\), while the surface of the sphere is maintained at \(75^{\circ} \mathrm{C}\)....
A temperature sensor of \(10.5-\mathrm{mm}\) diameter experiences cross flow of water with a free stream temperature of \(80^{\circ} \mathrm{C}\) and variable velocity. Derive an expression for the...
Consider temperature measurement in a gas stream using the thermocouple junction described in Problem 7.66 ( \(D=2 \mathrm{~mm}, \varepsilon=0.60\) ). If the gas velocity and temperature are \(2...
For the conditions of Problem 7.60, what are the terminal velocity and the tank height if engine oil at \(315 \mathrm{~K}\), rather than water, is used as the coolant? Data From Problem 7.60:- Copper...
Worldwide, over a billion solder balls must be manufactured daily for assembling electronics packages. The uniform droplet spray method uses a piezoelectric device to vibrate a shaft in a pot of...
A spherical, underwater instrument pod used to make soundings and to measure conditions in the water has a diameter of \(100 \mathrm{~mm}\) and dissipates \(400 \mathrm{~W}\). (a) Estimate the...
An aluminum transmission line with a diameter of \(20 \mathrm{~mm}\) has an electrical resistance of \(R_{\text {elec }}^{\prime}=\) \(2.636 \times 10^{-4} \Omega / \mathrm{m}\) and carries a current...
To determine air velocity changes, it is proposed to measure the electric current required to maintain a platinum wire of \(0.25-\mathrm{mm}\) diameter at a constant temperature of \(77^{\circ}...
A 25-mm-diameter hot surface at \(T_{s}=85^{\circ} \mathrm{C}\) is cooled by an air jet exiting a 5-mm-diameter round nozzle with a velocity of \(35 \mathrm{~m} / \mathrm{s}\) and temperature of...
A tube bank uses an aligned arrangement of \(15-\mathrm{mm}-\) diameter tubes with \(S_{T}=S_{L}=30 \mathrm{~mm}\). There are 10 rows of tubes with 50 tubes in each row. Consider an application for...
Latent heat capsules consist of a thin-walled spherical shell within which a solid-liquid, phase-change material (PCM) of melting point \(T_{\mathrm{mp}}\) and latent heat of fusion \(h_{s f}\) is...
The use of rock pile thermal energy storage systems has been considered for solar energy and industrial process heat applications. A particular system involves a cylindrical container, \(2...
A circular transistor of \(15-\mathrm{mm}\) diameter is cooled by impingement of an air jet exiting a 3-mm-diameter round nozzle with a velocity of \(20 \mathrm{~m} / \mathrm{s}\) and a temperature...
A tube bank uses an aligned arrangement of \(30-\mathrm{mm}\) diameter tubes with \(S_{T}=S_{L}=60 \mathrm{~mm}\) and a tube length of \(1 \mathrm{~m}\). There are 10 tube rows in the flow direction...
Consider the in-line tube bank of Problem \(7.69(D=\) \(10 \mathrm{~mm}, L=1 \mathrm{~m}\), and \(S_{T}=S_{L}=15 \mathrm{~mm}\) ), with condensing steam used to heat atmospheric air entering the tube...
A van traveling \(60 \mathrm{~km} / \mathrm{h}\) has just passed through a thunderstorm that left a film of water \(0.05 \mathrm{~mm}\) thick on the top of the van. The top of the van can be assumed...
Consider mass loss from a smooth wet flat plate due to forced convection at atmospheric pressure. The plate is \(0.4 \mathrm{~m}\) long and \(2 \mathrm{~m}\) wide. Dry air at \(300 \mathrm{~K}\) and...
Magic Aqua Ltd, which runs competitive swimming schools for children aged 816, has budgeted revenue for the first 6 months of 2025 as follows. All revenue is provided on account and Magic Aqua Ltd...
Fly Fast Ltd operates a small charter plane operation in South West Queensland. The airline provides a fly-in fly-out service to mining operations in this area. Currently Fly Fast operates one plane...
Jo, John and Jack are three generations of the one family involved for nearly 50 years in providing legal services. The firm is preparing its fees budget for the year ending 30 June 2025. It budgets...
You are newly employed by Silver and Gold Ltd to promote their environmental approach to mining for minerals. In their annual report and promotional material, Silver and Gold Ltd states that...
Dry air at \(35^{\circ} \mathrm{C}\) and a velocity of \(20 \mathrm{~m} / \mathrm{s}\) flows over a long cylinder of \(25-\mathrm{mm}\) diameter. The cylinder is covered with a thin porous coating...
A 20-mm-diameter, 1-m-long, thin-walled copper tube contains a material that generates thermal energy at a volumetric rate of \(\dot{q}=0.2 \mathrm{MW} / \mathrm{m}^{3}\). The rod is cooled by air at...
