Concept explainers
(a)
The estimation of the resistivity and
(a)

Answer to Problem 28PQ
The estimation of the resistivity and conductivity of a roll of the pure copper pennies are
Explanation of Solution
The estimated values of pure substances are given in Table 28.2.
For the pure copper, the resistivity
Conclusion:
Therefore, the estimation of the resistivity and conductivity of a roll of the pure copper pennies are
(b)
The estimation of the resistance of the roll of pure copper pennies.
(b)

Answer to Problem 28PQ
The estimation of the resistance of the roll of pure copper pennies is
Explanation of Solution
The radius and the length of a stack of 50 pennies are
Write the relation for the resistance of the role of pure copper pennies.
Here,
Write the relation for the cross-sectional area of the copper penny.
Here,
Use equation (II) in equation (I) to get
Conclusion:
Substitute
Therefore, the estimation of the resistance of the roll of pure copper pennies is
(b)
The estimation of the resistance of the roll of pure aluminum pennies.
(b)

Answer to Problem 28PQ
The estimation of the resistance of the roll of pure aluminum pennies is
Explanation of Solution
Rewrite the equation (III) for the resistance of the aluminum pennies
Conclusion:
Substitute
Therefore, the estimation of the resistance of the roll of pure aluminum pennies is
Want to see more full solutions like this?
Chapter 28 Solutions
EBK PHYSICS FOR SCIENTISTS AND ENGINEER
- Pls help ASAParrow_forward12. A motorboat traveling 6 m/s, West encounters a water current travelling 3.5 m/s, South. a) Draw a vector diagram showing the resultant velocity, then determine the resultant velocity of the motorboat. b) If the width of the river is 112 m wide, then how much time does it take for the boat to travel shore to shore? c) What distance downstream does the boat reach the opposite shore?arrow_forwardLake Erie contains roughly 4.00⋅10114.00⋅1011 m3 of water. Assume the density of this water is 1000. kg/m3 and the specific heat of water is 4186 J/kg˚C. It takes 2.31x10^19 J of energy to raise the temperature of that volume of water from 12.0 °C to 25.8 ˚C. An electric power plant can produce about 1110 MW. How many years would it take to supply this amount of energy by using the 1110 MW from an electric power plant?arrow_forward
- Pls help ASAParrow_forwardPls help ASAParrow_forwardm m $2° 15. A truck is stopped at a red light. Once the light turns green, the truck accelerates forward at 1.75- that same instant, a car moving with a constant speed of 50 — passes the truck. a) How many seconds will it take for the truck to catch up to the car? S b) How many metres will the truck travel before it catches up to the car? Atarrow_forward
- Pls help ASAParrow_forwardI need help adding more information to my study guide. This is subject is physics My topic : Emission Spectrum Target Material I need information on this topic but make it as study guide form and make 5 questions and include the answers.arrow_forwardAn electron and a proton are each moving at 755 km/s in perpendicular paths as shown in (Figure 1). Find the magnitude of the total magnetic force that the electron exerts on the proton. Find the magnitude of the total electrical force that the electron exerts on the proton.arrow_forward
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningCollege PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax CollegePhysics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning





