HW10_ME235
.pdf
keyboard_arrow_up
School
University of Michigan, Dearborn *
*We aren’t endorsed by this school
Course
ME 230
Subject
Mechanical Engineering
Date
Apr 3, 2024
Type
Pages
5
Uploaded by MinisterEnergy9403 on coursehero.com
THE UNIVERSITY OF MICHIGAN
Department of Mechanical Engineering
ME 235: Thermodynamics I
Section 002 Winter 2022
© Wooldridge 2022
Homework Set #10 - Solutions
18 total points, each section of each problem is worth 2 points
HW#10 topics covered: second law of thermodynamics and Rankine problems
1. In a piston/cylinder, 0.1 kg of water is at 400 °C, 100 kPa. In an isobaric process, the water is
cooled to 100 °C. The heat transfer out of the water is used as a heat source into a heat engine.
The heat engine rejects heat to the atmosphere at 25 °C. The entire system (piston/cylinder and
heat engine) can be considered reversible.
a)
What is the total heat transfer out of the water [kJ]?
b)
What is the work out of the heat engine [kJ]?
Solutions using CATT3
a) Energy equation: m(u
2
- u
1
) =
1
Q
2
-
1
W
2
Entropy equation: m(s
2
- s
1
) =
+ 0
∫
𝑑𝑞
𝑇
Process: P = Constant ⇒
1
W
2
=
P(V
2
- V
1
) = mP(v
2
- v
1
)
∫ ?𝑑𝑉 =
C.V. of piston/cylinder
State 1 of water in cylinder using T1 and P1: s
1
= 9.608 kJ/kgK, h
1
= 3280 kJ/kg
State 2 of water using T2 and P1=P2: s
2
= 8.448 kJ/kgK, h
2
= 2687 kJ/kg
1
Q
2
= m(u
2
- u
1
) +
1
W
2
= m(h
2
- h
1
)
= (0.1 kg)(2687 kJ/kg - 3280 kJ/kg) =
-59.3 kJ
b) C.V. of system (piston/cylinder and heat engine)
Energy equation: m(u
2
- u
1
) = Q
L
-
1
W
2
- W
HE
Entropy equation: m(s
2
- s
1
) =
+ 0
−?
𝐿
𝑇
?𝑚?
Q
L
= mT
amb
(s
2
- s
1
) = (0.1 kg)(298.15 K)(8.448 kJ/kgK - 9.608 kJ/kgK) = -34.585 kJ
W
HE
= (u
2
- u
1
) = - Q
L
-
1
Q
2
= 34.585 + 59.3 =
24.7 kJ
2. Two tanks containing air are connected with a valve. Tank A has 1 kg at 250 kPa, 500 K. Tank
B has 2.5 kg at 150 kPa, 350 K. Assume the tanks are insulated and rigid. The valve opens and
the air equilibrates to a final uniform state without external heat or work transfer.
a)
What is the final T [K]?
b)
What is the final P [kPa]?0.
c)
What is the entropy generated [kJ/K]?
