Foundations of Materials Science and Engineering
6th Edition
ISBN: 9781259696558
Author: SMITH
Publisher: MCG
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Chapter 1.9, Problem 6KCP
Define smart materials. Give an example of such material and an application for it.
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MMB241 - Tutorial L9.pd X PDF MMB241 - Tutorial L10.pX DE MMB241 - Tutorial L11.p x PDF Lecture W12 - Work and X
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6. If the 50-kg load A is hoisted by motor M so that the load has a constant velocity of 1.5
m/s, determine the power input to the motor, which operates at an efficiency € = 0.8.
1.5 m/s
2
7. The sports car has a mass of 2.3 Mg, and while it is traveling at 28 m/s the driver causes
it to accelerate at 5m/s². If the drag resistance on the car due to the wind is FD= 0.3v²N,
where v is the velocity in m/s, determine the power supplied to the engine at this instant.
The engine has a running efficiency of P = 0.68.
8. If the jet on the dragster supplies a constant thrust of T-20 kN, determine the power
generated by the jet as a function of time. Neglect drag and rolling resistance, and the loss
of fuel. The dragster has a mass of 1…
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Question 1
The engine of a 3500-N car is generating a constant power of 50 hp (horsepower)
while the car is traveling up the slope with a constant speed. If the engine is
operating with an efficiency of € 0.8, determine the speed of the car. Neglect
drag and rolling resistance. Use g 9.81 m/s² and 1 hp = 745.7 W.
10
го
Question 2
A man pushes on a 60-N crate with a force F. The force is always directed downward at an angle of 30°
from the horizontal, as shown in the figure. The magnitude of the force is gradually increased until the crate
begins to slide. Determine the crate's initial acceleration once it starts to move. Assume the coefficient of
static friction is μ = 0.6, the coefficient of kinetic…
state is
Derive an expression for the volume expansivity of a substance whose equation of
RT
P
=
v-b
a
v(v + b)TZ
where a and b are empirical constants.
Chapter 1 Solutions
Foundations of Materials Science and Engineering
Ch. 1.9 - What are materials? List eight commonly...Ch. 1.9 - What are the main classes of engineering...Ch. 1.9 - What are some of the important properties of each...Ch. 1.9 - Define a composite material. Give an example of a...Ch. 1.9 - Provide a list of characteristics for structural...Ch. 1.9 - Define smart materials. Give an example of such...Ch. 1.9 - Prob. 7KCPCh. 1.9 - Prob. 8KCPCh. 1.9 - Nickel-base superalloys are used in the structure...Ch. 1.9 - Make a list of items that you find in your kitchen...
Ch. 1.9 - Make a list of all the major components of your...Ch. 1.9 - Make a list of major components in your automobile...Ch. 1.9 - Make a list of major components in your computer...Ch. 1.9 - Make a list of major components in your classroom...Ch. 1.9 - Perform a search on the history of automobiles and...Ch. 1.9 - Perform a search on the history of wheels and...Ch. 1.9 - Perform a search on the history of recording media...Ch. 1.9 - Perform a search on the history of sport track...Ch. 1.9 - List some materials usage changes that you have...Ch. 1.9 - (a) What kind of material is OFHC copper? (b) What...Ch. 1.9 - (a) To which class of materials does PTFE belong?...Ch. 1.9 - Why should civil engineers be knowledgeable about...Ch. 1.9 - Why should mechanical engineers be knowledgeable...Ch. 1.9 - Why should chemical engineers be knowledgeable...Ch. 1.9 - Why should ocean engineers be knowledgeable about...Ch. 1.9 - Why should petroleum engineers be knowledgeable...Ch. 1.9 - Why should electrical engineers be knowledgeable...Ch. 1.9 - Why should biomedical engineers be knowledgeable...Ch. 1.9 - (a) To which class of materials does kevlar...Ch. 1.9 - Prob. 30AAPCh. 1.9 - Prob. 31AAPCh. 1.9 - What factors might cause materials usage...Ch. 1.9 - Consider the common household component in a...Ch. 1.9 - (a) Name the important factors in selecting...Ch. 1.9 - (a) Name the important criteria for selecting...Ch. 1.9 - Why is it important or helpful to classify...Ch. 1.9 - A certain application requires a material that...Ch. 1.9 - Give as many examples as you can on how materials...Ch. 1.9 - When selecting materials to be used inside the...Ch. 1.9 - In the sport of tennis, for optimal performance,...
