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 11.4CYU: Check Your Understanding In what orientation would a magnetic dipole have to be to produce (a) a...

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

An electron in a TV CRT moves with a speed of 6.0107 m/s, in a direction perpendicular to Earth's field, which has a strength of 5.0105 T. (a) What strength electric field must be applied perpendicular to the Earth’s field to make the election moves in a straight line? (b) If this is done between plates separated by 1.00 cm, what is the voltage applied? (Note that TVs are usually surrounded by a ferromagnetic material to shield against external magnetic fields and avoid the need for such a collection,)
A circular loop of wire of area 10 cm2 carries a current of 25 A. At a particular instant, the loop lies in the xy-plane and is subjected to a magnetic field B=(2.0i+6.0j+8.0k)103T . As viewed from above the xy-plane, the current is circulating clockwise. (a) What is the magnetic dipole moment of the current loop? (b) At this instant, what is the magnetic torque on the loop?
A proton precesses with a frequency p in the presence of a magnetic field. If the intensity of the magnetic field is doubled, what happens to the precessional frequency?
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?
(a) An oxygen16 ion with a mass at 2.661026kg travels at 5.00106m/s perpendicular to a 1.20T magnetic field, which makes it move in a circular arc with a 0.231-m radius. What positive charge is on the ion? (b) What is the radio of this charge to the charge of an electron? (c) Discuss why the radio found in (b) should be an integer.
a. A copper wire carries a current of 135 A to an electroplating tank. Find the magnetic field caused by a 1.3-cm segment of this wire at a point 1.5 m away from it, if a point is on a line at 40 deg to the segment. b. Two straight , parallel , superconducting wires 6.5 mm apart carry equal currents of 17,000 A in opposite direction. Calculate the force per length.
Magnetic Flux Density. A current Io flows in the closed contour circuit in the z = 0 plane shown in the figure below. Use the Biot-Savart Law to determine the magnetic flux density at the point (0,0,zo) on the z-axis.
Imagine that there is 0.8 A running through a metal (7.6 x1028 electrons/m3) wire with a square cross-sectional area of width 0.6 cm. We also place this wire into a uniform magnetic field, such that a potential difference of 6.5 x 10-8 V is across the wire (from one edge to the other, as we discussed in class on the Hall Effect). What is the magntiude of this magnetic field?
Q5: Two homogeneous dielectric materials meat at (y=0) plane. For (y>0), (H=3),and the magnetic field is( H1=3 äx+5 ăy – 4 ăz) A/m. For (y<0), (H2 =5). Find H2, 01, O2. Bin sBn
An iron (density ρ) rod with length L, cross sectional area A, spans across two parallel, metal train tracks. The tracks are connected to a power supply and have a potential ∆V across them. Between the tracks are placed magnets such that the B-field points directly upwards with strength B. What is the acceleration of the iron rod be the moment it starts from rest? What will acceleration be as a function of speed as it continues? Assume the contact is frictionless between the tracks and the rod so that no force of friction needs to be overcome. What will the top speed of the rod be under these conditions?
A hypothetical charge 41pC with mass 67fg has a speed of 58km/s and is ejected southward entering a uniform magnetic field of unknown magnitude and direction. If the path traced is clockwise, (see image) A. Find the magnitude and direction of the magnetic field that will cause the charge to follow a semicircular path (given the diameter 28m). B. Find the time required for the charge to complete a semi-circular path from point K to point L. C.Find the magnitude and the direction of the magnetic force at point L. What are the given in the problem? What are the unknown variables? What are the equations that you are going to use? Solution and answer for Part A. Solution and answer for Part B. Solution and answer for Part C.
1. Fig 1, shows a hollow cylindrical conductor of radii a and b which carries a current i uniformly spread over its cores section. a) show the the magnetic field B from points inside the body of the conductor is given by B={uoi/27(b²-a)} {(r2-a)/r}. And check the case when a=0. b) Make a rough plot at the general behavior of B(r) from r=0 to infinite. [r-current Fig. 1