SlideShare a Scribd company logo
1 of 3
Download to read offline
Homework 1
Due 2/7/2014
Chapter 1
Problem:
(1.45) If the water pressure at the base of the water tower shown below is 4.15 bar, determine
the pressure of the air trapped above the water level, in bar. The density of the water is 103
kg/m3
and g is 9.81 m/s2
.
True or False
(1.60)
b) Specific volume, the volume per unit mass, is an intensive property while volume and mass
are extensive properties.
d) If the value of any property of a system changes with time, that system cannot be at steady
state (equilibrium).
f) According to Archimedes’ principle, the magnitude of the buoyant force acting on a
submerged body is equal to the weight of the body.
(1.61)
a) A refrigerant at an absolute pressure of 0.8 atm is at a gage pressure of 0.2 atm.
b) Temperature is the property that is the same for each of two systems when they are in
thermal equilibrium.
e) A control volume is a special type of closed system that does not interact in any way with its
surroundings.
Chapter 2
Problems:
(2.2) An object whose mass is 400 kg is located at an elevation of 25 m above the surface of the
earth. For g = 9.78 m/s2
, determine the gravitational potential energy of the object, in kJ,
relative to the surface of the earth.
(2.6) An object of mass 1000 kg, initially having a velocity of 100 m/s, decelerates to a final
velocity of 20 m/s. What is the change in kinetic energy of the object, in kJ?
(2.16) Beginning from rest, an object of mass 200 kg slides down a 10 m ramp. The ramp is
inclined at an angle of 40° from the horizontal. If air resistance and friction between the object
and the ramp are negligible, determine the velocity of the object, in m/s, at the bottom of the
ramp. Let g = 9.81 m/s2
.
(2.21) A major force opposing the motion of a vehicle is the rolling resistance of the tires, Fr,
given by
Fr = fw
Where f is a constant called the rolling resistance coefficient and w is the vehicle weight.
Determine the power, in kW, required to overcome rolling resistance for a truck weighing 322.5
kN that is moving at 110 km/h. Let f = 0.0069.
(2.25) A gas in a piston-cylinder assembly undergoes a process for which the relationship for
pressure and volume is pV2
= constant. The initial pressure is 1 bar, the initial volume is 0.1 m3
,
and the final pressure is 9 bar. Determine a) the final volume, in m3
, and b) the work for the
process, in kJ.
(2.31) Air contained within a piston-cylinder is slowly heated. As shown in figure p2.31, during
the process the pressure first varies linearly with volume and then remains constant.
Determine the total work, in kJ.

More Related Content

What's hot

MET212-Assinment 1
MET212-Assinment 1MET212-Assinment 1
MET212-Assinment 1hotman1991
 
ME 12 FI QUIZ NO. 2
ME 12 FI QUIZ NO. 2ME 12 FI QUIZ NO. 2
ME 12 FI QUIZ NO. 2Yuri Melliza
 
ME 12 Assignment No. 1
ME 12 Assignment No. 1ME 12 Assignment No. 1
ME 12 Assignment No. 1Yuri Melliza
 
Mechanical engineer's manual(by. engr. yuri g. melliza)
Mechanical engineer's manual(by. engr. yuri g. melliza)Mechanical engineer's manual(by. engr. yuri g. melliza)
Mechanical engineer's manual(by. engr. yuri g. melliza)Yuri Melliza
 
Top schools in delhi ncr
Top schools in delhi ncrTop schools in delhi ncr
Top schools in delhi ncrEdhole.com
 
Fluid Mechanics Chapter 7. Compressible flow
Fluid Mechanics Chapter 7. Compressible flowFluid Mechanics Chapter 7. Compressible flow
Fluid Mechanics Chapter 7. Compressible flowAddisu Dagne Zegeye
 
Assignment thermal 2018 . ...
Assignment thermal 2018                   .                                  ...Assignment thermal 2018                   .                                  ...
Assignment thermal 2018 . ...musadoto
 
Fluid mechanics ( 2019 2020)
Fluid mechanics ( 2019 2020)Fluid mechanics ( 2019 2020)
Fluid mechanics ( 2019 2020)Yuri Melliza
 
Chapter 7. compressible flow.pptx copy
Chapter 7. compressible flow.pptx   copyChapter 7. compressible flow.pptx   copy
Chapter 7. compressible flow.pptx copykidanemariam tesera
 
Akash ppt 1 bulk modulus &compressibility &surface tension
Akash ppt 1 bulk modulus &compressibility &surface tension  Akash ppt 1 bulk modulus &compressibility &surface tension
Akash ppt 1 bulk modulus &compressibility &surface tension AkashGudapalli
 
Fundamentals of heat transfer lecture notes
Fundamentals of heat transfer lecture notesFundamentals of heat transfer lecture notes
Fundamentals of heat transfer lecture notesYuri Melliza
 
MET212-Assignment 2
MET212-Assignment 2MET212-Assignment 2
MET212-Assignment 2hotman1991
 
Potter, merle c capitulo 8
Potter, merle c capitulo 8Potter, merle c capitulo 8
Potter, merle c capitulo 8Steeven2405
 
Thermo problem set no. 1
Thermo problem set no. 1Thermo problem set no. 1
Thermo problem set no. 1Yuri Melliza
 
solution manual to basic and engineering thermodynamics by P K NAG 4th edition
solution manual to basic and engineering thermodynamics by P K NAG 4th editionsolution manual to basic and engineering thermodynamics by P K NAG 4th edition
solution manual to basic and engineering thermodynamics by P K NAG 4th editionChandu Kolli
 

What's hot (18)

MET212-Assinment 1
MET212-Assinment 1MET212-Assinment 1
MET212-Assinment 1
 
MET 214 Module 8
MET 214 Module 8MET 214 Module 8
MET 214 Module 8
 
ME 12 FI QUIZ NO. 2
ME 12 FI QUIZ NO. 2ME 12 FI QUIZ NO. 2
ME 12 FI QUIZ NO. 2
 
ME 12 Assignment No. 1
ME 12 Assignment No. 1ME 12 Assignment No. 1
ME 12 Assignment No. 1
 
Mechanical engineer's manual(by. engr. yuri g. melliza)
Mechanical engineer's manual(by. engr. yuri g. melliza)Mechanical engineer's manual(by. engr. yuri g. melliza)
Mechanical engineer's manual(by. engr. yuri g. melliza)
 
Top schools in delhi ncr
Top schools in delhi ncrTop schools in delhi ncr
Top schools in delhi ncr
 
Fluid Mechanics Chapter 7. Compressible flow
Fluid Mechanics Chapter 7. Compressible flowFluid Mechanics Chapter 7. Compressible flow
Fluid Mechanics Chapter 7. Compressible flow
 
Assignment thermal 2018 . ...
Assignment thermal 2018                   .                                  ...Assignment thermal 2018                   .                                  ...
Assignment thermal 2018 . ...
 
Fluid mechanics ( 2019 2020)
Fluid mechanics ( 2019 2020)Fluid mechanics ( 2019 2020)
Fluid mechanics ( 2019 2020)
 
Chapter 7. compressible flow.pptx copy
Chapter 7. compressible flow.pptx   copyChapter 7. compressible flow.pptx   copy
Chapter 7. compressible flow.pptx copy
 
Akash ppt 1 bulk modulus &compressibility &surface tension
Akash ppt 1 bulk modulus &compressibility &surface tension  Akash ppt 1 bulk modulus &compressibility &surface tension
Akash ppt 1 bulk modulus &compressibility &surface tension
 
Fundamentals of heat transfer lecture notes
Fundamentals of heat transfer lecture notesFundamentals of heat transfer lecture notes
Fundamentals of heat transfer lecture notes
 
MET212-Assignment 2
MET212-Assignment 2MET212-Assignment 2
MET212-Assignment 2
 
Potter, merle c capitulo 8
Potter, merle c capitulo 8Potter, merle c capitulo 8
Potter, merle c capitulo 8
 
Fluida
FluidaFluida
Fluida
 
Thermo problem set no. 1
Thermo problem set no. 1Thermo problem set no. 1
Thermo problem set no. 1
 
