Thinking Like an Engineer: An Active Learning Approach (3rd Edition)
3rd Edition
ISBN: 9780133593211
Author: Elizabeth A. Stephan, David R. Bowman, William J. Park, Benjamin L. Sill, Matthew W. Ohland
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 7, Problem 16RQ
One of the National Academy of Engineering Grand Challenges for Engineering is Provide Access to Clean Water. Only 5% of water is used for households-the majority is used for agriculture and industry. It is estimated that 528 gallons [gal] of water are required to produce food for one person for one day [d]. How many liters per year (L/yr] are required to feed one person?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A truck driver was robbed while he was on his lunch break!
At the first weigh station before lunch, the truck weighed 45,000 pounds-force [???][lbf].
At the second weigh station after lunch, which unfortunately reports weight in different units, the truck weighed 32.5 kips [???][kip].
The specific gravity of diesel fuel is 0.75.
What is the volume of fuel stolen in units of gallons [???][gal]?
A robotic rover on Mars finds a spherical rock with a diameter of 8 centimeters [cm]. The rover picks
up the rock and lifts it 25 centimeters [cm] straight up. The rock has a specific gravity of 4.75. The
gravitational acceleration on Mars is 3.7 meters per second squared [m/s²]. If the robot's lifting arm
has an efficiency of 35% and required 10 seconds [s] to raise the rock 25 centimeters [cm], how
much power in units of watts [W] did the arm use?
T1- Ambient tempeture [k]
t- inside tempeture [k]
hoo-convective heat transfer coefficient of the air [W/m^2*k]
t-thickness of walls[m]
Kthermal conductivity (W/m-K) -(VIP)
d-cube size [m]
Ai-cube area inside [m^2]
Ao-cube area outside [m^2]
Ts-surface tempeture[k][
E-emissivity aluminium foil
- Stefan Boltzmann constant W·m-2 K-4
303
290
10
0.08
0.007
1
6
6.96
300
0.03
5.67E-08
Q heat flux [W]
ΔΤ
ΣR
F
T₁
111.0
0000
006%
Chapter 7 Solutions
Thinking Like an Engineer: An Active Learning Approach (3rd Edition)
Ch. 7.1 - Express the following values using an appropriate...Ch. 7.1 - Indicate if the following units are correctly...Ch. 7.3 - Comprehension Check 7-3 The highest mountain in...Ch. 7.3 - To be considered a full-time employee, companies...Ch. 7.4 - In January 2008, Scientific American reported that...Ch. 7.4 - Officially, a hurricane is a tropical storm with...Ch. 7.4 - Many toilets in commercial establishments have a...Ch. 7.5 - Comprehension Check 7-8 A hogshead is a unit of...Ch. 7.5 - Comprehension Check 7-9 In NCAA basketball, a...Ch. 7.5 - A boat is traveling at 20 knots. Convert this...
Ch. 7.6 - Determine the fundamental dimensions of the...Ch. 7.6 - Prob. 12CCCh. 7.6 - Identify the quantity through the use of...Ch. 7.7 - The power absorbed by a resistor can be given by P...Ch. 7.7 - Indicate whether the following equation is...Ch. 7.8 - Eclipses, both solar and lunar, follow a cycle of...Ch. 7.8 - A basketball has a diameter of approximately 27...Ch. 7 - Express the following values using scientific...Ch. 7 - Complete the following table.Ch. 7 - Complete the following table.Ch. 7 - Complete the following table.Ch. 7 - Complete the following table.Ch. 7 - Complete the following table. gallons per minute...Ch. 7 - A category F5 tornado can have wind speeds of 300...Ch. 7 - A new hybrid automobile with regenerative braking...Ch. 7 - The AbioCorTM artificial heart pumps at a rate of...Ch. 7 - If a pump moves water at 70 gallons per minute...Ch. 7 - In China, one "bu" is 1.66 meters [m]. The average...Ch. 7 - Prob. 12ICACh. 7 - In China, one "fen" is defined as 3.3 millimeters...Ch. 7 - A blink of a human eye takes approximately 300-400...Ch. 7 - If the Sl prefix system was expanded to other...Ch. 7 - A "jiffy" is defined as 1/60 of a second [s]....Ch. 7 - A "knot'' is a unit of speed in marine travel. One...Ch. 7 - The Earth's escape velocity is 7 miles per second...Ch. 7 - A manufacturing process uses 10 pound-mass of...Ch. 7 - CA 7-23 Determine the fundamental dimensions of...Ch. 7 - Prob. 21ICACh. 7 - Prob. 22ICACh. 7 - Prob. 23ICACh. 7 - Prob. 24ICACh. 7 - Prob. 25ICACh. 