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Sav [38]
2 years ago
7

Where are the magnetic fields strongest near a bar magnet?

Physics
1 answer:
mixer [17]2 years ago
6 0
<h2>ANSWER:</h2>
  • <u>The north pole</u>

  • The magnetic field of a bar magnet is strongest at either pole of the magnet. It is equally strong at the north pole when compared with the south pole. The force is weaker in the middle of the magnet and halfway between the pole and the center.

CarryOnLearning(◍•ᴗ•◍)

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A piece of aluminum has a volume of 4.89 x 10-3 m3. The coefficient of volume expansion for aluminum is = 69 x 10-6(C°)-1. The t
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Explanation:

Volume of aluminium = V = 4.89×10⁻³ m³

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Final temperature = 357°C

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Change in temperature = ΔT= 357-19.1 = 337.9 °C

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ΔV = αVΔT

⇒ΔV = 69×10⁻⁶×4.89×10⁻³×337.9

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⇒W = 11.515 J

∴ Work is done by the expanding aluminum is 11.515 Joule

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