Chapter 14
Chapter 14Chapter 14
Chapter 14
 
solution manual to basic and engineering thermodynamics by P K NAG 4th edition
solution manual to basic and engineering thermodynamics by P K NAG 4th editionsolution manual to basic and engineering thermodynamics by P K NAG 4th edition
solution manual to basic and engineering thermodynamics by P K NAG 4th edition
 

Similar to Homework 1 Solutions Chapter 1-2 Problems

Thermo problem set no. 2
Thermo problem set no. 2Thermo problem set no. 2
Thermo problem set no. 2Yuri Melliza
 
Chapter 1(terms and definition)
Chapter 1(terms and definition)Chapter 1(terms and definition)
Chapter 1(terms and definition)Yuri Melliza
 
First Law of Thermodynamics: Energy Conservation For Mechanical and Industria...
First Law of Thermodynamics: Energy Conservation For Mechanical and Industria...First Law of Thermodynamics: Energy Conservation For Mechanical and Industria...
First Law of Thermodynamics: Energy Conservation For Mechanical and Industria...Kum Visal
 
Engineering Fluid Mechanics 10th Edition Elger Solutions Manual
Engineering Fluid Mechanics 10th Edition Elger Solutions ManualEngineering Fluid Mechanics 10th Edition Elger Solutions Manual
Engineering Fluid Mechanics 10th Edition Elger Solutions ManualNortoner
 
vdocuments.mx_thermodynamics-an-engineering-approach-5th-ed-solution.pdf
vdocuments.mx_thermodynamics-an-engineering-approach-5th-ed-solution.pdfvdocuments.mx_thermodynamics-an-engineering-approach-5th-ed-solution.pdf
vdocuments.mx_thermodynamics-an-engineering-approach-5th-ed-solution.pdfizzy428028
 
Thermodynamics An Engineering Approach 5th Ed. (Solution).pdf
Thermodynamics An Engineering Approach 5th Ed. (Solution).pdfThermodynamics An Engineering Approach 5th Ed. (Solution).pdf
Thermodynamics An Engineering Approach 5th Ed. (Solution).pdfMahamad Jawhar
 
Thermodynamics (2013 new edition) copy
Thermodynamics (2013 new edition)   copyThermodynamics (2013 new edition)   copy
Thermodynamics (2013 new edition) copyYuri Melliza
 
Evaluating Properties For mechanical and Industrial Engineering
 Evaluating Properties For mechanical and Industrial Engineering Evaluating Properties For mechanical and Industrial Engineering
Evaluating Properties For mechanical and Industrial EngineeringKum Visal
 
Characterization of a cold battery with iced water and double
Characterization of a cold battery with iced water and doubleCharacterization of a cold battery with iced water and double
Characterization of a cold battery with iced water and doubleAlexander Decker
 
ME 12 F1 (MODULE 1)
ME 12 F1 (MODULE 1)ME 12 F1 (MODULE 1)
ME 12 F1 (MODULE 1)Yuri Melliza
 
Thermo 5th chap01_p001
Thermo 5th chap01_p001Thermo 5th chap01_p001
Thermo 5th chap01_p001João Pires
 
Thermo 5th chap01p001
Thermo 5th chap01p001Thermo 5th chap01p001
Thermo 5th chap01p001Luma Marques
 
Class 11 important questions for physics Friction in Soilds and Liquids
Class 11 important questions for physics Friction in Soilds and LiquidsClass 11 important questions for physics Friction in Soilds and Liquids
Class 11 important questions for physics Friction in Soilds and LiquidsInfomatica Academy
 
Me6301 engineering thermodynamics uq - nov dec 2018
Me6301 engineering thermodynamics   uq - nov dec 2018Me6301 engineering thermodynamics   uq - nov dec 2018
Me6301 engineering thermodynamics uq - nov dec 2018BIBIN CHIDAMBARANATHAN
 
Aircraft Propulsion - Review of Fundamentals
Aircraft Propulsion - Review of FundamentalsAircraft Propulsion - Review of Fundamentals
Aircraft Propulsion - Review of FundamentalsAnurak Atthasit
 

