Example 7.6. The "jumping ring" demonstration. If you wind a solenoidal coil around an iron core (the iron is there to beef up the magnetic field), place a metal ring on top, and plug it in, the ring will jump several feet in the air (Fig. 7.24). Why? ring solenoid FIGURE 7.24

Example 7.6. The "jumping ring" demonstration. If you wind a solenoidal coil around an iron core (the iron is there to beef up the magnetic field), place a metal ring on top, and plug it in, the ring will jump several feet in the air (Fig. 7.24). Why? ring solenoid FIGURE 7.24

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter11: Magnetic Forces And Fields

Section: Chapter Questions

Problem 108CP: A wire ismade into a circular shape of radius R and pivoted along a central support.The two ends of...

See similar textbooks

Related questions

Q: If a bus travelling at 34 m/s is subjected to a steady deceleration of 8 m/s², how long will it take…

A: Given data : Final velocity = V Initial velocity…

Q: equal to 4 units that form an Two vectors on the cartesian plane (y, z), have the same modulus angle…

Q: Eg In a boat race, boat A is leading boat B by 50 m and both boats are traveling at a constant speed…

Q: When waves add up to a bigger wave it is called _________________.

Q: Mass of a car is 124 kg, What is it's weight?

A: Given data : Acceleration due to gravity = g Mass of…

Q: An has a multistrand Car is is out, and at Just lifting the first floor electric elavator a motor at…

Q: rvation is always valid , is it also true for mass

A: Given:- Charge conservation is always valid, is it also true for mass? Find:- Explan?

Q: When a body of unknown mass is attached to an ideal spring with force constant 120 N/m, it is found…

Q: So which one is the correct one.

Q: A vulture when flying with a velocity 'v' attains a momentum of 20 kg m/s. If the mass of the…

A: Given data : Momentum = p Mass = m To find :…

Q: A piece of wire of length 1.00 m is cut into two parts, one of which is bent into a shape of a…

A: GivenA piece of wire of length 1.00 m is cut into two parts

Q: A block is pushed against a horizontal spring, compressing it to 22 cm. After being released, the…

Q: 6. A proton moves through a uniform magnetic field, B = 5μT at a velocity, v= 8 x 10-6m/s. Calculate…

Q: 1. (a) Determine the relative probability that fission reaction will occur in absorptionby 20%…

A: Given in the following question fission reaction probability 20% enriched uranium fuel of fast 10…

Q: A traffic light is suspended from a cable. Earth pulls downward on the traffic light with a force of…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: A rock is attached to an end of a 0.80 m rope. You whirl the 2.0 kg rock in a circle while holding m…

A: we know work done is W=F·S where F is force and S is displacement

Q: please answer part D only 4. The heat capacity of liquid water is 4190 J/(kg K). One mole of water…

A: When the two substance of different temperatures are in contact then heat flow is given as Q =ms∆T

Q: A 100g bird is flying with velocity of +3m/s when suddenly it crashes into a giant billboard,…

A: Impulse : Change is momentum is impulse and product of mass into Velocity is momentum. Impulse =…

Q: capacitive circuit a. What will happen to the capacitive reactance if the frequency increases?…

Q: An electron strikes the screen of the cathode ray tube with a velocity of 10 to the 9th power cm/s.…

A: Please note : As per answering guidelines I can answer the first question only. Since, this is not a…

Q: Using KCL and KVL, solve for Vo (*hint: redraw the circuit) 10 V 5Ω Μ Μ Μ 2Ω ww 5 Ω 1Ω 3Ω

Q: 4 3 2 10 cm 1 3 4 boos 6

A: Draw the schematic diagram of the wave. The distance between crest to crest or trough to trough…

Q: How many coils must a loop have with a cross-sectional area of 0.50m? that is pulled through a…

A: E =4V, A = 0.5m2 B = 0.25T, ∆t = 1sec The induced emf in the coil is E = N.BA/∆t N = ∆t.E /BA N =…

Q: Calculate the value of force Pressure=10 N/m2 Area=2 m2

A: Given : Pressure (P) = 10 N/m2 Area (A) = 2 m2

Q: A heart defibrillator is used to enable the heart to start beating if it has stopped. This is done…

A: Electrical energy transferred to the body is equal to, E = IVt Where, E = energy I = current V =…

Q: An iron ball with mass 180g is attached to a chain that is 1.2m long, suspended at an angle of 55…

A: Draw the schematic diagram of the system.

Q: What is the magnetic force that 0.50 m of a current-carrying wire experiences as 3.0 A of current…

Q: A model for 2. Consider the circuit shown at right, which is a variant of circuit IX from the…

Q: Find the displacement Work done=250 J Force=26 N

A: Given data : Work done=W Force=F To find : Displacement

Q: pendulum consists of a 2.0 m long steel wire supporting a lentil of mass 20 kg. If the pendulum is…

Q: device? Why? 2. Does AC power source can use directly to our home appliances at home? Why or why…

A: Answer:- (2)AC power source can use directly to our home appliances at home. Because The main…

Q: A type of energy storage relative to a particles speed O Work O Potential Energy O Kinetic Energy O…

A: Introduction: The kinetic energy of an object is the energy that it possesses due to its motion. It…

Q: Would you mind solving this on paper, for it too is hard to understand in this format?

