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3 years ago

One part of a freely swinging magnet always points

Physics

2 answers:

Sladkaya [172]3 years ago

8 0

One part of a freely swinging magnet always points to the Earth's magnetic pole in the Northern Hemisphere.

Readme [11.4K]3 years ago

3 0

Answer: The correct answer is (d).

Explanation:

Magnet has two poles: South pole and North pole. The same poles of the magnets repel each other. The opposite poles of the magnets attract each other.

In the absence of other magnet, a freely swinging magnet points in North-South direction. The earth has a magnetic field. The magnetic field of the bar magnet is same as the magnetic field of the earth's magnet.

The position of the earth's magnetic poles are not fixed. The south pole of the earth's magnet lies in the geographic north as it attracts the north pole of the freely swinging magnet.

If one part of a freely suspended magnet always points to Earth's magnetic pole in the Northern Hemisphere.

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A general wave equation is given as;

y(x, t) = A sin(Kx - ωt)

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From the given wave equation, we have,

y(x, t) = 0.048 sin(5.4x - 128t)

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where;

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λ = 2π/K

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λ = 1.164 m

<h3>Maximum speed of the wave</h3>

v(max) = Aω

where;

A is amplitude of the wave
ω is angular speed of the wave

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v(max) = 6.14 m/s

Thus, the wavelength of the wave is 1.164 m.

The velocity of the wave is 23.7 m/s.

The maximum speed in the y-direction of any piece of the string is 6.14 m/s.

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