Similar to Homework 1 Solutions Chapter 1-2 Problems (20)

Thermo problem set no. 2
Thermo problem set no. 2Thermo problem set no. 2
Thermo problem set no. 2
 
Chapter 1(terms and definition)
Chapter 1(terms and definition)Chapter 1(terms and definition)
Chapter 1(terms and definition)
 
First Law of Thermodynamics: Energy Conservation For Mechanical and Industria...
First Law of Thermodynamics: Energy Conservation For Mechanical and Industria...First Law of Thermodynamics: Energy Conservation For Mechanical and Industria...
First Law of Thermodynamics: Energy Conservation For Mechanical and Industria...
 
Basics of Fluids
Basics of FluidsBasics of Fluids
Basics of Fluids
 
10 fluid dynamics
10 fluid dynamics10 fluid dynamics
10 fluid dynamics
 
Engineering Fluid Mechanics 10th Edition Elger Solutions Manual
Engineering Fluid Mechanics 10th Edition Elger Solutions ManualEngineering Fluid Mechanics 10th Edition Elger Solutions Manual
Engineering Fluid Mechanics 10th Edition Elger Solutions Manual
 
vdocuments.mx_thermodynamics-an-engineering-approach-5th-ed-solution.pdf
vdocuments.mx_thermodynamics-an-engineering-approach-5th-ed-solution.pdfvdocuments.mx_thermodynamics-an-engineering-approach-5th-ed-solution.pdf
vdocuments.mx_thermodynamics-an-engineering-approach-5th-ed-solution.pdf
 
Thermodynamics An Engineering Approach 5th Ed. (Solution).pdf
Thermodynamics An Engineering Approach 5th Ed. (Solution).pdfThermodynamics An Engineering Approach 5th Ed. (Solution).pdf
Thermodynamics An Engineering Approach 5th Ed. (Solution).pdf
 
Thermodynamics (2013 new edition) copy
Thermodynamics (2013 new edition)   copyThermodynamics (2013 new edition)   copy
Thermodynamics (2013 new edition) copy
 
AFMC Physics 2000
AFMC Physics  2000AFMC Physics  2000
AFMC Physics 2000
 
Evaluating Properties For mechanical and Industrial Engineering
 Evaluating Properties For mechanical and Industrial Engineering Evaluating Properties For mechanical and Industrial Engineering
Evaluating Properties For mechanical and Industrial Engineering
 
Characterization of a cold battery with iced water and double
Characterization of a cold battery with iced water and doubleCharacterization of a cold battery with iced water and double
Characterization of a cold battery with iced water and double
 
ME 12 F1 (MODULE 1)
ME 12 F1 (MODULE 1)ME 12 F1 (MODULE 1)
ME 12 F1 (MODULE 1)
 
Thermo qbank2
Thermo qbank2Thermo qbank2
Thermo qbank2
 
Thermo 5th chap01_p001
Thermo 5th chap01_p001Thermo 5th chap01_p001
Thermo 5th chap01_p001
 
Thermo 5th chap01p001
Thermo 5th chap01p001Thermo 5th chap01p001
Thermo 5th chap01p001
 
Class 11 important questions for physics Friction in Soilds and Liquids
Class 11 important questions for physics Friction in Soilds and LiquidsClass 11 important questions for physics Friction in Soilds and Liquids
Class 11 important questions for physics Friction in Soilds and Liquids
 
Me6301 engineering thermodynamics uq - nov dec 2018
Me6301 engineering thermodynamics   uq - nov dec 2018Me6301 engineering thermodynamics   uq - nov dec 2018
Me6301 engineering thermodynamics uq - nov dec 2018
 
Aircraft Propulsion - Review of Fundamentals
Aircraft Propulsion - Review of FundamentalsAircraft Propulsion - Review of Fundamentals
Aircraft Propulsion - Review of Fundamentals
 
Fluids and properties of material
Fluids and properties of materialFluids and properties of material
Fluids and properties of material
 

Recently uploaded

complete construction, environmental and economics information of biomass com...
complete construction, environmental and economics information of biomass com...complete construction, environmental and economics information of biomass com...
complete construction, environmental and economics information of biomass com...asadnawaz62
 