7 - A circular window has a 10-inch [in] radius. What...Ch. 7 - When shipping freight around the world, most...Ch. 7 - A body traveling in a circle experiences an...Ch. 7 - In NCAA basketball, the center circle diameter...Ch. 7 - Continental drift has an average velocity of 2...Ch. 7 - Express the following values using scientific...Ch. 7 - Express the following values using scientific...Ch. 7 - Which of the following is the longest distance? A....Ch. 7 - Which of the following is the largest volume? A....Ch. 7 - In 2001 , the first iPodTM by Apple had a rated...Ch. 7 - New plastic fuel tanks for cars can be molded to...Ch. 7 - The longest sea bridge, the Jiaozhou Bay Bridge in...Ch. 7 - The term "deep sea" refers to everything in the...Ch. 7 - Which of the following is the fastest speed? A. 50...Ch. 7 - Which of the following is the largest mass...Ch. 7 - Which of the following is the largest volumetric...Ch. 7 - If a liquid evaporates at a rate of 50 kilograms...Ch. 7 - Prob. 13RQCh. 7 - Prob. 14RQCh. 7 - Prob. 15RQCh. 7 - One of the National Academy of Engineering Grand...Ch. 7 - The oxgang is unit of area equal to 20 acres....Ch. 7 - In an effort to modernize the United States...Ch. 7 - Old Mississippi River paddle wheelers routinely...Ch. 7 - The Units Society Empire (USE) had defined the...Ch. 7 - Prob. 21RQCh. 7 - The Units Society Empire (USE) had defined the...Ch. 7 - The Units Society Empire (USE) had defined the...Ch. 7 - The Units Society Empire (USE) had defined the...Ch. 7 - Prob. 25RQCh. 7 - Prob. 26RQCh. 7 - Prob. 27RQCh. 7 - Prob. 28RQCh. 7 - Prob. 29RQCh. 7 - Prob. 30RQCh. 7 - Prob. 31RQCh. 7 - Prob. 32RQCh. 7 - We wish to analyze the velocity of a fluid exiting...Ch. 7 - Wind energy uses large fans to extract energy from...Ch. 7 - Prob. 35RQCh. 7 - Prob. 36RQCh. 7 - Prob. 37RQCh. 7 - Prob. 38RQCh. 7 - The largest hailstone is the United States was...Ch. 7 - The largest hailstone is the United States was...Ch. 7 - How large a surface area in units of square feet...Ch. 7 - How large a surface area in units of square feet...Ch. 7 - Prob. 43RQCh. 7 - In many engineering uses, the value of "g," the...Ch. 7 - In many engineering uses, the value of "g," the...Ch. 7 - A box has a volume of 10 gallons [gal]. If two...Ch. 7 - Prob. 47RQ
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
Determine the velocity of block D if end A of the rope is pulled down with a speed of vA = 3 m/s.
Engineering Mechanics: Dynamics (14th Edition)
The triple jump is a track-and-field event in which an athlete gets a running start and tries to leap as far as...
Vector Mechanics For Engineers
The spring of k and unstretched length 1.5R is attached to the disk at a radial distance of 0.75R from the cent...
Engineering Mechanics: Statics
Steady state conduction rate to the warm compressor to the net power produces theoretically by thermodynamic ba...
Introduction to Heat Transfer
Consider a subsonic compressible flow in cartesian coordinates where the velocity potential is given by (x,y)=V...
Fundamentals of Aerodynamics
List several uses of the arbor press.
Machine Tool Practices (10th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- The following processes occurs in a reversible thermodynamic cycle: 1-2: Reversible polytropic compression at pressure [X] bar at volume [Y] m3 to a pressure [Z] bar and specific volume [A] m3/kg. The index of compression may be taken as n. 2-3: Reversibly expansion with expansion index of 2 to pressure [B] bar. 3-1: Reversible cooling at constant volume to the initial state. What are the final attempt values of X, Y, Z, A and B from the Part A of the eThuto Assessment. calculated formula similar question? X= ; Y= ; Z= ; A= ; B=arrow_forwardYou have 4 springs, one each 3.5, 6, 8.5, 11 newtons per meter. How close an equivalent stiffness to the average of the four springs (7.25 newtons per meter [N/m]) can you make using only these springs? You may use all four springs to do this, but you may use less if that will yield an equivalent stiffness closer to the average.arrow_forwardConsider the piston-cylinder assembly shown below. Heavy weights are added to the piston, compressing the gas. Assume that the gas reaches an internal pressure of 1.5 bar after the compression is done. The pressure outside the piston-cylinder is 1 bar. We also know that the piston diameter is 20 [cm.] With how much force doe the gas push upward on the piston (in Newtons?) Weights Piston System boundary Gas Ро garrow_forward
- A cylindrical pipe with a cross-sectional radius r = 1.40[cm] is plunged into a l = 2.30[m] tall open water drum that is initially completely filled with water (pwater = 1000 [kg/m3]). The pipe goes h1 = 0.35 [m] above the drum before dropping down h2 = 3.50 [m] below the base of the drum as shown. The cross-sectional radius of the top side of the pipe is R = 2.20 [cm].A. How fast is the water going out of this pipe?B. What's the liquid's pressure at the top of the pipe? Assume that the system is exposed to 1.00 [atm] of air pressure.C. What's the maximum height the pipe can go above the drum before the water stops flowing out of the pipe? For liquid flow to be continuous, the liquid’s pressure must not fall before its vapor pressure. Assume that vapor pressure, in this case, is 2.30 [kPa].arrow_forward1500 W of power is input into a fluid with mass 15 kg and specific heat capacity of 3.2 kJ/[kg K]. What is the heating rate of this fluid assuming heat losses are negligible and there exist no changes in the pressure of the system? 1.875 K/min 0.03125 K/min 1875 K/min 45 K/minarrow_forwardTo heat potatoes, you use a microwave with an output power of 780 watts [W]. The microwave has "pre-set" cook buttons. The "potato" button will cook a 0.625 pound-mass [lbm] potato by heating the potato from room temperature (assumed to be 68 degrees Fahrenheit [°F]) to 425 degrees Fahrenheit [°F]. The specific heat of a potato is 3.4 kilojoules per kilogram kelvin [kJ/(kg K)]. What is the length of time the "pre-set" button is programmed to operate in units of minutes [min]?arrow_forward
