Thinking Like an Engineer: An Active Learning Approach (4th Edition)
4th Edition
ISBN: 9780134639673
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
Textbook Question
Chapter 7, Problem 35RQ
Based on the following equation, express the unknown variable in terms of fundamental dimensions.
q, in the expression: L = ε P2 + q
where
L [=] candela per cubic foot minute [cd/(ft3 min)]
P [=] pascals [Pa]
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
physical quantities m, r, u, a, and t with dimensions [m] = M, [r]= L, [v] = LT, [a] = LT-2, and [t] = T.
Enter the dimensional expression of the quantity on the right-hand side of each equation. Your answers may contain only M, L,
T, and exponents.
Assume that each of the following equations is dimensionally consistent.
F = ma
[F] =
A heat generating slab with thermal conductivity of k [W/m-K] and heat
generation rate d" [W/m³] is perfectly insulated on the left side (x = 0)
.
h1
and is exposed to air with ambient temperature T1 [K] and convection
coefficient of hi [W/m²-K] on the right as shown in Fig. 1. Neglect
Air
Slab
radiation. Find out the temperature distribution (i.e., temperature as
X= ()
a function of x) within the slab in terms of the variables shown in the
Figure 1:
Note
the
figure.
indicated
positive
direction for reference.
SPerfect Insulation
An automobile's power is proportional to the cube of its speed on a level road in still air. This relationship between speed and engine power for the Gofaster model XP9 is:
[mph]3 = 9600 [hp].
The XP9 has a 180 hp engine.
What is its max speed on a level road in still air?
Chapter 7 Solutions
Thinking Like an Engineer: An Active Learning Approach (4th 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 - Determine the fundamental dimensions of the...Ch. 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 - A basketball has a diameter of approximately 27...Ch. 7.8 - Eclipses, both solar and lunar, follow a cycle of...Ch. 7 - Express the following values using scientific...Ch. 7 - Express the following values using scientific...Ch. 7 - Express the following values using scientific...Ch. 7 - Complete the following table.Ch. 7 - Complete the following table.Ch. 7 - Which of the following is the longest distance? A....Ch. 7 - Complete the following table.Ch. 7 - Which of the following is the largest volume? A....Ch. 7 - Complete the following table.Ch. 7 - Which of the following is the fastest speed? A. 50...Ch. 7 - Complete the following table. gallons per minute...Ch. 7 - Which of the following is the largest mass...Ch. 7 - Which of the following is the largest volumetric...Ch. 7 - In China, one "bu" is 1.66 meters [m]. The average...Ch. 7 - On April20, 2010, the DeepWater Horizon oil...Ch. 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 - Determine the fundamental dimensions of the...Ch. 7 - Identify the following quantities through the use...Ch. 7 - Football helmet safety is a current focus of...Ch. 7 - For each equation listed, indicate if the equation...Ch. 7 - What are the dimensions of the coefficient (k) in...Ch. 7 - When shipping freight around the world, most...Ch. 7 - A circular window has a 10-inch [in] radius. What...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 - In many engineering uses, the value of "g," the...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 - A category F5 tornado can have wind speeds of 300...Ch. 7 - Some species of bamboo have been measured to grow...Ch. 7 - A new hybrid automobile with regenerative braking...Ch. 7 - If a liquid evaporates at a rate of 50 kilograms...Ch. 7 - Acetone must be kept in a closed pressure tank due...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 - On April 20, 2010, the DeepWater Horizon oil...Ch. 7 - One of the National Academy of Engineering Grand...Ch. 7 - The board foot is often used as a measure of...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 grain is a unit of mass equal to 64.8...Ch. 7 - The hand [hh] is a traditional unit for measuring...Ch. 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 - The Units Society Empire (USE) had defined the...Ch. 7 - Many common quantities with derived units do not...Ch. 7 - Electrical ficld (E) [V /m]Ch. 7 - Acoustic impedance (Z) [Pa s/m]Ch. 7 - Magnetic permeability ()[V S / A]Ch. 7 - Ideal gas" constant (R) [atm L/(mol K )]Ch. 7 - Stefan-Boltzmann constant () [W I (m2K4)]Ch. 7 - Analyze l he following term using fundamental...Ch. 7 - We wish to analyze the velocity of a fluid exiting...Ch. 7 - Wind energy uses large fans to extract energy from...Ch. 7 - Based on the following equation, express the...Ch. 7 - Based on the following equation, express the...Ch. 7 - Based on the following equation, express the...Ch. 7 - Based on the following equation, answer the...Ch. 7 - Based on the following equation, answer the...Ch. 7 - Based on the following equation, answer the...Ch. 7 - A dust collection system operates using the...Ch. 7 - Determine if the following expression is a valid...Ch. 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 - A box has a volume of 10 gallons [gal]. If two...Ch. 7 - A 1 25-gallon [gal] quantity of molten (liquefied)...Ch. 7 - In American football, the playing field is 53.33...Ch. 7 - For almost four millennia, the Pyramid of Khufu...Ch. 7 - A torus is essentially a tube wrapped into a circ...Ch. 7 - In many engineering uses, the value of "g," the...