Mine Environment II Lab_MI10448MI__________.pptx
Mine Environment II Lab_MI10448MI__________.pptxMine Environment II Lab_MI10448MI__________.pptx
Mine Environment II Lab_MI10448MI__________.pptxRomil Mishra
 
home automation using Arduino by Aditya Prasad
home automation using Arduino by Aditya Prasadhome automation using Arduino by Aditya Prasad
home automation using Arduino by Aditya Prasadaditya806802
 
chpater16.pptxMMMMMMMMMMMMMMMMMMMMMMMMMMM
chpater16.pptxMMMMMMMMMMMMMMMMMMMMMMMMMMMchpater16.pptxMMMMMMMMMMMMMMMMMMMMMMMMMMM
chpater16.pptxMMMMMMMMMMMMMMMMMMMMMMMMMMMNanaAgyeman13
 
Gravity concentration_MI20612MI_________
Gravity concentration_MI20612MI_________Gravity concentration_MI20612MI_________
Gravity concentration_MI20612MI_________Romil Mishra
 
Internet of things -Arshdeep Bahga .pptx
Internet of things -Arshdeep Bahga .pptxInternet of things -Arshdeep Bahga .pptx
Internet of things -Arshdeep Bahga .pptxVelmuruganTECE
 
Input Output Management in Operating System
Input Output Management in Operating SystemInput Output Management in Operating System
Input Output Management in Operating SystemRashmi Bhat
 
Robotics-Asimov's Laws, Mechanical Subsystems, Robot Kinematics, Robot Dynami...
Robotics-Asimov's Laws, Mechanical Subsystems, Robot Kinematics, Robot Dynami...Robotics-Asimov's Laws, Mechanical Subsystems, Robot Kinematics, Robot Dynami...
Robotics-Asimov's Laws, Mechanical Subsystems, Robot Kinematics, Robot Dynami...Sumanth A
 
Main Memory Management in Operating System
Main Memory Management in Operating SystemMain Memory Management in Operating System
Main Memory Management in Operating SystemRashmi Bhat
 
System Simulation and Modelling with types and Event Scheduling
System Simulation and Modelling with types and Event SchedulingSystem Simulation and Modelling with types and Event Scheduling
System Simulation and Modelling with types and Event SchedulingBootNeck1
 
Energy Awareness training ppt for manufacturing process.pptx
Energy Awareness training ppt for manufacturing process.pptxEnergy Awareness training ppt for manufacturing process.pptx
Energy Awareness training ppt for manufacturing process.pptxsiddharthjain2303
 
DM Pillar Training Manual.ppt will be useful in deploying TPM in project
DM Pillar Training Manual.ppt will be useful in deploying TPM in projectDM Pillar Training Manual.ppt will be useful in deploying TPM in project
DM Pillar Training Manual.ppt will be useful in deploying TPM in projectssuserb6619e
 
Unit7-DC_Motors nkkjnsdkfnfcdfknfdgfggfg
Unit7-DC_Motors nkkjnsdkfnfcdfknfdgfggfgUnit7-DC_Motors nkkjnsdkfnfcdfknfdgfggfg
Unit7-DC_Motors nkkjnsdkfnfcdfknfdgfggfgsaravananr517913
 
Indian Dairy Industry Present Status and.ppt
Indian Dairy Industry Present Status and.pptIndian Dairy Industry Present Status and.ppt
Indian Dairy Industry Present Status and.pptMadan Karki
 
Comparative study of High-rise Building Using ETABS,SAP200 and SAFE., SAFE an...
Comparative study of High-rise Building Using ETABS,SAP200 and SAFE., SAFE an...Comparative study of High-rise Building Using ETABS,SAP200 and SAFE., SAFE an...
Comparative study of High-rise Building Using ETABS,SAP200 and SAFE., SAFE an...Erbil Polytechnic University
 
CCS355 Neural Networks & Deep Learning Unit 1 PDF notes with Question bank .pdf
CCS355 Neural Networks & Deep Learning Unit 1 PDF notes with Question bank .pdfCCS355 Neural Networks & Deep Learning Unit 1 PDF notes with Question bank .pdf
CCS355 Neural Networks & Deep Learning Unit 1 PDF notes with Question bank .pdfAsst.prof M.Gokilavani
 
