how are the magnetic domains of a magnet different from the domains of an ordinary piece of metal?

Answers

Answer 1
Answer:

In a magnet, the domains all point in the same direction; in an ordinary piece of metal, they're all jumbled up.

Explanation:

In a magnet, the domains all point toward the north pole; in an ordinary piece of metal, they all point to the south pole.



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Related Questions

Select the correct answer. kristina works out seven days a week. lately, she has been tired, and her body aches. if she is overtraining, which training principle should kristina consider before continuing her program? a. overload b. recovery c. transfer d. variation

Answers

Answer:

Select the correct answer. kristina works out seven days a week. lately, she has been tired, and her body aches. if she is overtraining, which training principle should kristina consider before continuing her program? a. overload b. recovery c. transfer d. variation

b recovery

If temperature is constant, the volume of a gas varies inversely as its pressure. A gas with a pressure of 150 pounds per square inch occupies a volume of 25 cubic feet. What is the constant of proportionality for this variation?.

Answers

If temperature is constant, the volume of a gas varies inversely as its pressure. The constant of proportionality for this variation is 3750.

What is temperature?

Temperature is the degree of hotness or coldness of the object.

According to the ideal gas law, pV =nRT

where, p=pressure of gas, V =volume of gas, n=number of moles of element of gas, R=Universal Gas constant and T =temperature

When the temperature is constant,

PV =constant =k

k = 150x 25

k = 3750

Thus , the constant of proportionality is 3750.

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It would be really helpful if someone answered this.

Answers

Basically saying, the graph in the picture is a acute angle, at a different angle. The answer looks like 55 degrees

[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

According to first law of reflection, we know that :

Angle made by the incident ray and normal [ i.e angle of incidence ] is always equal to Angle made by the reflected ray and normal [ i.e Angle of reflection ]

Therefore, we can say that the missing angle (angle of reflection) has the same value as the angle of incidence which is equal to 45°

Please read the statement through to understand the procedure ~

Question 12 (True/Faise Worth 5 points)
The presence of free electrons makes a material a good insulator.
O True
O False

Answers

The statement is false. The truth is just the opposite. The presence of easily-moved electrons makes it a good conductor.

Active energy is a characteristic of _______ energy.

Answers

Answer:

Active energy is a characteristic of Kinetic energy

Water waves in a small tank are 6.6 m long. They travel at a speed of 2.9 m/s. What is the frequency of the water
waves?

Answers

Answer:

.439 Hz

Explanation:

Wavelength = 6.6 m

speed = 2.9 m/s

  2.9 = 6.6 f

f = 2.9/6.6 =  .439 Hz

Describe the electric and magnetic fields of an electromagnetic wave.

Answers

Answer:The electric field and magnetic field of an electromagnetic wave are perpendicular (at right angles) to each other. They are also perpendicular to the direction of the EM wave. EM waves travel with a constant velocity of 3.00 x 108 ms-1 in vacuum.

Explanation:

The long structure of small intestine is accommodated in small space within our body. Comment.

Answers

The long structure of small intestine is accommodated in small space within our body because of extensive coiling. the small intestine is highly coiled structure and thus can easily be fixed in a small space.

what is a short circuit

Answers

Answer:

It is a circuit that is easily damaged

A fragile or easily damaged circuit

Which statements describe some of the original ideas proposed about the universe during the big bang? check all that apply. the universe exploded. the universe was opaque. the universe was one second old. the universe was very hot and dense. the universe expanded from a single point.

Answers

The statements which describe some of the original ideas proposed about the universe during the big bang include:

The universe was opaque.The universe was very hot and dense.The universe expanded from a single point.

What is Big bang theory?

This is the theory about the formation of the universe which states that a single point began to expand which resulted in its formation.

This was as a result of observations and ideas which can be seen mentioned above.

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Answer:

B. The universe was opaque.

D. The universe was very hot and dense.

E. The universe expanded from a single point.

Explanation:

Students design an experiment to determine how much force is needed to move blocks of wood of different masses slowly across a lab table.

Which procedure should students include in their design?
A. conduct 5 trials, using a different scale to pull each block of wood
B. conduct 5 trials, pulling a different side of each block each time
C. conduct 5 trials, using a different table for each trial
D. conduct 5 trials, pulling each block of wood in the same way for each trial

Answers

the answer is D
conduct 5 trials, pulling each block of wood in the same way for each trial.

whenever you are conducting an experiment all trials have to be exactly the same

The time required by 1KW heater to raise the temperature of 10 liters through 10 degree selsius is in the of 5 m

Answers

The time required by the 1 KW heater to raise the temperature of 10 L of water is 418.4 s

Data obtained from the questionPower (P) = 1 KW = 1000 WVolume of water = 10 LMass of water (M) = 10 × 1000 = 10000 gChange in temperature (ΔT) = 10 °C Specific heat capacity (C) = 4.184 J/gºC Time (t) = ?

How to determine the time

Q = MCΔT

Q = Pt

Pt = MCΔT

Divide both sides by P

t = MCΔT / P

t = (10000 × 4.184 × 10) / 1000

t = 418.4 s

Complete question

What time is required for a 1kw heater to raise the temperature of 10 liters of water to 10 degree Celsius?