Solutions
C.V. Tank A + Tank B
COM: m
tot
= m
2
= m
A
+ m
B
V
tot
= V
2
= V
A
+ V
B
Energy eq: U
2
- U
1
= m
2
u
2
- m
A
u
A1
- m
B
u
B1
=
1
Q
2
-
1
W
2
= 0
Entropy eq: S
2
- S
1
= m
2
s
2
- m
A
s
A1
- m
B
s
B1
=
1
Q
2
/T +
1
S
2gen
Process eq: V = constant ⇒
1
W
2
= 0, adiabatic ⇒
1
Q
2
= 0
State A
1
:
V
A
= m
A
RT
A1
/P
A1
= (1 kg)(0.287 kJ/kgK)(500 K)/(250 kPa) = 0.574 m
3
State B
1
:
V
B
= m
B
RT
B1
/P
B1
= (2.5 kg)(0.287 kJ/kgK)(350 K)/(150 kPa) = 1.674 m
3
State 2:
m
2
= m
A
+ m
B
= 1 + 2.5 = 3.5 kg
V
2
= V = V
A
+ V
B
= 0.574 + 1.674 = 2.248 m
3
Using energy eq and constant specific heats to find T
2
:
u
2
= (m
A
u
A1
+ m
B
u
B1
)/m
2
⇒
T
2
= (m
A
T
A1
+ m
B
T
B1
)/m
2
= ((1 kg)(500 K) + (2.5 kg)(350 K))/3.5 kg =
393 K = 120 °C
Ideal gas to find P
2
given T
2
:
P
2
= m
2
RT
2
/V = (3.5 kg)(0.287 kJ/kgK)(393 K)/(2.248 m
3
) =
175.6 kPa
Entropy eq to find total entropy generated:
S
2
- S
1
= m
A
[C
p
ln(T
2
/T
A1
) - Rln(P
2
/P
A1
)] + m
B
[C
p
ln(T
2
/T
B1
- Rln(P
2/
P
B1
)]
= (1)[(1.004)ln(393/500) - (0.287)ln(175.6/250)] + (2.5)[(1.004)ln(393/350) - (0.287)ln(175.6/150)]
=
0.037 kJ/K
3. A bronze sphere weighs 25 kg, 5 kg of which is water. The water and sphere are initially
equilibrated and the water inside the sphere is at 3 MPa, 300°C. The entire system cools to an
ambient temperature of 25 °C. What is the entropy generated by cooling the bronze and the water
[kJ/K] ? c
bronze
= 0.4 kJ/(kgK)
Solutions using CATT3
C.V. bronze sphere and water (controlled mass)
Energy eq: U
2
- U
1
=
1
Q
2
-
1
W
2
,
If we assume the sphere doesn't change shape/volume, so there is no expansion or compression work and V
= constant ⇒
1
W
2
, = 0
U
2
- U
1
=
1
Q
2
Entropy eq: S
2
- S
1
=
dQ /T +
1
S
2gen
=
1
Q
2
/T
0
+
1
S
2gen
∫
For water,
From CATT3 output for T1 = 300 oC and P1 = 3 MPa: v
1
= 0.08114 m3/kg, u
1
= 2750 kJ/kg, s
1
= 6.539
kJ/kgK
From CATT3 output for T2 = 25 oC and v
2
= v
1
= 0.08114
⇒
x
2
= 0.001848, u
2
= 109.1 kJ/kg, s
2
= 0.3825
kJ/kgK
1
Q
2
= m
bronze
(u
2
- u
1
)
bronze
+ m
H20
(u
2
- u
1
)
H2O
1
Q
2
= m
bronze
c
bronze
*(T
2
- T
1
) + m
H20
(u
2
- u
1
)
= (20 kg)(0.4 kJ/kgK)(25 - 300 °C) + (5 kg)(109.1 - 2750 kJ/kg) = -15,405 kJ
S
2
- S
1
= m
bronze
(s
2
- s
1
) + m
H20
(s
2
- s
1
)
= (20 kg)(0.4 kJ/kgK)ln(298.15/573.15 K) + (5 kg)(0.3825 - 6.539) = -36.0 kJ/K
1
S
2gen
= S
2
- S
1
-
1
Q
2
/T
0
= -36.0 +15,405/298K =
+15.7 kJ/K
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
- Access to all documents
- Unlimited textbook solutions
- 24/7 expert homework help
Related Questions
dated metncpdf
Thermodynamics An Engineering X
E Module2-chap2propertiesofpure x
O File
C:/Users/DANIEL/Desktop/300L%202ND%20SEMESTER%20MATERIALS/Module2-chap2propertiesofpuresubstances-130703012604 phpap.
