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Contact [7]
2 years ago
15

What happens to an iron bar when it is placed within the coils of a solenoid

Physics
2 answers:
Len [333]2 years ago
7 0
<h3><u>Answer;</u></h3>

it becomes a magnet.

<h3><u>Explanation;</u></h3>
  • When an iron bar is placed within the coils of a solenoid it becomes a magnet. This type of a magnet is called an electromagnet.
  • An electromagnet is made by placing a ferromagnetic material such as iron in a solenoid of a closed circuit.
  • Electromagnets are used in all kinds of electric devices including hard disk drives, generators, motors, etc.
Rina8888 [55]2 years ago
6 0
When the iron bar is placed within the coils of a solenoid it then becomes a magnet.  
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What material structure explanation lies behind the fact that the propagation velocity of longitudinal waves is the lowest in ga
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What material structure explanation lies behind the fact that the propagation velocity of longitudinal waves is the lowest in gases and the highest in solids?

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2 years ago
Three identical train cars, coupled together, are rolling east at 1.8 m/s . A fourth car traveling east at 4.5 m/s catches up wi
Vedmedyk [2.9K]

Answer:

v = 1.98\ m/s

Explanation:

consider the mass of each train car be m

m₁ = m₂ = m₃ = m

speed of the three identical train

u₁ = u₂ = u₃ = 1.8 m/s

m₄ = m             u₄ = 4.5 m/s

m₅ = m              u₅ = 0 (initial velocity )

final velocity

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using conservation of momentum

m₁u₁ + m₂u₂ + m₃u₃ + m₄u₄ + m₅u₅ = m₁v₁ + m₂v₂ + m₃v₃ + m₄v₄ + m₅v₅

m (1.8 + 1.8 + 1.8 +4.5) = 5 m v

v = \dfrac{9.9}{5}

v = 1.98\ m/s

5 0
2 years ago
A force of 10 N pressing on an area of 2m2. Calculate the pressure please answer fast it’s a test rn
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Question: What is the frequency of a wave that has a wave speed of 120 m/s and a wavelength of 0.40 m?

Answer: The equation that relates frequency of a wave to a waves speed and wavelength is Speed of Wave= Frequency X Wavelength. Since you are given speed and wavelength, you plug those two known numbers into the equation, 120= Frequency X 0.40. You then divide 120 by .4 to get your frequency of 300.

Explanation: this might help for

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2 years ago
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