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A nuclear power plant is built alongside a river. what measurements should a monitoring station downstream record to be sure that the proper procedures are being followed at the power plant? density and radiation levels radiation levels and dust levels salt concentration and temperature temperature and radiation levels

Answers

Nuclear power plant should have monitoring units and water purifiers units, so thet they followed propress in the plant.

What is nuclear power plant?

Nuclear power plant is a structure that allows the generation of energy from the fission of toxic materials. It is usually due to the risk of accidents. Nuclear energy is very important for the generation of electricity in many countries.

Hence, water purifiers units should be used in the downstream to measure to protect river should be taken.

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Answer:

temperature and radiation levels

Explanation:

edge

Let each shake of the pennies or thumbtacks represent 1 year. what is the half life, in years, for the pennies in experiment 1? what is the half-life, in years, for the thumbtacks in experiment 2?

(5.4.3 lab - nuclear physics)

Answers

The half-life of the pennies in experiment 1 and 2 will be the time it takes for half the pennies to fall off after shaking.

What is Half-Life?

Half-Life is the time required for half the amount one a given substance to disappear or decay.

The half-lives of substances are usually constant values.

For example, the Half-Life of radioactive carbon-14 is 5700 years.

Therefore, the half-life of the pennies in experiment one and two will be the time it takes for half the pennies to fall off after shaking.

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Ronnie kicks a playground ball with an initial velocity of 16 m/s at an angle of 40° relative to the ground. what is the approximate horizontal component of the initial velocity? 0.64 m/s 0.77 m/s 10.3 m/s 12.3 m/s

Answers

The horizontal component of the velocity with which Ronnie kicks a playground ball is 12.3 m/s.

Horizontal component of the velocity

The horizontal component of the velocity with which Ronnie kicks a playground ball is calculated as follows;

Vx = Vcosθ

where;

V is the initial velocityθ is the angle of projection

Vx = 16 x cos(40)

Vx = 12.3 m/s

Thus, the horizontal component of the velocity with which Ronnie kicks a playground ball is 12.3 m/s.

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Answer:

D) 12.3

Explanation:

took the test

How can your physical health change with cardio activity? explain why.​

Answers

Answer:

Other benefits include:

Increases blood flow and decreases chances of stroke.Improves memory and thinking ability.Combats decline in brain functioning with age.Helps protect against developing Alzheimer's disease.Fights osteoporosis and reduces chances for a hip fracture.

Regular physical activity is one of the most important things you can do for your health. Being physically active can improve your brain health, help manage weight, reduce the risk of disease, strengthen bones and muscles, and improve your ability to do everyday activities.

Adults who sit less and do any amount of moderate-to-vigorous physical activity gain some health benefits. Only a few lifestyle choices have as large an impact on your health as physical activity.

Everyone can experience the health benefits of physical activity – age, abilities, ethnicity, shape, or size do not matter.

Which layer of the sun can easily be viewed by visible light?.

Answers

The photosphere can be easily viewed by visible light

2 neutral metal spheres, A and B, are touching each other.
A negatively charged rod is brought near to B.
(a) Draw the charges induced on the 2 spheres.

The negatively charged rod is now brought closer to touch B.
(b) Explain why A momentarily moves away from B.

i need help with b

Answers

Since the rod is brought near B, it becomes momentarily polarized, so the electrons in B move to A and it becomes net negative, and B is net positive. But since protons can’t move from sphere to sphere(only electrons) A also becomes polarized on its own, and all electrons are on the left and all protons on the right, since the protons are also attracted to the negative rod. Therefore, since unlike charges repel, A moves away from B.

A photon has an energy of 2.88 x 10^-18 j. convert this energy into ev.

Answers

Answer:

E = V Q        voltage * charge

Since the charge on an electron is      e = 1.6E-19    coulombs

the energy of 1 eV is 1.6E-19 joules

E = 2.88E-18 joules / 1.6E-19 joules/electron volt

E = 18 eV

What does the model below represent?
2CO + O2 ——-> 2002
O A. The production of oxygen
O B. An experiment
O C. A release of heat
O D. A chemical reaction

Answers

Answer:

D

Explanation:

Because we have two reactants and product

The _________ region is where a land or water air mass is formed.
Group of answer choices:

source

atmospheric

primary

hilly

Answers

Answer:

atmospheric

Explanation:

I think it’s atmospheric if I, wrong please tell me and I will fix it thanks!

Adrian plays basketball with Kevin on a basketball court that is completely level. After Adrian makes as basket, their ball rolls to a complete stop. what forces acted on the ball to cause it to stop rolling?
A. acceleration and gravity
B. friction and acceleration
C. gravity and friction
D. magnetic forces and friction ​

Answers

Answer:
C
Explanation:
The two things that make it so objects stop is gravity and friction.

An ammeter is a device that measures _____.

the type of charge on a resistor
the current through a resistor
the voltage across a resistor
the potential of the battery

Answers

B. The current through a resistor. An ammeter can measure a wide range of current values because at high values only a small portion of the current is directed through the meter mechanism; a shunt in parallel with the meter carries the major portion.

