
EBK FUNDAMENTALS OF THERMAL-FLUID SCIEN
5th Edition
ISBN: 9781259151323
Author: CENGEL
Publisher: MCGRAW HILL BOOK COMPANY
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 16, Problem 72P
To determine
The money lost through the roof that night during a 14-hour period.
Expert Solution & Answer

Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
oyfr
3. The figure shows a frame under the
influence of an external loading made up
of five forces and two moments. Use the
scalar method to calculate moments.
a. Write the resultant force of the
external loading in Cartesian vector
form.
b. Determine the
& direction
of the resultant moment of the
external loading about A.
15 cm
18 cm
2.2 N-m
B
50 N
45°
10 cm
48 N.m
250 N
60 N
20
21
50 N
25 cm
100 N
A
118,
27cm 5, 4:1
The 2-mass system shown below depicts a disk which rotates about its center and has rotational
moment of inertia Jo and radius r. The angular displacement of the disk is given by 0. The spring
with constant k₂ is attached to the disk at a distance from the center. The mass m has linear
displacement & and is subject to an external force u. When the system is at equilibrium, the spring
forces due to k₁ and k₂ are zero. Neglect gravity and aerodynamic drag in this problem. You may
assume the small angle approximation which implies (i) that the springs and dampers remain in
their horizontal / vertical configurations and (ii) that the linear displacement d of a point on the
edge of the disk can be approximated by d≈re.
Ө
K2
www
m
4
Cz
777777
Jo
Make the following assumptions when analyzing the forces and torques:
тв
2
0>0, 0>0, x> > 0, >0
Derive the differential equations of motion for this dynamic system. Start by sketching
LARGE and carefully drawn free-body-diagrams for the disk and the…
A linear system is one that satisfies the principle of superposition. In other words, if an input u₁
yields the output y₁, and an input u2 yields the output y2, the system is said to be linear if a com-
bination of the inputs u = u₁ + u2 yield the sum of the outputs y = y1 + y2.
Using this fact, determine the output y(t) of the following linear system:
given the input:
P(s) =
=
Y(s)
U(s)
=
s+1
s+10
u(t) = e−2+ sin(t)
=e
Chapter 16 Solutions
EBK FUNDAMENTALS OF THERMAL-FLUID SCIEN
Ch. 16 - Prob. 1PCh. 16 - Judging from its unit W/m·K, can we define thermal...Ch. 16 - Which is a better heat conductor, diamond or...Ch. 16 - How do the thermal conductivity of gases and...Ch. 16 - Why is the thermal conductivity of superinsulation...Ch. 16 - Why do we characterize the heat conduction ability...Ch. 16 - Consider an alloy of two metals whose thermal...Ch. 16 - What are the mechanisms of heat transfer? How are...Ch. 16 - Write down the expressions for the physical laws...Ch. 16 - How does heat conduction differ from convection?
