Physics, 11.10.2019 17:40 aurorasweetpea610

Question 1 (1 point)
in a magnet, what type of poles are attracted to each other?

question 1 options:

north poles

unlike or different poles

south poles

like poles

question 2 (1 point)
saved
magnets are surrounded by

question 2 options:

positively charged matter

gravitational fields

magnetic fields

electric fields

question 3 (1 point)
bar magnets have poles.

question 3 options:

4

3

1

2

question 4 (1 point)
saved
what elements have magnetic properties and will be attracted to magnets?

question 4 options:

sodium, cobalt and iron

iron, cobalt, and nickel

nickel, mercury and sodium

cobalt, sodium and mercury

question 5 (1 point)
saved
the movement or spinning of this subatomic particle is what creates magnetism.

question 5 options:

protons

neutrons

electrons

quarks

question 6 (1 point)
true or false: magnets are weakest at their poles.

question 6 options:
true
false
question 7 (1 point)
are devices that create a magnetic field through the application of electricity.

question 7 options:

magnets

electromagnets

motors

generators

question 8 (1 point)
true or false: electromagnets are beneficial because they can be turned on and off.

question 8 options:
true
false
question 9 (1 point)
saved
the earth has a protective magnetic field around it, that is created by

question 9 options:

molten iron in the earth's core.

the movement of tectonic plates.

molten iron in volcanoes.

the upward motion of mountain chains forming.

question 10 (1 point)
true or false: doorbells, scrap yards, and rock concerts are all examples of every day uses of electromagnets.

question 10 options:
true
false
question 11 (1 point)
true or false: electromagnets cannot lift heavy objects.

question 11 options:
true
false

Answers: 3

Show answers

Answers

Answer from: ashleyacosta

Question 1 - unlike or different poles

Question 2 - magnetic fields

Question 3 - 2

Question 4 - Iron, cobalt, and nickel

Question 5 - electrons

Question 6 - False

Question 7 - Electromagnets

Question 8 - True

Question 9 - molten iron in the Earth's core

Question 10 - True

Question 11 - False

I hope this helps

Answer from: sindy35111

Question 1 (1 point)

unlike or different poles

Explanation:

similar poles always repel each other while unlike poles always attracts each other

Question 2 (1 point)

Magnetic fields

Explanation:

Magnetic field is due to magnetic poles i.e. magnetic field lines originates from North pole and terminates at south pole

Question 3 (1 point)

Explanation:

All bar magnets must have two poles (1) North Pole (2) South Pole

Question 4 (1 point)

iron, cobalt and Nickel

Explanation:

all materials which have small magnetic domains which will increase the magnetic field when placed in external field is magnetic materials

Question 5 (1 point)

electrons

Explanation:

Due to spinning of electrons electric current will induce and this will induce a magnetic field and creates magnetism

Question 6 (1 point)

FALSE

Explanation:

Magnetic pole strength is maximum at their poles position

Question 7 (1 point)

Electromagnets

Explanation:

Electromagnets are devices that create a magnetic field through the application of electricity.

Question 8 (1 point)

TRUE

Explanation:

By switch off the current we can turn off the magnetism of electromagnets

Question 9 (1 point)

Molten iron in the Earth core

Explanation:

The earth has a protective magnetic field around it, that is created by molten iron in Earth core as it will induce electric current due to rotation of earth.

Question 10 (1 point)

True

Explanation:

Doorbells, scrap yards, and rock concerts are all examples of every day uses of electromagnets as in all of the above devices we can control magnetism by controlling current.

Question 11 (1 point)

FALSE

Explanation:

By the application of large number of turns and large magnitude of current Electromagnets can lift heavy objects.

Answer from: Quest

During the 1800s. hope this !

Answer from: Quest

The answer is trial 3.

Another question on Physics

Physics, 22.06.2019 00:30

Glass is transparent to visibile light under normal conditions; however, at extremely high intensities, glass will absorb most of the light incident upon it. this works through a process known as multiphoton absorption. in this process, several photons are absorbed at the same time. if very intense light whose photons carry 2ev of energy is shined onto a material with a band gap of 4ev, that light can be absorbed through two-photon absorption, because two photons have the right amount of energy to bridge the band gap. what is the minimum number of photons of 800-nm light that are needed to equal or exceed the band gap of fused silica glass

Answers: 1

Answer

Physics, 22.06.2019 01:30

Which example has gravitational potential energy? a.a horse slowing down from a run b.an apple about to fall from a tree branch c.a bicycle being pedaled down a horizontal path d.beaker sitting on the floor

Answers: 1

Answer

Physics, 22.06.2019 03:00

Which object is most likely represented by a dot?

Answers: 1

Answer

Physics, 22.06.2019 06:30

5submission this assignment is worth 20 points total. you are required to submit the following by next lab: 1. (3 points) determine the equation for the output angular velocity ω2 = θ˙ 2 as a function of θ1, ω1 = θ˙ 1 and α. you must show all your work to receive credit. 2. (2 points) use the result of problem#1 to plot ω2 over 0 ≤ θ1 ≤ 360deg with ω1 = 360deg/sec. do this for α = {10,30}deg. show the results on the same plot and properly label the axes, title, legend. for this you can use matlab or ms excel. 3. (3 points) determine the equation for the output angular acceleration ω˙ 2 and create a plot similar to the one in problem#2. 4. (10 points) submit plots of the results (ω2 and ω˙ 2) obtained from creo/mechanism and compare them to results of problem#2 and problem#3. note that you should do these comparisons for the two cases with α = {10,30}deg. 5. (2 points) provide a brief explanation of the results. did they match? what are the implications as misalignment angle increases?

Answers: 3

Answer

You know the right answer?

Question 1 (1 point)
in a magnet, what type of poles are attracted to each other?

Questions