Running the lid of a tight-fitting jar under hot water causes it to expand due to thermal expansion, which makes it easier to remove from the jar.
When the lid of a tight-fitting jar is run under hot water, it undergoes thermal expansion due to the increase in temperature. The expansion of the lid causes it to slightly loosen, making it easier to remove from the jar. This happens because metals have higher coefficients of expansion than glass, so the lid expands more than the jar itself.
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4. If the north pole of a bar magnet is brought near the _ pole of another magnet, the two magnets will repel one another.
5. A material that's attracted by a magnet but doesn't necessarily become a magnet itself is called
a/an _ material.
Every magnet has two unlike poles.
The neutral region within a magnet lies between the north and south poles.
If the north pole of a bar magnet is brought near the north pole of another magnet, the two magnets will repel one another.
A material that's attracted by a magnet but doesn't necessarily become a magnet itself is called a ferromagnetic material.
A magnet is a material or object that produces a magnetic field. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials, such as iron, steel, nickel, cobalt, etc. and attracts or repels other magnets.
Ferromagnetic materials are those materials which exhibit a spontaneous net magnetization at the atomic level, even in the absence of an external magnetic field. When placed in an external magnetic field, ferromagnetic materials are strongly magnetized in the direction of the field.
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Answer:
Four metals other than iron that can be made to exhibit magnetic properties are nickel, cobalt, manganese, and chromium.
two
neutral region
north
magnetic
Explanation:
B) rotation of the earth.
C) orbit of the earth around the sun.
D) orbit of the sun around the earth.