Ch. 16 - Does any of the energy of the sun reach the earth...Ch. 16 - How does forced convection differ from natural...Ch. 16 - What is the physical mechanism of heat conduction...Ch. 16 - Consider heat transfer through a windowless wall...Ch. 16 - Consider heat loss through the two walls of a...Ch. 16 - Consider two houses that are identical, except...Ch. 16 - Consider two walls of a house that are identical...Ch. 16 - Define emissivity and absorptivity. What is...Ch. 16 - What is a blackbody? How do real bodies differ...Ch. 16 - A wood slab with a thickness of 0.05 m is...Ch. 16 - The inner and outer surfaces of a 4-m × 7-m brick...Ch. 16 - The inner and outer surfaces of a 0.5-cm thick 2-m...Ch. 16 - An aluminum pan whose thermal conductivity is 237...Ch. 16 - The north wall of an electrically heated home is...Ch. 16 - In a certain experiment, cylindrical samples of...Ch. 16 - One way of measuring the thermal conductivity of a...Ch. 16 - A concrete wall with a surface area of 20 m2 and a...Ch. 16 - A hollow spherical iron container with outer...Ch. 16 - The inner and outer glasses of a 4-ft × 4-ft...Ch. 16 - An engineer who is working on the heat transfer...Ch. 16 - Air at 20°C with a convection heat transfer...Ch. 16 - Four power transistors, each dissipating 12 W, are...Ch. 16 - In a power plant, pipes transporting superheated...Ch. 16 - An electric current of 5 A passing through a...Ch. 16 - Hot air at 80°C is blown over a 2-m × 4-m flat...Ch. 16 - A 5-cm-external-diameter, 10-m-long hot-water pipe...Ch. 16 - A transistor with a height of 0.4 cm and a...Ch. 16 - A 300-ft-long section of a steam pipe whose outer...Ch. 16 - The boiling temperature of nitrogen at atmospheric...Ch. 16 - Repeat Prob. 16–43 for liquid oxygen, which has a...Ch. 16 - A series of experiments were conducted by passing...Ch. 16 - A 2.1-m-long, 0.2-cm-diameter electrical wire...Ch. 16 - Using the conversion factors between W and Btu/h,...Ch. 16 - The outer surface of a spacecraft in space has an...Ch. 16 - Consider a person whose exposed surface area is...Ch. 16 - Consider a sealed 20-cm-high electronic box whose...Ch. 16 - Two surfaces, one highly polished and the other...Ch. 16 - A spherical interplanetary probe, with a diameter...Ch. 16 - An electronic package in the shape of a sphere...Ch. 16 - Can all three modes of heat transfer occur...Ch. 16 - Can a medium involve (a) conduction and...Ch. 16 - The deep human body temperature of a healthy...Ch. 16 - We often turn the fan on in summer to help us...Ch. 16 - Consider a 20 cm thick granite wall with a thermal...Ch. 16 - A solid plate, with a thickness of 15 cm and a...Ch. 16 - Air at 20°C with a convection heat transfer...Ch. 16 - An electronic package with a surface area of 1 m2...Ch. 16 - Consider steady heat transfer between two large...Ch. 16 - Consider a person standing in a room at 18°C....Ch. 16 - The inner and outer surfaces of a 25-cm-thick wall...Ch. 16 - A 2-in-diameter spherical ball whose surface is...Ch. 16 - An 800-W iron is left on the iron board with its...Ch. 16 - A 3-m-internal-diameter spherical tank made of...Ch. 16 - Solar radiation is incident on a 5 m2 solar...Ch. 16 - A flat-plate solar collector is used to heat water...Ch. 16 - The roof of a house consists of a 22-cm-thick...Ch. 16 - Consider a flat-plate solar collector placed...Ch. 16 - An AISI 304 stainless steel sheet is going through...Ch. 16 - Engine valves (cp = 440 J/kg·K and = 7840 kg/m3)...Ch. 16 - A cylindrical resistor element on a circuit board...Ch. 16 - The heat generated in the circuitry on the surface...Ch. 16 - A 0.3-cm-thick, 12-cm-high, and 18-cm-long circuit...Ch. 16 - A 40-cm-long, 800-W electric resistance heating...Ch. 16 - It is well known that wind makes the cold air feel...Ch. 16 - An engine block with a surface area measured to be...Ch. 16 - Consider an electrical wire submerged in liquid...Ch. 16 - A cylindrical fuel rod of 2 cm in diameter is...Ch. 16 - Consider a person standing in a room maintained at...Ch. 16 - Consider a 3-m × 3-m × 3-m cubical furnace whose...Ch. 16 - A soldering iron has a cylindrical tip of 2.5 mm...Ch. 16 - A thin metal plate is insulated on the back and...Ch. 16 - Consider a flat-plate solar collector placed on...Ch. 16 - An electric heater with the total surface area of...
