A long, horizontal wire Ab rests on the surface of a table and carries a current I. A horizontal wire CD is vertically above wire AB , and is free to slide up and down on the two vertical metal guides C and D ( as shown in Fig) .Wire CD is connected through the sliding contacts to another wire that also carries a current I , opposite in direction to the current in wire AB . The mass per unit length of the wire CD is λ. To what equilibrium height h will the wire CD rise. assuming that magnetic force on it is wholly due to current in wire AB ?

Answers

Answer 1

The equilibrium height to which the wire CD will rise is given by the expression h = μ₀I² / 2π λg

What is magnetic field ?

A region in which the force of magnetism acts is known as the magnetic field, and it surrounds magnetic materials or a moving electric charge. Moving magnetic dipoles and electric charges produce a magnetic field, which acts as a force field on other nearby magnetic dipoles and moving charges.

Magnetic field at a distance h produced by a current carrying wire

B = μ₀I/ 2πh

Magnetic force due to the present current carrying wire can be calculated by the formula

F = B I  L

And we also know that F = mg

On equating these mg = B I L

( μ₀I/ 2πh ) I = ( m/ I ) g = λg

thus we get the value of h as

h = μ₀I² / 2π λg

Thus, the equilibrium height to which the wire CD will rise is given by the expression h = μ₀I² / 2π λg .

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Related Questions

Label the spinal cord meninges and spaces. 02:00:12 Skipped Reset Zoom Subarachnoid Arachnoid mater Dura mater Subdural Pia mater space space 7

Answers

The label from superficial to deep, of meninges and their related spaces in the correct order are:

1. Dura mater

2. Subdural space

3. Arachnoid mater

4. Subarachnoid space

5. Pia mater

What is the proper sequence of the meninges, from the superficial to the deep?

The brain and spinal cord are shielded by three layers of membranes called meninges. Pia mater is the thin inner layer. The arachnoid, a structure resembling a web and filled with fluid, is the middle layer and protects the brain. The durable outer layer is known as the dura mater.

The subdural space is the area that could be found between the arachnoid mater and the meningeal layer of the dura. The subdural space typically only exists in pathological conditions, similar to the epidural space.

Therefore, Between the dura mater of your spinal cord, the bones of your vertebral column, and the dura mater of your skull is a space called the epidural space.

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When galaxies collide, what happens in general to the stars contained within them?.

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They typically avoid collision as they pass by the stars in the opposite galaxy.

What happens to stars when galaxies collide?

Star formation can potentially be sparked by merging galaxies. Galaxies are made of gas and dust as well. This material may be affected by the gravitational pull of both colliding stars, resulting in friction and shock waves that could spark the fusion of new stars.In the galaxies, gas clouds DO clash. In addition to creating neutron stars and black holes, the collisions may also result in bursts of star formation, excess supernovae, and other high-energy events.As the supermassive black holes merge, some stars will be flung out of the galaxy and others will be obliterated. Additionally, both galaxies' fragile spiral structures will be obliterated when they merge to form a single, massive elliptical galaxy.

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Problem 12.41 9 of 9 Review A 50 g mass rotates in a vertical plane--call it the xy-plane with the y-axis pointing up--at the end of a 75-cm-long, massless, rigid rod. The other end of the rod is attached to a frictionless pivot at the origin. Part A What is the gravitational torque about the pivot when the mass is 60° above the +x-axis? Give your answer using unit vectors. Express your answer in newton-meters. Enter components of torque, separated by comma. IVO AE ? Tx, Ty,Tz = N·m Submit Request Answer

Answers

The value of gravitational torque after solving the expression will be equal to -0.18375 N.mz.

What is Torque?

The rotating equivalent of a force in physics or mechanics is called torque. Depending on the topic matter, it may also be referred to as the moment, point in time of force, rotating force, or turning effect. It symbolizes a force's capacity to cause a change inside the bodies natural rotational motion.

As per the given information in the question,

Mass, m = 50 g

Length, l = 75 cm

Gravitational force, [tex]\vec F[/tex] = -mgy

Then, the position vector of the particle will be,

[tex]\vec \tau[/tex] = l(cos 60° x + sin 60° y) × (-mgz)

= -0.18375 N.mz

Therefore,

[tex]\tau_x, \tau_y,\tau_z=0, 0, -0.18375[/tex]

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a. What are the defects of simple cell?​

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Defects of simple voltaic cell:
Polarization: When a simple cell is in use it is found that the current quickly falls to a very small value.
Local action: If the zinc used in the simple cell is of the impure commercial variety bubbles of hydrogen will be seen coming off the zinc

an ice hockey puck is tied by a string to a stake on rough ice and slides around in a circle until it comes to a stop. what is the sign of the work done by the tension in the rope as it slides to a stop?

