EP PHYSICS F/SCI.+ENGR.W/MOD..-MOD MAST
4th Edition
ISBN: 9780133899634
Author: GIANCOLI
Publisher: PEARSON CO
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 28, Problem 17Q
A heavy magnet attracts, from rest, a heavy block of iron. Before striking the magnet the block has acquired considerable kinetic energy. (a) What is the source of this kinetic energy? (b) When the block strikes the magnet, some or the latter’s domains may be jarred into randomness; describe the energy transformations.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A family in Charlotte wants to drive to a campsite next to Mt. Mitchell. Their trip will take them 2km up in elevation. They have the choice of taking their Tesla (EV), which when fully charged has 100 kWh of stored energy in the batteries (and for this problem is 100% efficient at converting its stored energy into kinetic energy) and a mass of 2200kg, or their choice of taking their Ford F-150. Gasoline has an energy density of 34.2 Megajoules per liter. The Ford's fuel tank contains 23 gallons. Assume the Ford’s engine is able to convert 30% of the energy stored in its gasoline tank into kinetic energy (typical efficiency for gasoline engines), with the rest of the stored energy in the gasoline lost to heat. The mass of the Ford is about 2000kg. They are going to tow their big pop-up trailer to the campsite. For this question, assume that each vehicle must use a combined 79 kWh of energy to combat the wind resistance of moving at 75 mph with the trailer for the whole drive, and to…
In a hydroelectric dam, water falls 30.0 mm and then spins a turbine to generate electricity.
You may want to review (Pages 234 - 238) .
What is ΔUΔUDeltaU of 1.0 kg of water?
Express your answer with the appropriate units.
Suppose the dam is 80% efficient at converting the water's potential energy to electrical energy. How many kilograms of water must pass through the turbines each second to generate 51.0 MWMW of electricity? This is a typical value for a small hydroelectric dam.
Express your answer using three decimal places.
Fernando is an engineer at an amusement park who is experimenting with changes to the setup for a magnetic roller coaster ride. In one ride, there are two identical roller coaster cars (red and yellow) that start on opposite sides of a large magnet located in the center of a station. He moves both cars, so each car ends up one space farther away from the large magnet.
How did the potential energy of the two cars change? Did the potential energy of one car change more than the other? Why do you think so?
Chapter 28 Solutions
EP PHYSICS F/SCI.+ENGR.W/MOD..-MOD MAST
Ch. 28.1 - In Example 2510 we saw that a typical lightning...Ch. 28.1 - Suppose both I1 and I2 point into the page in Fig....Ch. 28.4 - Prob. 1CECh. 28 - The magnetic field due to current in wires in your...Ch. 28 - Compare and contrast the magnetic field due to a...Ch. 28 - Two insulated long wires carrying equal currents I...Ch. 28 - Prob. 4QCh. 28 - A horizontal current-carrying wire, free to move...Ch. 28 - (a) Write Ampres law for a path that surrounds...Ch. 28 - Suppose the cylindrical conductor of Fig. 2811a...
Ch. 28 - Explain why a field such as that shown in Fig....Ch. 28 - Prob. 9QCh. 28 - Use the Biot-Savart law to show that the field of...Ch. 28 - Prob. 11QCh. 28 - Why does twisting the lead-in wires to electrical...Ch. 28 - Compare the Biot-Savart law with Coulombs law....Ch. 28 - How might you define or determine the magnetic...Ch. 28 - How might you measure the magnetic dipole moment...Ch. 28 - A type of magnetic switch similar to a solenoid is...Ch. 28 - A heavy magnet attracts, from rest, a heavy block...Ch. 28 - Will a magnet attract any metallic object, such as...Ch. 28 - An unmagnetized nail will not attract an...Ch. 28 - Prob. 20QCh. 28 - Prob. 21QCh. 28 - Prob. 22QCh. 28 - Prob. 23QCh. 28 - Two iron bars attract each other no matter which...Ch. 28 - Describe the magnetization curve for (a) a...Ch. 28 - Prob. 26QCh. 28 - (I) Jumper cables used to start a stalled vehicle...Ch. 28 - (I) If an electric wire is allowed to produce a...Ch. 28 - Prob. 3PCh. 28 - Prob. 4PCh. 28 - Prob. 5PCh. 28 - (II) An experiment on the Earths magnetic field is...Ch. 28 - Prob. 7PCh. 28 - At the location of the compass, the magnetic field...Ch. 28 - (II) A long horizontal wire carries 24.0 A of...Ch. 28 - (II) A straight stream of protons passes a given...Ch. 28 - (II) Determine the magnetic field midway between...Ch. 28 - (II) Two straight parallel wires are separated by...Ch. 28 - (II) Two long straight wires each carry a current...Ch. 28 - (II) A long pair of insulated wires serves to...Ch. 28 - (II) A third wire is placed in the plane of the...Ch. 28 - (II) A power line carries a current of 95 A west...Ch. 28 - (II) A compass needle points 28 E of N outdoors....Ch. 28 - Prob. 18PCh. 28 - (II) Let two long parallel wires, a distance d...Ch. 28 - (II) Repeat Problem 19 if the wire at x = 0...Ch. 28 - (II) Two long wires are oriented so that they are...Ch. 28 - (II) Two long parallel wires 8.20 cm apart carry...Ch. 28 - (III) A very long flat conducting strip of width d...Ch. 28 - (III) A triangular loop of side length a carries a...Ch. 28 - Prob. 25PCh. 28 - Prob. 26PCh. 28 - (I) A 2.5-mm-diameter copper wire carries a 33-A...Ch. 28 - (II) A toroid (Fig. 2817) has a 50.0-cm inner...Ch. 28 - Prob. 29PCh. 28 - (II) (a) Use Eq. 281, and the vector nature of B,...Ch. 28 - (II) A coaxial cable consists of a solid inner...Ch. 28 - (III) Suppose the current in the coaxial cable of...Ch. 28 - Prob. 33PCh. 28 - (II) A wire, in a plane, has the shape shown in...Ch. 28 - (II) A circular conducting ring of radius R is...Ch. 28 - (II) A small loop of wire of radius 1.8 cm is...Ch. 28 - Prob. 37PCh. 28 - Prob. 38PCh. 28 - Prob. 39PCh. 28 - Prob. 40PCh. 28 - Prob. 41PCh. 28 - (III) Use the result of Problem 41 to find the...Ch. 28 - (III) A wire is bent into the shape of a regular...Ch. 28 - Prob. 44PCh. 28 - Prob. 45PCh. 28 - (III) A square loop of wire, of side d, carries a...Ch. 28 - (II) An iron atom has a magnetic dipole moment of...Ch. 28 - (I) The following are some values of B and B0 for...Ch. 28 - (I) A large thin toroid has 285 loops of wire per...Ch. 28 - (II) An iron-core solenoid is 38 cm long and 1.8...Ch. 28 - Three long parallel wires are 3.5 cm from one...Ch. 28 - Prob. 52GPCh. 28 - Prob. 53GPCh. 28 - Prob. 54GPCh. 28 - Two long straight parallel wires are 15 cm apart....Ch. 28 - A rectangular loop of wire carries a 2.0-A current...Ch. 28 - Prob. 57GPCh. 28 - A long horizontal wire carries a current of 48 A....Ch. 28 - A square loop of wire, of side d, carries a...Ch. 28 - Prob. 60GPCh. 28 - Prob. 61GPCh. 28 - For two long parallel wires separated by a...Ch. 28 - Near the Earths poles the magnetic field is about...Ch. 28 - A 175-g model airplane charged to 18.0 mC and...Ch. 28 - Suppose that an electromagnet uses a coil 2.0 m in...Ch. 28 - Four hour long straight parallel wires located at...Ch. 28 - Prob. 67GPCh. 28 - A thin 12-cm-long solenoid has a total of 420...Ch. 28 - A 550-turn solenoid is 15 cm long. The current...Ch. 28 - Prob. 70GPCh. 28 - Prob. 71GPCh. 28 - Prob. 72GPCh. 28 - Prob. 73GPCh. 28 - Prob. 74GPCh. 28 - (II) A circular current loop of radius 15 cm...Ch. 28 - (III) A set of Helmholtz coils (see Problem 61,...
Additional Science Textbook Solutions
Find more solutions based on key concepts
If the boy on the bicycle in the preceding problem accelerates from rest to a speed of 10.0 m/s in 10.0 s, what...
University Physics Volume 1
The diagram shows Bob’s view of the passing of two identical spaceships. Anna’s and his own, where v=2 . The le...
Modern Physics
1. When is energy most evident?
Conceptual Physics (12th Edition)
80. When you double the charge on both particles in a pair, what effect does this have on the force between the...
Conceptual Physical Science (6th Edition)
1. A 5.0-m-diameter merry-go-round is turning with a 4.0 s period. What is the speed of a child on the rim?
College Physics: A Strategic Approach (4th Edition)
2.86 DATA A model car starts from rest and travels in a straight line. A smartphone mounted on the car has an ...
University Physics (14th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- A) Explain the Law of Conservation of Energy in the context of this problem.arrow_forwardHow long would it take a 500 W electric motor to do 1.50 x 10^5 J of work?arrow_forwardD A force F = x'y'i+x*y'j acts on a particle moving in the xy plane. Find the work done by the fore F when the part moves along the AC path. 2a6 A-) B-) C-) D-) 2a3 E-)arrow_forward
- 2A Show that in a central force field, the potential energy is function only of the distance r from the center of forces.arrow_forwardCite an example of the Law of Conservation of Energy and explainarrow_forwardA car generating a power of 92041.43watts is traveling on a road with a coefficient of kinetic friction of 0.05 . If the velocity of it upon reaching its destination is 31.96 m/s and has been accelerating at a rate of 4.45 m/s2, what is the mass of the car?arrow_forward
- The change in the total energy of a body moving because of work being done on it is attributed by the change in kinetic energy only when ______ a) It moves extremely slowly b) It moves with a very high velocity c) It moves on an equipotential surface d) It moves with a positive accelerationarrow_forwardWhen a battery provides power to a hand-held fan, what kinds of energy are present and how do they change? Give me a step-by-step explanation in complete sentences with as much detail as you can. Also tell me the type of motion is happening when the fan works, remember it's a hand-held fan.arrow_forwardA person in good physical condition can put out 100 W of useful power for several hours at a stretch, perhaps by pedaling a mechanism that drives an electric generator. Neglecting any problems of generator efficiency and practical considerations such as resting time: (a) How many people would it take to run a 4.00-kW electric clothes dryer? (b) How many people would it take to replace a large electric power plant that generates 800 MW?arrow_forward
- Integrated Concepts The 70.0-kg swimmer in Figure 7.44 starts a race with an initial velocity of 1.25 m/s and exerts an average force of 80.0 N backward with his arms during each 1.80 m long stroke. (a) What is his initial acceleration if water resistance is 45.0 N? (b) What is the subsequent average resistance force from the water during the 5.00 s it takes him to reach his top velocity of 2.50 m/s? (c) Discuss whether water resistance seems to increase linearly with velocity.arrow_forwardA 3.50-kN piano is lilted by three workers at constant speed to an apartment 25.0 m above the street using a pulley system fastened to the roof of the building. Each worker is able to deliver 165 W of power, and the pulley system is 75% efficient (so that 25% of the mechanical energy is lost due to friction in the pulley). Neglecting the mass of the pulley, find the time required to lift the piano from the street to the apartment.arrow_forwardAn elevator consists of an elevator cage and a counterweight attached tothe ends of a cable that runs over a pulley (see the Figure below). The mass of the cage (withits load) is 1000 kg, and the mass of the counterweight is 700 kg. The elevator is driven by anelectric motor attached to the pulley. Suppose that the elevator is initially at rest on the firstfloor of the building and the motor makes the elevator accelerate upward at the rate of 1.5 m/s2 (a) What is the tension in the part of the cable attached to the elevator cage? What is thetension in the part of the cable attached to the counterweight?.(b) The acceleration lasts exactly 1.0 s. How much work has the electric motor done in thisinterval? Ignore friction forces and ignore the mass of the pulley. (c) After the acceleration interval of 1.0 s, the motor pulls the elevator upward at constantspeed until it reaches the third floor, exactly 10.0 m above therest floor. What is the total amount of work that the motor has done up…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- College PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax College
- University Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice UniversityPhysics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College
University Physics Volume 1
Physics
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:OpenStax - Rice University
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
What is Electromagnetic Induction? | Faraday's Laws and Lenz Law | iKen | iKen Edu | iKen App; Author: Iken Edu;https://www.youtube.com/watch?v=3HyORmBip-w;License: Standard YouTube License, CC-BY