ID Page view
A Read aloud
V Draw
H Highlight
O Erase
40
MEC 451 - THERMODYNAMICS
Faculty of Mechanical Engineering, UITM
Supplementary Problems
The pressure in an automobile tire depends on the temperature of the air
in the tire. When the air temperature is 25°C, the pressure gage reads 210
kRa. If the volume of the tire is 0.025 m3, Cetermine the pressure rise in
the tire when the air temperature in the tire rises to 50°C. Also, determine
the amount of air that must be bled off to restore pressure to its original
value at this temperature. Assume the atmospheric pressure is 100 kPa.
[ 26 kPa, 0.007 kg]
1.
A 6 4 2:57 PM
Lucky CORER
144
Tum lock
314
%
8
1/2
24
6
1/4
23
T
K
F
pause
B
arrow_forward
PHYS X PHYS X
印 PHYS X
PHYS X
POTPHYS X
PHYS X
E PHYS X E PHYS
top/semester2/physics%20for%20engineers/PHYS220_CH15_Lecture%20Notes_Problems%2015 19,15.29 S
(D Page view
A Read aloud
V Draw
Problem-15-19: page-475
A 0.500-kg object attached to a spring with a force constant of 8.00 N/m vibrates in simple harmonic motion
with an amplitude of 10.0 cm. Calculate the maximum value of its
(a) speed, and acceleration.
(b) the speed and the acceleration when the object is 6.00 em from the equilibrium position, and
(c) the time interval required for the object to move from.r50 to r5 8.O0 cm.
Solution:
arrow_forward
Task 1
You are a student at the HTU University, the instructor of the fundamental of thermodynamic course
asked you to explain the fundamentals of thermodynamic systems to Grade 10 school students to
help them visualize the importance of thermodynamics in their life starting from their car engine
and moving to the different appliance that they use in their home, discuss the following with school
students:
Q1. What does thermodynamics mean and represent? Give examples from your daily life.
Q2. What is a thermodynamic property? What is the difference between intensive and extensive
properties. Why the density is an intensive property; it is dependent on mass and volume which are
extensive properties, right?.
Q3. What is the difference between energy and heat transfer? Give examples on both.
Q4. What does the first law of thermodynamics state? Give two examples on the first law of
thermodynamics from your daily life.
Q5. Write down the equation of energy balance for closed, open, and…
arrow_forward
Physics 121 Spring 2021 - Document #11: Homework #04 & Reading Assignment page 4 of 8
Problem 1: Gnome Ride - This from a Previous Exam
I.
A Gnome of given mass M goes on the Gnome Ride as follows: He stands on a horizontal
platform that is connected to a large piston so that the platform is driven vertically with a position
as a function of time according to the following equation:
y(t) = C cos(wt)
Here w is a constant given angular frequency, C is a given constant (with appropriate physical
units) and y represents the vertical position, positive upward as indicated.
Part (a) - What is the velocity of the Gnome at time t = 0? Explain your work. Present your
answer in terms of the given parameters
Part (b) – What is the net force on the Gnome at time t = 0? Explain your work. Present your
answer in terms of the given parameters
Part (c) – What is the Normal Force on the Gnome at time t = 0? Explain your work. Present
your answer in terms of the given parameters
Some Possibly Useful…
arrow_forward
Definition, diagrams, equations, & sample problems
合
Test Your Skills 14.1
2. A substance undergoes a polytropic process where n = 1.4. If the final pressure is twice as large as
the initial pressure and the initial temperature is 264 K, find the final temperature in K.
Your answer
arrow_forward
account_circle
Science
PhysicsQ&A LibraryA child’s toy consists of a m = 31 g monkey suspended from a spring of negligible mass and spring constant k. When the toy monkey is first hung on the spring and the system reaches equilibrium, the spring has stretched a distance of x = 17.6 cm, as shown in the diagram. This toy is so adorable you pull the monkey down an additional d = 7.6 cm from equilibrium and release it from rest, and smile with delight as it bounces playfully up and down. 1. Calculate the speed of the monkey, ve, in meters per second, as it passes through equilibrium. 2. Derive an expression for the total mechanical energy of the system as the monkey reaches the top of the motion, Etop, in terms of m, x, d, k, the maximum height above the bottom of the motion, hmax, and the variables available in the palette. 3. Calculate the maximum displacement, h, in centimeters, above the equilibrium position, that the monkey reaches.
A child’s toy consists of a…
arrow_forward
1%17 l. I.
HWZ_23801310677T..
18 at 8:30 AM
Class
Tuesday 12:30PM-2:30PM
& Thursday 8:30AM-10:30AM
Page3
Engineering Mechanics: Statics (EI13)
First Semester, First year. Academic year 2020-2021
Department of Civil Engineering
College of Engineering
Univensity of Misan
Course link on Moodle:
https://www.uomisan.edu.iq/moodle/course/view.php?id=597
Instructor: Dr. Murtada Abass
Assignment Due date:
February 18.2021 at 8:30
AM
F1
act on a brac
as shown in
Figure below.
Determine the magnitude of the resultant force.
F = 100 N
30
20
F = 80 N
Homework Assigument No.2Due February
18 at 8:30 AM
Class time:
Page4
Tuesday 12:30PM-2:30PM
& Thursday 8:30AM-10:30AM
Lngineering Mechanics: Statics (E13)
First Semester. First veur. Acdemic vear 2020-2021
Depurtment of Civil Engineering
College of Enginn
University of Mis
Course link on Moodle
https://www.uomisan.edu.ig/moodle/course/view.php?id=597
Instructor: Dr. Murtada Abass
Assignment Due date:
February 18.2021 at 8:30
AM
arrow_forward
1. For your science fair project, you decided to design a model rocket ship.
The fuel burns exerting a time-varying force on the small 2.00 kg rocket
model during its vertical launch. This force obeys the equation F= A + Bt2.
Measurements show that at t=0, the force is 25.0 N, and at the end of the
first 2.00 s, it is 45.0 N. Assume that air resistance is negligible.
a. What are the forces acting on the rocket?
b. Draw its free-body diagram.
c. Find the constants A and B, including their SI units using this
equation F= A + Bt².
d. Find the net force on this rocket and its acceleration the instant after
the fuel ignites.
e. Find the net force on this rocket and its acceleration 3.00 s after fuel
ignition.
f. Suppose you were using this rocket in outer space, far from all gravity.
What would its acceleration be 3.00 s after fuel ignition?
g. What is the rocket's mass in outer space? What is its weight?
arrow_forward
Thermodynamics
Chapter 3
Complete the following table for water demonstrate clearly how you are getting the answers.
arrow_forward
THERMODYNAMICS
TOPIC: FIRST LAW OF THERMO/THERMODYNAMIC SYSTEM
SOLVE COMPLETELY.
AND PLEASE DRAW A DIAGRAM WITH YOUR SOLUTION.
THANK YOU
arrow_forward
Subject : Combustion Engineering
Please provide schematic diagram and complete solutions with formulas.
A 650 BHP diesel engine uses fuel oil of 28 degree API gravity, fuel consumption is 0.65 lb/Bhp-hr. Cost of fuel is P7.95/L. Determine the minimum volume of cubical day tank in cu.cm, ambient temperature is 45 degrees C.
arrow_forward
MSc.Saif Saiwan
Chapter 1
BETC
Problem to solve by yourself
1-Convert
the following temperature to
their values
the
on
Fahrenheit and Kelvin scales: (a) the sublimation point of dry ice -
78.5 °C. (b) Human body temperature, 37 °C.
2-The temperature difference between the inside and the outside
of a home on cold winter day is 57 °F. Express this difference on
(a) the Celsius scale and ( b) the Kelvin scale.
3-Liquid nitrogen has a boiling point of -195.81 °C at atmospheric
pressure. Express this temperature (a) in degrees Fahrenheit and
(b) in Kelvin.
10
>
arrow_forward
ECO
5. AUTOMOTIVE. The power an
engine produces is called
horsepower. In mathematical
terms, one horsepower is the
power needed to move 550
pounds one foot in one
second, or the power needed
to move 33,000 pounds one
foot in one minute. Power, in
physics, is defined simply as
the rate of doing work. The
formula below gives the
horsepower at 5,252 radians
per second.
https://philkotse.com/toyota-corona-ior-sale-in-baguio/1991-for-sale-in-aid7017151
625T
1313
where H is the horsepower and T is the torque
a. Find the inverse of the model.
b. If a taxi produces a horsepower of 200, what is the torque it generates?
Solve here:
arrow_forward
SEMIFINAL EXAMINATION IN ME 3215
COMBUSTION ENGINEERING
PROBLEM:
20.6 kmols Oxygen
If gasoline fuel is approximated by the formula C3H18 , in an atmosphere of
794 kmol nitrogen
Calculate the following:
kg air
kmol air
(a) Determine the molecular mass of the air, in -
(b) Determine the molecular mass of C3H18, in-
kg CaH18
kmol Ce H18
(c) Determine the theoretical Air/Fuel Ratio by Volume (m³air/m³ fuel) with both reactants
having the same Temperatures.
kg air
kg CH18
(d) Solve for the Air/fuel Ratio by mass, in
arrow_forward
4. For each of the situations in trie lapie welow, state the process by
which heat is transferred.
Getting burnt by touching a hot stove
Hot air rising, cooling and falling
Heat from a campfire when you are seated beside it
Ice cooling down your hand
Heat from the Sun warming your face
Boiling water by thrusting a red-hot piece of iron into it
A slice of bread placed undera red-hot electric grill to make toast
Heating a tin can of water using a Bunsen burner
arrow_forward
Hello, I am a mechanical engineering student and want to upload this question as I have an exam in early June about thermodynamics. I have been given a question that will help me answer my exams in June. Please could you answer showing step by step guidance on how to answer this question with the formula clearly shown.
Thank you very much
arrow_forward
Berserk - Chapter 2- Read Berserk
compressor.
reggienet.illinoisstate.edu
https://reggienet.illinoisstate.edu/access/content/attachment/f6b18576-acf9-...
Hint. Both power-sizing and indexing will be used.
Ć
+
Question 3. The purchase price of a natural gas-fired commercial boiler (capacity X) was $181,000 eight years
ago. Another boiler of the same basic design, except with the capacity 1.42X, is currently being considered for
purchase. If it is purchased, some optional features presently costing $28,000 would be added for your
application. If the cost index was 162 for this type of equipment when the capacity X boiler was purchased and
is 221 now, and the applicable cost capacity factor is 0.8, what is your estimate of the purchase price for the
new boiler?
Hint: Use both indexing and power-sizing methods.
88
Illinois State University: TEC 330 001 FA2022 - Applied Economic Analysis For...
arrow_forward
Thermodynamics: Please show me how to solve the problem written below. And how do you get the answer for the certain problem please show me step by step Thank you!
arrow_forward
F(t)
Force_Crate
Known values:
Mass of Block
68 kg
TT
Hs μk
0
0.63 0.53 26°
Problem Statement:
A crate is initially at rest on a sloped surface, when a force is applied: F(t)
where t is in seconds.
Answers:
When t=44.47 seconds, the crate has not yet started moving.
Find the magnitude of the friction force at that time:
317.771 N
The direction of the friction force at that time is: down the slope
Find the time required for the crate to start moving:
Find the crate's speed when t=174.9 s: 9.485 m/s
Be sure to include units with your answers.
169.756 S
240+0.2 N,
arrow_forward
XYZ Company Ltd has consulted your firm Zig-Zag Energy over an intention to generate electricity in Ghana. Being the senior project engineer for Zig-Zag Energy, management has asked you to prepare a detailed technical report in respect to the project.
a) Discuss the major factors to take into consideration when consulting on such projects.
A tank containing air is stirred by a paddle wheel.