Answers

The rope slides to a stop with no work being done by the tension in the rope.

Which of Newton's equations of motion best describes how a hockey puck would move if there was no external force acting on it as it slid around the ice?

first rule of Newton If not affected by a net external force, an item at rest or in motion maintains its state of motion at a constant speed.

A hockey puck striking is governed by what rule of motion?

The First Law of Motion by Newton Ice hockey is a sport that can help us understand Newton's laws of motion. Until pushed to change its condition by a net force, an object stays at rest or moves at a constant speed (speed in a constant direction).

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a block is pulled along a surface of negligible friction by a spring scale that exerts a force f on the block. the mass of the block is 4kg, and the spring scale reads 10n. which of the following free-body diagrams can be used to show the magnitude and direction of all the forces exerted on the block as it is pulled along the surface?

Answers

The correct free-body diagram is the one shown in option C

What is the correct free-body diagram?

We know that the free-body diagram could be used to identify the forces that are acting on an object. We know that the normal force that acts on an object must be equal to the weight of the object and this is represented as lines of equal length on the free-body diagram.

We can now see that the correct free-body diagram is one in which the magnitude of the force weight and the normal force is the same. Now the force on the spring would be shown as the forward force.

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6. suppose you apply a force of 1 n to block a and a force of 2 n to block b. does it follow that block b must have twice the acceleration of block a? justify your answer using newton's second law.

Answers

Yes, block b must have twice the acceleration of block a but Only if B has the same mass as A.

Acceleration is the rate of change of the velocity of an item with appreciation to time. Accelerations are vector portions. The orientation of an item's acceleration is given by the orientation of the net pressure appearing on that object.

Acceleration is the charge at which velocity modifications with time, in terms of each speed and route. A factor or an object moving in a straight line is accelerated if it quickens or slows down. movement on a circle is extended despite the fact that the rate is consistent because the course is continually changing.

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a stone is thrown horizontally from the top of a cliff 30m high with an itinal sped of 20, find the vertical speed of the stone as it hits the groudn

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The molar mass of sulfur hexafluoride is 146 g/mol.

13. g  of sulfur hexafluoride = 13 g / 146g/mol = 0.089 mol

The pressure of sulfur hexafluoride

P = nRT / V

P = 0.089 mol x 0.08206 Latm/mol/k x (10.0 + 273.15)K / 5.0 L

P = 0.41 atm.

The rate of change in position of an object in any course. Speed is measured because the ratio of distance to the time wherein the distance became included. Speed is a scalar amount because it has handiest route and no significance.

Velocity can be notion of as the rate at which an object covers distance. A quick-moving object has a high speed and covers a notably big distance in a given amount of time, whilst a sluggish-shifting item covers a relatively small amount of distance in the same amount of time.

The primary unit or the S.I. unit of velocity is m/s or ms¹.

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TRUE/FALSE. initial discovery of radioactivity and how it was thought to be the same as another type of light energy emission

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Initial discovery of radioactivity and how it was thought to be the same as another type of light energy emission is true statement.

Henri Becquerel made the initial discovery of radioactivity. She investigated the characteristics of x-rays, which Wilhelm Roentgen had discovered in 1895, using naturally fluorescent minerals. In the belief that the uranium would absorb the sun's energy and then release it as x-rays, he placed potassium uranyl sulphate on photographic plates covered in black paper and exposed them to the sun.

A study released earlier this month by the Global Carbon Project (GCP), a team of scientists who monitor emissions, predicts that CO2 emissions will increase by 4 point 9 percent in 2021 compared to the previous year.

Due to the COVID-19 pandemic and related lockdowns, emissions decreased by 5 point 4 percent in 2020.

With a 40% share and increasing, the energy sector remains the main source of greenhouse gas emissions.

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Crane with 5 kW motor lifts the load evenly at a speed of 0.1 m/s. What is the weight of the cargo?​

Answers

Answer: 0.5

Explanation:

Are these statements about the Fluid mechanics true?
Statement 1: Fluid mechanics is a branch in chemistry that involves study of fluids.
Statement 2: Fluid mechanics can be divided into 2 major categories.
a) True, False
b) True, True
c) False, True
d) False, False

Answers

Announcement 1: Fluid mechanics is a branch of chemistry that involves having a look at fluids:  c) False, True

Fluid mechanics is the branch of physics concerned with the mechanics of fluids and the forces on them. It has programs in an extensive variety of disciplines, such as mechanical, aerospace, civil, chemical, and biomedical engineering, geophysics, oceanography, meteorology, astrophysics, and biology. Fluid mechanics is the look at of the forces of the fluid and the way fluids flow. Fluid mechanics may be divided into parts: fluid statics and fluid dynamics. Fluid statics is the observation of fluids at rest, and fluid dynamics is the study of fluids in motion.