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
- A graphing calculator is recommended. If a rock is thrown upward on the planet Mars with a velocity 8 m/s, its height in meters t seconds later is given by y (a) Find the average velocity (in m/s) over the given time intervals. (i) [1, 2] (ii) [1, 1.5] (iii) [1, 1.1] (iv) [1, 1.01] (v) [1, 1.001] m/s m/s m/s m/s m/s (b) Use your answers from part (a) to estimate the instantaneous velocity of the rock (in m/s) when t = 1. m/s = 8t - 1.86t². (Round your answers to two decimal places.)arrow_forwardSolving dynamics problems in steps: 1. Collect data and assumptions 2. Desired result? 3. Make drawing/sketch of the (sub)problem 4. Equations and calculations 5. Answer and conclusions Furthermore: - Write down the steps clearly Check intermediate results (accuracy) Dimension check and units! Magnitude of number in line with expectation?arrow_forward1.1 s) The overall size of the system (i.e. the shell) is 5.8 inch ID and a 27-inch long tube section. Assuming tubes are 1/2 inch in diameter (ignore thickness) and that the tubes are spaced with 1/4 inch between them. Estimate the number of tubes that will fit in the shell. O 36 O 60 O 13 O 46 QUESTION 2 1.22 area [ft²]. Og ft² 5 ft² O 17.66 ft2 10.6 ft2 Regardless of your answer to part 1.1, use 36 as the number of tubes and estimate the total heat transferarrow_forward
- A member of your team gives you the following MATLAB program. Your job is to create the function used in the program. H = 30; % height [cm] V = 50; % volume [cm^3] % calculates the radius [cm] of a cone R2 = RadiusCone(H,V);arrow_forwardCheck the following equation for dimensional homogeneity: mv = [₁² ( (Fcose) dt where m is mass, v is velocity, F is force, 0 is an angle, and t is time. Check that each term in the equation has the following dimensions: [MªLºTc] where you are to choose the coefficients a, b, c. Answers: a = i b= i C = iarrow_forward1. While researching fluid dynamics, you come across a reference to the dimensionless number called the Laplace number, given by the equation below. SpL La = where: kg p= fluid density [=]: m3 H= fluid viscosity [=]- m-S L = length [=] ft What are the dimensions for delta, &?arrow_forward
- Air A Water Calculate the gauge pressure, in kPa, at A, B, C, D in the reservoirs shown above. (Note that the reservoirs between A and B are connected.) Problem parameters: h1 = 1.1 [m] h2 = 0.3 [m] h3 = 0.4 [m] h4 = 0.5 [m] Density of water is 1000 [kg/m³]; Density of air is 1.225 [kg/m³]; g = 9.81 [m/s²] S.G. of oil is 0.89 h4 [m] h3 [m] h2 [m] Air B h1 [m] Oilarrow_forwardCheck the following equation for dimensional homogeneity: mu = (Fcos) at where m is mass, v is velocity, F is force, is an angle, and it is time. Check that each term in the equation has the following dimensions: [MOLT] where you are to choose the coefficients a, b, c. Answers: b= C= i iarrow_forward(The complete question is in the picture) A disk rotates with constant angular acceleration about an axis passing through its center of mass. At an instant, its angular speed is measured to be 20.0 [rad/s]. What is the angular speed of the disk after 2.00 [s] if it has revolved by 60.0 [rad] during this timeinterval? A. 10.0 [rad/s]B. 20.0 [rad/s]C. 30.0 [rad/s]D. 40.0 [rad/s]arrow_forward
- Velocity, v [m/s] (0,vo) Number Time, t [s] m (t₁,V₁) Given the above figure, where v0 = 3 m/s, v₁= 5 m/s, and t₁= 5 s, what is the displacement over this time interval? Write your answer in metres to three significant figures. BY SA USask Engineeringarrow_forwardA. The flow of liquid from a tank in a manufacturing system has been modeled using the following equation: q(t)=ke(t)√h(t) where: q(t) is the rate of liquid flow out of the tank [m³/s] (1) is the position of a valve at the outlet of the tank [% open] h(t) is the height of liquid in the tank [m] k is a constant Obtain a linearized equation describing the flow rate q(t) as an approximate function of change in valve position 8(t) away from a nominal valve position 8, and change in liquid height h(t) away from a nominal liquid height ho.arrow_forwardCheck the following equation for dimensional homogeneity: mv = = 1.5² (Fcose) dt where m is mass, v is velocity, F is force, is an angle, and t is time. Check that each term in the equation has the following dimensions: [MªLbTC] where you are to choose the coefficients a, b, c. Answers: a = i b = i C=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
Unit Conversion the Easy Way (Dimensional Analysis); Author: ketzbook;https://www.youtube.com/watch?v=HRe1mire4Gc;License: Standard YouTube License, CC-BY