The work input to the paddle wheels is 2000KJ and the heat transferred to the surrounding from the tank is 6000KJ.
b) Determine the change in the internal energy of the system
There has been a sharp differences between the board of Blue-Blue Energy over which of the energy sources (hydroelectric power plant-HEP and Coal fired plant) is best for power generation. As an energy expert, you were confronted by the debating faction for your opinion. You…
arrow_forward
A group of twenty executives attend a board meeting in a room that measures 20 feet by 20 feet and has a 10-foot ceiling. Suppose each person occupies 2.5 feet and gives out about 375 BTUs of heat per hour. Calculate the temperature rise that occurs within 20 minutes of the start of the conference if the room is completely sealed and insulated, Take c for air as 0.1825 BTU / Lbmd Ibm ° F.
arrow_forward
Site: ENGG251 (S122) Mechanics
moodle.uowplatform.edu.au/mod/quiz/secured.php#lockdown
S PowerPoint Presentation
Slide 1
S
M Gmail
Final exam (Remotely Procto
Question 1.1
1
d
A steel rod, shown in Figure Q1.1, is subjected to a uniform tension force P. Which one of the following statements is correct? Note: d is
the rod diameter, v is the Poisson's ratio and E is the modulus of elasticity.
Figure Ql.1
O a.
4P
The elongation is given by
Επd2
O b. The diameter increases.
4P
O C.
Επd2
The lateral strain in the y-direction is given by
Od. There is no strain in the y-direction
Question 1.2
A material has a modulus of elasticity E Proctorio is sharing your
out of
Jestion
8=
e' = -v
Quiz Too
arrow_forward
= 14
15
16
17
18
19
20
21
22
23
24
25
26
A gas storage cylinder in an ordinary chemical laboratory measures 3.9 cm wide and 16. cm high.
This is the label on it.
olo
Contents: N, gas
Pressure: 7.93 atm
If the cylinder is opened and the gas allowed to escape into a large empty plastic bag, what will be the final volume of nitrogen gas, including what's collected in
the plastic bag and what's left over in the cylinder? Write your answer in liters. Round your answer to 2 significant digits.
?
arrow_forward
Course dashboard
4 Qui
"The entropy of an ideal gas depends on
1
Which of the following is proper for the blank
8
Select one:
13 14
O only pressure
19 20
O both temperature and pressure
25 26 2
O only specific volume change
O both specific volume change and temperature
31
32 33
O only temperature
37
38 39
43 44
45
NEXT PAGE
Finish attempt
arrow_forward
THERMODYNAMICS: Mollier Diagram: Steam Table
Using the Steam Table below, find Δhf and Δhg in BTU/lbm and Δsf and Δsg in kJ/kgm-K and for the following parameters:
P1 = 9.5 kgf/cm2
P2 = 15 kgf/cm2
With step by step explanation pls
NOTE: This table uses SI unit as stated below:
Pressure: MPa
Temperature: °C
Internal Energy and Enthalpy: kJ/kgm
Entropy: kJ/kgm-K
arrow_forward
PLTW Engineering
Activity 3.8 Precision and Accuracy of
Measurement
Introduction
This concept of random and systematic errors is related to the precision and accuracy
of measurements. Precision characterizes the system's probability of providing the
same result every time a sample is measured (related to random error). Accuracy
characterizes the system's ability to provide a mean close to the true value when a
sample is measured many times (related to systematic error). We can determine the
precision of a measurement instrument by making repeated measurements of the same
sample and calculating the standard deviation of those measurements. However, we
will not be able to correct any single measurement due to a low precision instrument.
Simply stated, the effects of random uncertainties can be reduced by repeated
measurement, but it is not possible to correct for random errors.
We can determine the accuracy of a measurement instrument by comparing the
experimental mean of a large number…
arrow_forward
Draw and discuss the FBD for the following system.
• Label all forces and directions.
How many unknowns are there? (Remember, an unknown does not have to be a force. It
can also be a dimension, angle, etc.)
• How many equilibrium equations can you create?
• Is there enough information to solve for the unknowns? Explain.
●
Draw pulley A as your particle.