Q: 600g of ice at -8℃ is put inside a calorimeter filled with 4000g water initially at 20 ℃. What is…

Q: Find density

A: Given data : Mass=m Volume=V Required: Density

Q: Osmium (the densest metal found on the periodic table) has a mass density, ρo = 22,500 kg/m3 when…

Q: If you placed an AC voltmeter across the outlets of a wall socket in Europe, you would measure…

Q: Calculate the value of force Pressure=10 N/m2 Area=2 m2

A: Given data : Pressure=p Area=A To find : Force

Q: A straight wire with length of 28 cm sweeps across a 0.87 T magnetic field with a speed of 1.3 m/s.…

A: Given Information: The length of the wire is L=28 cm The magnetic field in the wire is B=0.87 T The…

Q: Fluids: A stone has an apparent weight of 803 N when submerged in fresh water (with a density of 998…

Q: A person is falling from a certain height. Which of the following is likely to happen? if he…

A: If he falls on concrete floor then there's sudden change in his momentum resulting in higher…

Q: Faraday's law of magnetic induction states that the voltage induced by a current running through a…

Q: A concave mirror with focal length 16.0 cm is placed 45.0 cm to the left of the object. A convex…

Q: Consider a blue ring centered around the m. The ring has 250 nC of charge, a radius of 0.8 m and…

Q: (4) What the surfac In the inc 30° and us A force F direction ( (a) What s block beg friction and…

A: Friction is the force that resists the sliding and rolling motion of one object over the other. In…

Q: A man weighs 128 lb on the surface of the earth (radius = 3960 miles). At what distance above the…

A: The gravitational acceleration changes with the change in height. Therefore, the weight of an object…

Q: How to determine the vertex angle of a prism!(accompanied by a picture) b. How to determine the…

A: At the minimum deviation Dm, the refracted ray inside the prism becomes parallel to its base.…

Q: Calculate the equivalent resistance between A and B. A -ww 20 2 ww 20 $2 www 20 2 www 20 $2 B www 20…

Q: 1. How does magnetic interaction differ from electric interaction? 2. Sketch the magnetic field…

Q: Discussion DEMETOR 1. Explain briefly the Wheatstone bridge principle of operation. 2. List some…

A: 1. Wheatstone bridge is an electrical circuit which is used for calculation of unknown resistance.…

Concept explainers

Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.

Question

Example 7.6. The "jumping ring" demonstration. If you wind a solenoidal
coil around an iron core (the iron is there to beef up the magnetic field), place
a metal ring on top, and plug it in, the ring will jump several feet in the air
(Fig. 7.24). Why?
ring
solenoid
FIGURE 7.24

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

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

Consider an electron rotating in a circular orbit of radius r. Show that the magnitudes of the magnetic dipole moment and the angular momentum L of the electron are related by: = L=e2m
A current loop with magnetic dipole moment is placed in a uniform magnetic field , with its moment making angle θ with the field. With the arbitrary choice of U = 0 for θ = 90°, prove that the potential energy of the dipole-field system is .
A wire element has dI,IdI=JAdl=Jdv , where A and dv are the cross-sectional area and volume of the element, respectively. Use this, the Biot-Savart law, and J=nev to show that the magnetic field of a moving point charge q is given by: B=04qvrr2
A wire ismade into a circular shape of radius R and pivoted along a central support.The two ends of the sire are touching a banish that is connected to a &power source. The stricture is between the poles of a magnet such that we can assume there is a uniform magnetic field on the wire. In terms of a coordinate system with origin at the center ofthe ring, magneticfieldisBx=B0,By=Bz= 0. and the ring rotates about the z-axis. Find the torque on the ring siren it is not in the xz-plane.
Check Your Understanding In what orientation would a magnetic dipole have to be to produce (a) a maximum torque in a magnetic field? (b) A maximum energy of the dipole?
Is the magnetic field inside a toroid completely uniform? Almost uniform?
The current loop shown in the accompanying figure lies in the plane of the page, as does the magnetic field. Determine the net force and the net torque on the loop if I=10and B=1.5T .
Can a constant magnetic field set into motion an electron initially at rest? Explain your answer.
Check Your Understanding A uniform magnetic field of magnitude 1.5 T is directed horizontally from west to east, (a) What is the magnetic force on a proton at the instant when it is moving vertically downward in the field with a speed of 4 x 107 m/s? (b) Compare this force with the weight w of a proton.
A 0.50-kg copper sheet drops through a uniform horizontal magnetic field of 1.5 T, and it reaches a terminal velocity of 2.0 m's. (a) What is the net map,-, eh: force on the sheet after it reaches terminal velocity? (b) Describe the mechanism responsible for this force, (c) How much power is dissipated as Joule heating while the sheet moves at terminal velocity?
Two long wires, one of which has a semicircular tend of radius R, are positioned as shown in the accompanying figure. If both wires carry a current I, how far apart must then parallel sections be so that the net magnetic field at P is zero? Does the current in the straight wire flow up or down?
Find the magnetic field at the center C of the rectangular loop of wire shown in the accompanying figure.