Class 1 | NFPA 72 | Overview Fire Alarm System
Class 1 | NFPA 72 | Overview Fire Alarm SystemClass 1 | NFPA 72 | Overview Fire Alarm System
Class 1 | NFPA 72 | Overview Fire Alarm Systemirfanmechengr
 
Research Methodology for Engineering pdf
Research Methodology for Engineering pdfResearch Methodology for Engineering pdf
Research Methodology for Engineering pdfCaalaaAbdulkerim
 

Recently uploaded (20)

complete construction, environmental and economics information of biomass com...
complete construction, environmental and economics information of biomass com...complete construction, environmental and economics information of biomass com...
complete construction, environmental and economics information of biomass com...
 
Mine Environment II Lab_MI10448MI__________.pptx
Mine Environment II Lab_MI10448MI__________.pptxMine Environment II Lab_MI10448MI__________.pptx
Mine Environment II Lab_MI10448MI__________.pptx
 
home automation using Arduino by Aditya Prasad
home automation using Arduino by Aditya Prasadhome automation using Arduino by Aditya Prasad
home automation using Arduino by Aditya Prasad
 
chpater16.pptxMMMMMMMMMMMMMMMMMMMMMMMMMMM
chpater16.pptxMMMMMMMMMMMMMMMMMMMMMMMMMMMchpater16.pptxMMMMMMMMMMMMMMMMMMMMMMMMMMM
chpater16.pptxMMMMMMMMMMMMMMMMMMMMMMMMMMM
 
Gravity concentration_MI20612MI_________
Gravity concentration_MI20612MI_________Gravity concentration_MI20612MI_________
Gravity concentration_MI20612MI_________
 
Internet of things -Arshdeep Bahga .pptx
Internet of things -Arshdeep Bahga .pptxInternet of things -Arshdeep Bahga .pptx
Internet of things -Arshdeep Bahga .pptx
 
Input Output Management in Operating System
Input Output Management in Operating SystemInput Output Management in Operating System
Input Output Management in Operating System
 
Robotics-Asimov's Laws, Mechanical Subsystems, Robot Kinematics, Robot Dynami...
Robotics-Asimov's Laws, Mechanical Subsystems, Robot Kinematics, Robot Dynami...Robotics-Asimov's Laws, Mechanical Subsystems, Robot Kinematics, Robot Dynami...
Robotics-Asimov's Laws, Mechanical Subsystems, Robot Kinematics, Robot Dynami...
 
Main Memory Management in Operating System
Main Memory Management in Operating SystemMain Memory Management in Operating System
Main Memory Management in Operating System
 
System Simulation and Modelling with types and Event Scheduling
System Simulation and Modelling with types and Event SchedulingSystem Simulation and Modelling with types and Event Scheduling
System Simulation and Modelling with types and Event Scheduling
 
Energy Awareness training ppt for manufacturing process.pptx
Energy Awareness training ppt for manufacturing process.pptxEnergy Awareness training ppt for manufacturing process.pptx
Energy Awareness training ppt for manufacturing process.pptx
 
DM Pillar Training Manual.ppt will be useful in deploying TPM in project
DM Pillar Training Manual.ppt will be useful in deploying TPM in projectDM Pillar Training Manual.ppt will be useful in deploying TPM in project
DM Pillar Training Manual.ppt will be useful in deploying TPM in project
 
Unit7-DC_Motors nkkjnsdkfnfcdfknfdgfggfg
Unit7-DC_Motors nkkjnsdkfnfcdfknfdgfggfgUnit7-DC_Motors nkkjnsdkfnfcdfknfdgfggfg
Unit7-DC_Motors nkkjnsdkfnfcdfknfdgfggfg
 
Indian Dairy Industry Present Status and.ppt
Indian Dairy Industry Present Status and.pptIndian Dairy Industry Present Status and.ppt
Indian Dairy Industry Present Status and.ppt
 
Comparative study of High-rise Building Using ETABS,SAP200 and SAFE., SAFE an...
Comparative study of High-rise Building Using ETABS,SAP200 and SAFE., SAFE an...Comparative study of High-rise Building Using ETABS,SAP200 and SAFE., SAFE an...
Comparative study of High-rise Building Using ETABS,SAP200 and SAFE., SAFE an...
 