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- For a gas whose equation of state is P(v-b)=RT, the specified heat difference Cp-Cv is equal to which of the following (show all work): (a) R (b) R-b (c) R+b (d) 0 (e) R(1+v/b)arrow_forwardof state is Derive an expression for the specific heat difference of a substance whose equation RT P = v-b a v(v + b)TZ where a and b are empirical constants.arrow_forwardTemperature may alternatively be defined as T = ди v Prove that this definition reduces the net entropy change of two constant-volume systems filled with simple compressible substances to zero as the two systems approach thermal equilibrium.arrow_forward
- Using the Maxwell relations, determine a relation for equation of state is (P-a/v²) (v−b) = RT. Os for a gas whose av Tarrow_forward(◉ Homework#8arrow_forwardHomework#8arrow_forwardBox A has a mass of 15 kilograms and is attached to the 20 kilogram Box B using the cord and pulley system shown. The coefficient of kinetic friction between the boxes and surface is 0.2 and the moment of inertia of the pulley is 0.5 kg * m^ 2. After 2 seconds, how far do the boxes move? A бро Barrow_forwardBox A has a mass of 15 kilograms and is attached to the 20 kilogram Box B using the cord and pulley system shown. The coefficient of kinetic friction between the boxes and surface is 0.2 and the moment of inertia of the pulley is 0.5 kg * m^2. Both boxes are 0.25 m long and 0.25 m high. The cord is attached to the bottom of Box A and the middle of box B. After 2 seconds, how far do the boxes move? A From бро Barrow_forwardHomework#8arrow_forwardSign in PDF Lecture W09.pdf PDF MMB241 - Tutorial L9.pdf File C:/Users/KHULEKANI/Desktop/mmb241/MMB241%20-%20Tutorial%20L9.pdf II! Draw | I│Alla | Ask Copilot + of 4 D Topic: Kinetics of Particles: - Forces in dynamic system, Free body diagram, newton's laws of motion, and equations of motion. TQ1. The 10-kg block is subjected to the forces shown. In each case, determine its velocity when t=2s if v 0 when t=0 500 N F = (201) N 300 N (b) TQ2. The 10-kg block is subjected to the forces shown. In each case, determine its velocity at s-8 m if v = 3 m/s at s=0. Motion occurs to the right. 40 N F = (2.5 s) N 200 N 30 N (b) TQ3. Determine the initial acceleration of the 10-kg smooth collar. The spring has an unstretched length of 1 m. 1 σ Q ☆ Q 6 ا الى ☑arrow_forwardSign in PDF Lecture W09.pdf PDF MMB241 - Tutorial L9.pdf File C:/Users/KHULEKANI/Desktop/mmb241/MMB241%20-%20Tutorial%20L9.pdf II! Draw | I│Alla | Ask Copilot + 4 of 4 | D TQ9. If motor M exerts a force of F (10t 2 + 100) N determine the velocity of the 25-kg crate when t kinetic friction between the crate and the plane are μs The crate is initially at rest. on the cable, where t is in seconds, 4s. The coefficients of static and 0.3 and μk = 0.25, respectively. M 3 TQ10. The spring has a stiffness k = 200 N/m and is unstretched when the 25-kg block is at A. Determine the acceleration of the block when s = 0.4 m. The contact surface between the block and the plane is smooth. 0.3 m F= 100 N F= 100 N k = 200 N/m σ Q Q ☆ ا الى 6 ☑arrow_forwardmy ID# is 016948724 please solve this problem step by steparrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_iosRecommended textbooks for you
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