B
20°
A
100 N
F
arrow_forward
SEE MORE QUESTIONS
Recommended textbooks for you
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
Related Questions
- dated metncpdf Thermodynamics An Engineering X E Module2-chap2propertiesofpure x O File C:/Users/DANIEL/Desktop/300L%202ND%20SEMESTER%20MATERIALS/Module2-chap2propertiesofpuresubstances-130703012604 phpap. ID Page view A Read aloud V Draw H Highlight O Erase 40 MEC 451 - THERMODYNAMICS Faculty of Mechanical Engineering, UITM Supplementary Problems The pressure in an automobile tire depends on the temperature of the air in the tire. When the air temperature is 25°C, the pressure gage reads 210 kRa. If the volume of the tire is 0.025 m3, Cetermine the pressure rise in the tire when the air temperature in the tire rises to 50°C. Also, determine the amount of air that must be bled off to restore pressure to its original value at this temperature. Assume the atmospheric pressure is 100 kPa. [ 26 kPa, 0.007 kg] 1. A 6 4 2:57 PM Lucky CORER 144 Tum lock 314 % 8 1/2 24 6 1/4 23 T K F pause Barrow_forwardPHYS X PHYS X 印 PHYS X PHYS X POTPHYS X PHYS X E PHYS X E PHYS top/semester2/physics%20for%20engineers/PHYS220_CH15_Lecture%20Notes_Problems%2015 19,15.29 S (D Page view A Read aloud V Draw Problem-15-19: page-475 A 0.500-kg object attached to a spring with a force constant of 8.00 N/m vibrates in simple harmonic motion with an amplitude of 10.0 cm. Calculate the maximum value of its (a) speed, and acceleration. (b) the speed and the acceleration when the object is 6.00 em from the equilibrium position, and (c) the time interval required for the object to move from.r50 to r5 8.O0 cm. Solution:arrow_forwardTask 1 You are a student at the HTU University, the instructor of the fundamental of thermodynamic course asked you to explain the fundamentals of thermodynamic systems to Grade 10 school students to help them visualize the importance of thermodynamics in their life starting from their car engine and moving to the different appliance that they use in their home, discuss the following with school students: Q1. What does thermodynamics mean and represent? Give examples from your daily life. Q2. What is a thermodynamic property? What is the difference between intensive and extensive properties. Why the density is an intensive property; it is dependent on mass and volume which are extensive properties, right?. Q3. What is the difference between energy and heat transfer? Give examples on both. Q4. What does the first law of thermodynamics state? Give two examples on the first law of thermodynamics from your daily life. Q5. Write down the equation of energy balance for closed, open, and…arrow_forward
- Physics 121 Spring 2021 - Document #11: Homework #04 & Reading Assignment page 4 of 8 Problem 1: Gnome Ride - This from a Previous Exam I. A Gnome of given mass M goes on the Gnome Ride as follows: He stands on a horizontal platform that is connected to a large piston so that the platform is driven vertically with a position as a function of time according to the following equation: y(t) = C cos(wt) Here w is a constant given angular frequency, C is a given constant (with appropriate physical units) and y represents the vertical position, positive upward as indicated. Part (a) - What is the velocity of the Gnome at time t = 0? Explain your work. Present your answer in terms of the given parameters Part (b) – What is the net force on the Gnome at time t = 0? Explain your work. Present your answer in terms of the given parameters Part (c) – What is the Normal Force on the Gnome at time t = 0? Explain your work. Present your answer in terms of the given parameters Some Possibly Useful…arrow_forwardDefinition, diagrams, equations, & sample problems 合 Test Your Skills 14.1 2. A substance undergoes a polytropic process where n = 1.4. If the final pressure is twice as large as the initial pressure and the initial temperature is 264 K, find the final temperature in K. Your answerarrow_forwardaccount_circle Science PhysicsQ&A LibraryA child’s toy consists of a m = 31 g monkey suspended from a spring of negligible mass and spring constant k. When the toy monkey is first hung on the spring and the system reaches equilibrium, the spring has stretched a distance of x = 17.6 cm, as shown in the diagram. This toy is so adorable you pull the monkey down an additional d = 7.6 cm from equilibrium and release it from rest, and smile with delight as it bounces playfully up and down. 1. Calculate the speed of the monkey, ve, in meters per second, as it passes through equilibrium. 