CCS355 Neural Networks & Deep Learning Unit 1 PDF notes with Question bank .pdf
CCS355 Neural Networks & Deep Learning Unit 1 PDF notes with Question bank .pdfCCS355 Neural Networks & Deep Learning Unit 1 PDF notes with Question bank .pdf
CCS355 Neural Networks & Deep Learning Unit 1 PDF notes with Question bank .pdf
 
Class 1 | NFPA 72 | Overview Fire Alarm System
Class 1 | NFPA 72 | Overview Fire Alarm SystemClass 1 | NFPA 72 | Overview Fire Alarm System
Class 1 | NFPA 72 | Overview Fire Alarm System
 
Research Methodology for Engineering pdf
Research Methodology for Engineering pdfResearch Methodology for Engineering pdf
Research Methodology for Engineering pdf
 
Designing pile caps according to ACI 318-19.pptx
Designing pile caps according to ACI 318-19.pptxDesigning pile caps according to ACI 318-19.pptx
Designing pile caps according to ACI 318-19.pptx
 
young call girls in Green Park🔝 9953056974 🔝 escort Service
young call girls in Green Park🔝 9953056974 🔝 escort Serviceyoung call girls in Green Park🔝 9953056974 🔝 escort Service
young call girls in Green Park🔝 9953056974 🔝 escort Service
 

Homework 1 Solutions Chapter 1-2 Problems

  • 1. Homework 1 Due 2/7/2014 Chapter 1 Problem: (1.45) If the water pressure at the base of the water tower shown below is 4.15 bar, determine the pressure of the air trapped above the water level, in bar. The density of the water is 103 kg/m3 and g is 9.81 m/s2 . True or False (1.60) b) Specific volume, the volume per unit mass, is an intensive property while volume and mass are extensive properties. d) If the value of any property of a system changes with time, that system cannot be at steady state (equilibrium). f) According to Archimedes’ principle, the magnitude of the buoyant force acting on a submerged body is equal to the weight of the body. (1.61) a) A refrigerant at an absolute pressure of 0.8 atm is at a gage pressure of 0.2 atm.
  • 2. b) Temperature is the property that is the same for each of two systems when they are in thermal equilibrium. e) A control volume is a special type of closed system that does not interact in any way with its surroundings. Chapter 2 Problems: (2.2) An object whose mass is 400 kg is located at an elevation of 25 m above the surface of the earth. For g = 9.78 m/s2 , determine the gravitational potential energy of the object, in kJ, relative to the surface of the earth. (2.6) An object of mass 1000 kg, initially having a velocity of 100 m/s, decelerates to a final velocity of 20 m/s. What is the change in kinetic energy of the object, in kJ? (2.16) Beginning from rest, an object of mass 200 kg slides down a 10 m ramp. The ramp is inclined at an angle of 40° from the horizontal. If air resistance and friction between the object and the ramp are negligible, determine the velocity of the object, in m/s, at the bottom of the ramp. Let g = 9.81 m/s2 . (2.21) A major force opposing the motion of a vehicle is the rolling resistance of the tires, Fr, given by Fr = fw Where f is a constant called the rolling resistance coefficient and w is the vehicle weight. Determine the power, in kW, required to overcome rolling resistance for a truck weighing 322.5 kN that is moving at 110 km/h. Let f = 0.0069. (2.25) A gas in a piston-cylinder assembly undergoes a process for which the relationship for pressure and volume is pV2 = constant. The initial pressure is 1 bar, the initial volume is 0.1 m3 , and the final pressure is 9 bar. Determine a) the final volume, in m3 , and b) the work for the process, in kJ.
  • 3. (2.31) Air contained within a piston-cylinder is slowly heated. As shown in figure p2.31, during the process the pressure first varies linearly with volume and then remains constant. Determine the total work, in kJ.