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 manometer fluid in the figure given below is mercury where D = 3 in and h = 1 in. Estimate the volume flow in the tube (ft3/s) if the flowing fluid is gasoline at 20°C and 1 atm. The density of mercury and gasoline are 26.34 slug/ft3 and 1.32 slug/ft3 respectively. The gravitational force is 32.2 ft/s2.arrow_forwardUsing the Bernoulli equation to find the general solution. If an initial condition is given, find the particular solution. y' + xy = xy¯¹, y(0) = 3arrow_forwardTest for exactness. If exact, solve. If not, use an integrating factor as given or obtained by inspection or by the theorems in the text. a. 2xydx+x²dy = 0 b. (x2+y2)dx-2xydy = 0 c. 6xydx+5(y + x2)dy = 0arrow_forward
- Newton's law of cooling. A thermometer, reading 5°C, is brought into a room whose temperature is 22°C. One minute later the thermometer reading is 12°C. How long does it take until the reading is practically 22°C, say, 21.9°C?arrow_forwardSolve a. y' + 2xy = ex-x² b. y' + y sin x = ecosx, y(0) = −1 y(0) = −2.5arrow_forward= MMB 241 Tutorial 3.pdf 2/6 90% + + 5. The boat is traveling along the circular path with a speed of v = (0.0625t²) m/s, where t is in seconds. Determine the magnitude of its acceleration when t = 10 s. 40 m v = 0.0625² 6. If the motorcycle has a deceleration of at = (0.001s) m/s² and its speed at position A is 25 m/s, determine the magnitude of its acceleration when it passes point B. .A 90° 300 m n B 2arrow_forward
- = MMB 241 Tutorial 3.pdf 4/6 67% + 9. The car is traveling along the road with a speed of v = (2 s) m/s, where s is in meters. Determine the magnitude of its acceleration when s = 10 m. v = (2s) m/s 50 m 10. The platform is rotating about the vertical axis such that at any instant its angular position is u = (4t 3/2) rad, where t is in seconds. A ball rolls outward along the radial groove so that its position is r = (0.1+³) m, where t is in seconds. Determine the magnitudes of the velocity and acceleration of the ball when t = 1.5s.arrow_forwardThe population of a certain country is known to increase at a rate proportional to the number of people presently living in the country. If after two years the population has doubled, and after three years the population is 20,000, estimate the number of people initially living in the country.arrow_forward= MMB 241 Tutorial 3.pdf 6/6 100% + | 日 13. The slotted link is pinned at O, and as a result of the constant angular velocity *= 3 rad/s it drives the peg P for a short distance along the spiral guide r = (0.40) m, where 0 is in radians. Determine the radial and transverse components of the velocity and acceleration of P at the instant = 1/3 rad. 0.5 m P r = 0.40 =3 rad/sarrow_forward
- = MMB 241 Tutorial 3.pdf 1/6 90% + DYNAMICS OF PARTICLES (MMB 241) Tutorial 3 Topic: Kinematics of Particles:- Path and Polar coordinate systems and general curvilinear QUESTIONS motion. 1. Determine the acceleration at s = 2 m if v = (2 s) m/s², where s is in meters. At s = 0, v = 1 m/s. 3 m 2. Determine the acceleration when t=1s if v = (4t2+2) m/s, where t is in seconds. v=(4²+2) m/s 6 marrow_forward5.112 A mounting bracket for electronic components is formed from sheet metal with a uniform thickness. Locate the center of gravity of the bracket. 0.75 in. 3 in. ༧ Fig. P5.112 1.25 in. 0.75 in. y r = 0.625 in. 2.5 in. 1 in. 6 in. xarrow_forward4-105. Replace the force system acting on the beam by an equivalent resultant force and couple moment at point B. A 30 in. 4 in. 12 in. 16 in. B 30% 3 in. 10 in. 250 lb 260 lb 13 5 12 300 lbarrow_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
Understanding Conduction and the Heat Equation; Author: The Efficient Engineer;https://www.youtube.com/watch?v=6jQsLAqrZGQ;License: Standard youtube license