Fluid mechanics is the look at fluid behavior (beverages, gases, blood, and plasmas) at relaxation and in movement. Fluid mechanics has a huge variety of packages in mechanical and chemical engineering, organic structures, and in astrophysics.

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For the purposes of seeking a theory to explain the formation of the solar system, we identify four major features of our solar system. Which of the following represent these four major features?
- Large bodies in the solar system have orderly motions.
- Planets fall into two major categories (terrestrial and jovian).
- Several exceptions to the general trends stand out.
- Swarms of asteroids and comets populate the solar system.

Answers

Planets fall into two major categories (terrestrial and jovian).

a. Planets can be divided into two main groups.

b. The fusing of hydrogen into helium is how the Sun produces energy.

c. Gravity brought about the solar nebula's collapse.

d. There are a tons of comets and asteroids.

The four main characteristics of the solar system are listed above in the order in which they contributed to its origin.

The majority of planets can be divided into two groups: gaseous giants and other terrestrial planets. As a result of the solar chromosphere's solar winds.

This energy powers the fusion of hydrogen and helium in the sun's core, which powers the sun itself. The solar nebula was a cloud of gases and dust that started to spin on its own, drawing the microscopic particles closer due to gravity. In the solar system, there are around 100 billion comets and asteroids.

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what is mesothermal climates

Answers

Answer:

Mesothermal regions have moderate climates. They are not cold enough to sustain a layer of winter snow but are also not remain warm enough to support flowering plants (and, thus, evapotranspiration) all year.

Explanation:

Please give the brainliest.

What can I do to make this less expensive, with less cargo damage, and with a sturdy shell condition? Anything less than the amount shown in the image.

Answers

The external part of the shell is made of fiberglass. This is probably very expensive. The production team of the above product should experiment with Graphene.

Why should Graphene be considered for the above project?

It should be highlighted that graphene is already being utilized in transportation, medical, electronics, energy, defense, and desalination; graphene research is having a significant influence across a wide variety of sectors.

To put things in perspective, one square meter of normal paper is 1000 times heavier than graphene, while a single sheet of graphene large enough to cover a football field weighs less than a gram. Strongest. With a tensile strength of 150,000,000 psi, graphene outperforms steel and Kevlar.

Graphene, a single sheet of carbon atoms, has been hailed as the strongest substance known to man, 200 times stronger than steel, lighter than paper, and with amazing mechanical and electrical capabilities.

Given that graphene is formed of carbon, and carbon is in plentiful supply, it will very certainly be less expensive than fiberglass.

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the wall separating henri from his manager made it hard to hear what his manager was saying. the wall is an example of a(n) barrier.

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The wall separating Henri from his manager made it hard to hear what his manager was saying, the wall is an example of a physical barrier.

Physical barrier is the environmental and natural condition that act as a barrier in communication in sending message from sender to receiver.

Organizational environment or interior workspace design problems, technological problems and noise are the parts of physical barriers.Surroundings, distance between people, time differences and faulty communication methods are factors that can create a physical barrier. Managers must quickly identify these factors to address their negative effects on productivity.

Therefore the wall between Henri and his manager acts as a physics barrier which made it hard to hear what his manager is saying.

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you have three light bulbs; bulb a has a resistance of 240 q, bulb b has a resistance of 192 q, and bulb c has a resistance of 144 q. each of these bulbs is used for the same amount of time in a setup like that in the drawing. in each case the speed of the rod and the magnetic field strength are the same. rank the setups in descending order, according to how much work the hand in the drawing must do (largest amount of work first).

Answers

The correct sequence will be: A, B, C

Given,

Resistance A = 240 Ω

Resistance B = 192 Ω

Resistance C = 144 Ω

We know that the resistance has relations with Current (I) and Voltage (v)

But to find the work done by the hand,

We will apply the formula of the work,

W = VIt

Replacing V with R/I

Work = (R/I)*I*t

Work= R*t

The time given is same.

So here,

Work = Resistance,

By this derivation, the highest resistance will do the highest amount of work.

Therefore, the work done by Resistance A will be the most and then the work by resistance B and then the work by resistance C.

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