Line segment gj is a diameter of circle l. angle k measures (4x 6)°. circle l is inscribed with triangle g j k. line segment g j is a diameter. line segments g k and k j are secants. angle k has a measure of (4 x 6) degrees. what is the value of x? 21 24 32 44

Answers

The value of x in the given right triangle in a semicircle is determined as 21.

What is the measure of a triangle in a semicircle?

The triangle in a semicircle is always a right angle triangle.

From the figure shown, we can say that the triangle  G J K is right triangle and m<K = 90degrees.

Given that m<K = 4x + 6, we will can use the following equation to find the value of x as shown:

4x + 6 = 90

4x = 90 - 6

4x = 84

x = 21

Thus, the value of x in the given right triangle in a semicircle is determined as 21.

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A truck travels a curve of radius 17 m and the mass of the truck is 5,900kg. The force of the truck is F = 2.685 x ?

Answers

The acceleration of the truck is 45.5 m/s² and the velocity of the truck is 27.8 m/s.

Acceleration of the truck

The acceleration of the truck is calculated as follows;

F = ma

a = F/m

a = (2.685 x 10⁵)/(5900)

a = 45.5 m/s²

Velocity of the truck

a = v²/r

v² = ar

v² = 45.5 x 17

v² = 773.64

v = 27.8 m/s

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Tyra pushes the pedals of her bicycle with her feet to make it go faster. Which of Newton's laws is demonstrated by this action

Answers

The impressed force increases when Tyra pushes the pedals of her bicycle, the momentum of the bike increases hence it moves faster.

What are the laws of motion?

The Newton's laws of motion lay the foundation for dynamics. According to Newton's second law, the rate of change of momentum is directly proportional to the impressed force.

Hence, as the impressed force increases when Tyra pushes the pedals of her bicycle, the momentum of the bike increases hence it moves faster.

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a) The velocity of a moving body is t2 - t metres per second after a time of t seconds. Find the displacement of the body at the end of 12 seconds if the initial velocity is 0 metres per second.​

Answers

Explanation:

The integral of a velocity versus time function is a displacement versus time function

So we integrate,

[tex] {t}^{2} - t[/tex]

The integral of that is

[tex] \frac{1}{3} {t}^{3} - \frac{ {t}^{2} }{2} [/tex]

Plug in 12 for t,

[tex] \frac{1}{3} (12 {}^{3} ) - \frac{12 {}^{2} }{2} [/tex]

[tex]576 - 72 = 504[/tex]

So the displacement is 504 meters to the right.

vf = 12² - 12 = 132 m/s

a = vf' = 2t-1

at t =12 s,

a = 2(12)-1 = 23 m/s²

vf²=vi²+2ad (vi=initial velocity=0)

vf²=2ad

132² = 2 x 23 x d

d = 378.78 m

An 95 Watt TV is plugged into a 115 volt circuit.
The TV operates for 120 minutes. If the cost of energy is
8¢ per kW-hr, how much does it cost to run the TV
for 120 minutes?

Answers

120 min = 2 hours

95 x 2 : 1000 =0.19 kwh

8¢ x 0.19 kwh = 1.52¢

The cost of running the 95 W TV for 120 minutes if charged at 8 ¢ per kWhr is 1.52 ¢

How to determine the energyPower ( P) = 95 W = 95 / 1000 = 0.095 KWTime (t) = 120 mins = 120 / 60 = 2 hrEnergy (E) =?

E = Pt

E = 0.095 × 2

E = 0.19 KWhr

How to determine the cost of operationEnergy (E) = 0.19 KWhrCost per KWhr = 8 ¢ Cost =?

Cost = Energy × Cost per KWhr

Cost = 0.19 × 8

Cost = 1.52 ¢

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What is an example of an analogue signal?

Answers

Examples of analog signals are Human voice, Thermometer, Analog phones etc.

What is signal?

Signal is defined as an electromagnetic wave that carries information through a medium. In this, the data is converted into electromagnetic signal which may be analog or digital and then sent from sender to receiver.

Signal which are continuous as time varies are analog signals.

Thus, examples of analog signals are Human voice, Thermometer, Analog phones etc.

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Answer:

Examples of analog signals are Human voice, Thermometer, Analog phones etc. Examples of digital signals are Computers, Digital Phones, Digital pens, etc.

The coefficient of dynamic friction between the grass and a 200 kg football blocking sled is 0.20. If a football player only pushes horizontally against the sled, how large must the horizontal force be to keep the sled moving at constant velocity

Answers

The horizontal force be to keep the sled moving at constant velocity is 392 N.

Horizontal force applied to the sled

The horizontal force applied to the sled to prevent it from moving is calculated from Newton's second law of motion.

F - Ff = ma

where;

a is acceleration of the sled

at constant velocity, a = 0

F - μmg = m(0)

F - μmg  = 0

F = μmg

F = 0.2 x 200 x 9.8

F = 392 N

Thus, the horizontal force be to keep the sled moving at constant velocity is 392 N.

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