An electric power plant generates \(500 \mathrm{MW}\) of electric power and operates at a thermal efficiency of 38 percent. The waste heat from the power plant is transferred to the environment from...
Cloud Tech Ltd produces four types of drones, which are sold to local retail stores. The marketing department expects the following sales performance for the next year. Required Prepare a monthly...
The following expenses budget has been prepared for Zuri Health Ltd for the year ending 30 June 2025. Required Prepare a schedule of estimated cash payments for expenses for Zuri Health Ltd for the...
Superchef World Class Kitchens supplies two varieties of kitchen benchtops, Solid Surface and Laminate. The projected operating data for the month of September are as follows. Required Prepare a...
Chris Zarb, the marketing manager for Maltese Treasures Ltd, is preparing a sales budget for the year ended 30 June 2025. In reviewing the actual sales data for the previous year, the sales and...
Moda Market sells high-end fashion accessories for smart phones imported directly from Italy. Moda currently sells products to fit four popular devices: iPhone 16X, iPhone 16 Pro, Galaxy S33 and...
Moove Motors Ltd produces two models of electronic scooters . The projected financial data for the month of January are as follows. Required Prepare a production budget for January. Small Large...
Eastern Engines Ltd has a policy of maintaining a finished goods inventory balance at the end of a month equal to 25% of the sales requirements of the following month. The ending inventory balance on...
The purchasing officer for Cellar Cork Ltd has prepared a purchases budget for the financial year ending 31 March 2025, based on the following data. Required (a) Calculate the amount of purchases...
A scuba diver is exploring a shipwreck at a depth of 30 meters in the ocean. The diver's tank contains 5.0 moles of compressed air at a temperature of 25C. What is the pressure of the air in the tank...
Kool Kitchens specialises in cutting and preparing granite panels for customised kitchen cabinetry. This requires highly specialised laser cutting and polishing equipment. Consequently, Kool Kitchens...
Ozarch Ltd is in the process of preparing direct labour and factory overhead budgets for the year ending 30 June 2025. Relevant data are set out below. Required (a) Prepare the direct labour budget...
Greyt Dog Beds Ltd manufactures dog beds specifically designed for greyhounds and whippets. The company purchases all the required materials from external suppliers and designs and assembles the...
Terrific Tiles Ltd has a policy of maintaining a finished goods inventory balance at the end of a month equal to 50% of the sales requirements of the following month. The ending inventory balance on...
Real Potential Training has used the following budgeted amounts for its controllable costs during 2025. Required (a) Prepare a budget performance report for 2025 by preparing a budget for each cost...
The budgeted monthly service revenues for Shumin Services Ltd for January to June are as follows. All of the firms invoicing for services is on a credit basis. All payments received from clients on...
The budgeted monthly service revenues for Cotsiopoulos Ltd for January to June are presented below. The entitys experience is that 70% of monthly invoicing for services is on a credit basis. All cash...
Alfresco Ltd manufactures air-conditioning units designed for apartment use. The company markets this line in two geographic areas, one with a humid climate and the other with a dry climate....
Capital Cables Ltd manufactures digital fibre optic cables designed for telecommunications use. The company markets this product to commercial contractors engaged in government projects. Capital...
Shades of Sand Spa Resort has 100 residential villas to accommodate guests. The accountant for the resort has asked you, the marketing manager, to prepare a budget for expected relaxation treatment...
Siam Resort has prepared the following budgeted amounts for its costs for 2025. Siam Resort has 32 luxury rooms available in the resort. It operates 365 days of the year. Required (a) Prepare a fixed...
1. Determine the atmospheric pressure at a location where the barometric reading is 720 mm Hg. 2. A pressure gauge connected to a tank reads 52 psi at a location where the barometric reading is 29.6...
Sheds Ahead Ltd produces outdoor sheds for domestic use. The manager in charge of production has been asked to prepare a production budget, a direct materials budget and a direct labour budget for...
All Aboard Ltd is preparing a quarterly budget covering the 3 months ending 30 June 2025. The information available for the budget is as follows. 1. Cash sales represent 40% of all monthly sales; 60%...
Collect All Ltd is preparing a quarterly budget covering the 3 months ending 30 September 2025. The information available for the budget is as follows. 1. Cash sales represent 80% of all monthly...
Global Quality Ltd produces two types of embossing machines, a standard model and a deluxe model. The budgeted factory overhead costs for the production operation during 2025 are as follows....
Warmup Ltd produces outdoor gas fires for domestic use. The following information has been gathered so that a production budget, a direct materials budget and a direct labour budget for part of 2025...
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