2. Derive an expression for the total mechanical energy of the system as the monkey reaches the top of the motion, Etop, in terms of m, x, d, k, the maximum height above the bottom of the motion, hmax, and the variables available in the palette. 3. Calculate the maximum displacement, h, in centimeters, above the equilibrium position, that the monkey reaches. A child’s toy consists of a…arrow_forward
- 1%17 l. I. HWZ_23801310677T.. 18 at 8:30 AM Class Tuesday 12:30PM-2:30PM & Thursday 8:30AM-10:30AM Page3 Engineering Mechanics: Statics (EI13) First Semester, First year. Academic year 2020-2021 Department of Civil Engineering College of Engineering Univensity of Misan Course link on Moodle: https://www.uomisan.edu.iq/moodle/course/view.php?id=597 Instructor: Dr. Murtada Abass Assignment Due date: February 18.2021 at 8:30 AM F1 act on a brac as shown in Figure below. Determine the magnitude of the resultant force. F = 100 N 30 20 F = 80 N Homework Assigument No.2Due February 18 at 8:30 AM Class time: Page4 Tuesday 12:30PM-2:30PM & Thursday 8:30AM-10:30AM Lngineering Mechanics: Statics (E13) First Semester. First veur. Acdemic vear 2020-2021 Depurtment of Civil Engineering College of Enginn University of Mis Course link on Moodle https://www.uomisan.edu.ig/moodle/course/view.php?id=597 Instructor: Dr. Murtada Abass Assignment Due date: February 18.2021 at 8:30 AMarrow_forward1. For your science fair project, you decided to design a model rocket ship. The fuel burns exerting a time-varying force on the small 2.00 kg rocket model during its vertical launch. This force obeys the equation F= A + Bt2. Measurements show that at t=0, the force is 25.0 N, and at the end of the first 2.00 s, it is 45.0 N. Assume that air resistance is negligible. a. What are the forces acting on the rocket? b. Draw its free-body diagram. c. Find the constants A and B, including their SI units using this equation F= A + Bt². d. Find the net force on this rocket and its acceleration the instant after the fuel ignites. e. Find the net force on this rocket and its acceleration 3.00 s after fuel ignition. f. Suppose you were using this rocket in outer space, far from all gravity. What would its acceleration be 3.00 s after fuel ignition? g. What is the rocket's mass in outer space? What is its weight?arrow_forwardThermodynamics Chapter 3 Complete the following table for water demonstrate clearly how you are getting the answers.arrow_forward
- THERMODYNAMICS TOPIC: FIRST LAW OF THERMO/THERMODYNAMIC SYSTEM SOLVE COMPLETELY. AND PLEASE DRAW A DIAGRAM WITH YOUR SOLUTION. THANK YOUarrow_forwardSubject : Combustion Engineering Please provide schematic diagram and complete solutions with formulas. A 650 BHP diesel engine uses fuel oil of 28 degree API gravity, fuel consumption is 0.65 lb/Bhp-hr. Cost of fuel is P7.95/L. Determine the minimum volume of cubical day tank in cu.cm, ambient temperature is 45 degrees C.arrow_forwardMSc.Saif Saiwan Chapter 1 BETC Problem to solve by yourself 1-Convert the following temperature to their values the on Fahrenheit and Kelvin scales: (a) the sublimation point of dry ice - 78.5 °C. (b) Human body temperature, 37 °C. 2-The temperature difference between the inside and the outside of a home on cold winter day is 57 °F. Express this difference on (a) the Celsius scale and ( b) the Kelvin scale. 3-Liquid nitrogen has a boiling point of -195.81 °C at atmospheric pressure. Express this temperature (a) in degrees Fahrenheit and (b) in Kelvin. 10 >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 PressMechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSONThermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
- Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEYMechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage LearningEngineering 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