- Feeding Rate (R) [g/h] 6 5 1 0 A B 0 1 U 2 3 E D F 4 5 6 7 8 9 Time (t) [h] 10 11 12 13 14 The feeding rate in grams per hour is displayed as a function of time in hours [h] for a bioreactor. Select the phrase that makes the following sentences true. Between points C and D, the feeding rate [Select ] Between points D and E, the feeding rate [Select] The mass of feed in grams [g] added to the bioreactor between points F and G is [Select ] The mass of feed added to the bioreactor between points E and F is zero The mass of feed added to the bioreactor between points H and I is [Select] grams [g].arrow_forwardYou have three springs. You conduct several tests and determine the following data. Click the icon to view the provided graph. Choose one correct spring or spring combination that will meet the following criteria as closely as possible. Assume you have one of each spring available for use. List the spring or spring combination and the resulting spring constant. (a) You want the spring or spring system to hold 71 grams [g] and displace approximately 0.75 centimeters [cm]. The appropriate system is spring 2 and spring 3 in parallel with the stiffness of N/m. (Round your answer to the nearest whole number.) More Info Force (F) [N] F = 0.075x F = 0.035x F = 0.02x Spring #1 Spring #2 ▲ Spring #3 Elongation (x) [mm] Xarrow_forwardHouses .18 A deep geothermal system delivers 50000 [MWh] heat at 60 [oC] yearly. The average heating demand of a house in a new-built district equipped with floor heating is 10000 [kWh]. How many houses can be heated by this geothermal ?system 5 O 500 O 5000 50000 Oarrow_forward
- A heat pump is used to heat a house. The heat loss of the house at a time when the outside temperature is A ° C is B kJ / h. The interior temperature of the house is C ° C. If the coefficient of action (COPIP) of the heat pumpis D under these conditions ,a) The power consumed by the heat pump [kW],b) The heat transferred from the cold outside air to the heat pump [kJ / h]c) If the heat pump is considered to work reversibly,calculate the COPIP.arrow_forwardOn average, a bolt of lightning provides 500 megajoules [MJ][MJ] of energy. Doctor Emmitt Brown’s flux capacitor needs 1.21 gigawatts [GW][GW] of power to his DeLorean DMC-12 time machine. How long in units of seconds [s][s] must the lightning bolt be in contact with the car to completely charge the flux capacitor? Assume 100% of the energy from the lightning is captured by the capacitor.arrow_forwardYou are heating motor oil to make it flow better from the original shipping container to the new container you built. You know that the heating rate of the motor oil is 2.50 degrees Celsius per slug second [°C /(slug s)]. Express this heating rate in units of degrees Fahrenheit per pound-mass second [°F/ (lbm s)]. Click the icon to view the conversion table. Click the icon to view the factors for temperature intervals conversion The heating rate is °F / (lbm s). (Round your answer to three decimal places.)arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University Press
Mechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSON
Thermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEY
Mechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage Learning
Engineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY
Elements Of Electromagnetics
Mechanical Engineering
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:9780134319650
Author:Russell C. Hibbeler
Publisher:PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:9781259822674
Author:Yunus A. Cengel Dr., Michael A. Boles
Publisher:McGraw-Hill Education
Control Systems Engineering
Mechanical Engineering
ISBN:9781118170519
Author:Norman S. Nise
Publisher:WILEY
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Cengage Learning
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:9781118807330
Author:James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:WILEY
Chemical and Phase Equilibrium; Author: LearnChemE;https://www.youtube.com/watch?v=SWhZkU7e8yw;License: Standard Youtube License