How does a scrap heap magnet work? (In detail)

Answers

Answer 1

Answer: is nothing but a heavy electromagnet. On a soft iron core (because, there should not be any retentivity) thick insulated copper wire is wound. As the magnetic power of an electromagnet is depending upon the current, number of turns in the coil, the copper wire should be able to withstand heavy current and more number of turns will create very strong magnetic field. When the current passes it will become a very strong magnet and will attract all the magnetic materials in the scrap. When there is no current the core gets dememagnetised and all the magnetic materials will be falling down from it . This arrangement is fitted at the tip of the cable of a crane and the operating switch will be near the operators cabin. The crane will be brought near the scrap, and the operator switch the magnet on and all the scrap will be attracted by the magnet. Then the crane will be turned to another place the operator switches the magnet off. All the scraps will be falling down.
Instead of a soft iron core ( less retentivity) anyother material with high retentivity is used even after switching it off the scrap will not bec falling down.

Related Questions

HELP!! Worth a lot of points :) (Physics question)
An object in projectile motion will follow wich path
Look at the graph. During what interval is the object decelerating?A) 0-1sB)5-20sC) 20-4D)40-50s
A wave travels down the length of a 25-meter rope in 5.0 seconds. The speed of the wave is _____.5.0 m/s 0.2 m/s 125 m/s 25 m/s
PLEASE HELP. Really important

What factors could slow down a reaction time?

Answers

Answer: To keep it basic start with temprature and inhibitors such as drugs that slow enzymes

surface area, temperature, concentration, and the presence of catalysts and inhibitors

Explanation:To slow down a reaction, you need to do the opposite. Factors that can affect rates of reactions include surface area, temperature, concentration, and the presence of catalysts and inhibitors. Temperature - Changing the temperature of a chemical reaction also affects the reaction rate.

Answer:

In driving, changes by fractions of a second in reaction time may mean the difference between a collision or the avoidance of one. On the road, distractions, speed, driving experience, and physical and cognitive fitness can seriously affect reaction times.

Explanation:

ig this

The "Tragedy of the Commons" describes the conflict between a. Developing and developed nations. b. Individuals and society. c. Farmers and industrialized society. d. Canada and Mexico.

Answers

Final answer:

The 'Tragedy of the Commons' describes the conflict between individual interests and the well-being of the society, resulting in the overuse or depletion of shared resources to everyone's detriment.

Explanation:

The 'Tragedy of the Commons' is a concept that was popularised by ecologist Garrett Hardin to describe a predicament where individual interests and the well-being of society are in conflict. In this scenario, 'common' resources are shared by a group of individuals. Each individual, driven by self-interest, tends to overuse or deplete these resources, leading to overall degradation, despite its disadvantage to the group as a whole. Hence from the options, the correct one would be b. Individuals and society.

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Final answer:

The 'Tragedy of the Commons' illustrates the conflict between individuals and society, where individual self-interests can lead to the depletion of a shared resource, to the detriment of society as a whole.

Explanation:

The 'Tragedy of the Commons' is a concept in social science that describes a dilemma where individuals, acting independently and rationally according to their own self-interest, behave contrary to the best interests of the whole group by depleting some common resource. Essentially, it reflects a conflict between individuals and society.

So the correct answer to your question would be b. individuals and society. This concept is often used in discussions about the environment where individuals deplete or harm the environment (the 'commons') for personal gain, to the detriment of society as a whole.

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Emotional abuse is less harmful than physical abuse.
a. True
b. False

Answers

B) False
There is emerging evidence that emotional abuse is in fact, more harmful, than physical abuse. A study conducted by the Trauma Center at the Justice Resource Institute shows that because of the long-term nature of emotional and psychological abuse, victims score higher on a measure of a variety of negative risk factors and behaviors.

False, just because it's not physical, doesn't mean it's any less harmful than emotional.

A horizontal 20.-newton force is applied to a 5.0-kilogram box to push it across a rough,horizontal floor at a constant velocity of 3.0 meters per second to the right.

Calculate the coefficient of kinetic friction between the box and the floor. [Show all work, including
the equation and substitution with units]

Answers

The formula to work out the coefficient of dynamic (kinetic) friction is F=uR where F is the force applied, u is the coefficient of dynamic friction, and R is the reaction force. This is based on the principle the object is moving at a constant velocity which is the case in this question.

Rearranging this we get u=F/R
Substituting in the values we get u=20/50=2/5=0.4

Therefore the coefficient of kinetic friction between the box and the floor is 0.4

The coefficient of kinetic friction between the box and the floor will be $\boxed{0.4}$ .

Further Explanation:

Given:

The mass of the box is $5\,{\text{kg}}$ .

The force applied on the box is $20\,{\text{N}}$ .

The constant velocity at which the box moves is $3\,{{\text{m}}\mathord{\left/{\vphantom{{\text{m}}{\text{s}}}}\right.\kern-\nulldelimiterspace}{\text{s}}}$ .

Concept:

The box is pushed on the rough floor and due to this; the box will experience a friction force acting in the direction opposite to the motion of the box.

Since the box moves with a constant velocity of $3\,{{\text{m}}\mathord{\left/{\vphantom{{\text{m}}{\text{s}}}}\right.\kern-\nulldelimiterspace}{\text{s}}}$ , the acceleration of the box will be considered as zero.

From Newton’s second law of motion, as the acceleration of the box is zero, the net force acting on the box is zero.

$\boxed{{F_(net)}=m* a}$

The free-body diagram of the box moving on the rough floor is as shown in figure attached below.

From the above explanation, in order to make the net force zero, the friction acting on the box should be equal to the force applied on the box.

${F_(friction)}={F_(applied)}$

The friction force acting on the bxlock is:

$\begin{aligned}{F_(friction)}&=\mu N\n&=\mu mg\n\end{aligned}$

Substitute the value of friction force in the above expression.

$\begin{aligned}\mu mg&={F_(applied)}\n\mu\left({5*10}\right)&=20\n\mu &=\frac{{20}}{{50}}\n&=0.4\n\end{aligned}$

Thus, the coefficient of kinetic friction between the box and the floor will be $\boxed{0.4}$ .

Learn More:

1. A 30.0-kg box is being pulled across a carpeted floor by a horizontal force of 230 N brainly.com/question/7031524

2. Choose the 200 kg refrigerator. Set the applied force to 400 n (to the right). Be sure friction is turned off brainly.com/question/4033012

3. Which of the following is not a component of a lever brainly.com/question/1073452

Answer Details:

Grade: High School

Subject: Physics

Chapter: Friction

Keywords:

Horizontal 20N force, 5 kg box, push, a rough horizontal floor, constant velocity, friction force, coefficient of kinetic friction, box and the floor.

What is the speed of sound, when travelling through steel?

Answers

20000 ft/s or 6100 m/s

Which of the following colors has the highest photon energy?A. Blue
B. Green
C. Yellow
D. Red
Explain your reasoning.

Answers

The energy of a photon is directly proportional to its frequency.
That means it's inversely proportional to its wavelength.

The end of the visible spectrum the highest frequency /shortest
wavelength is the blue end.

Green because in a physical form a photon IS green

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