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KengaRu [80]
3 years ago
8

When a compass needle settles down in a magnetic field, _______. the needle aligns itself with the field, the south end of the c

ompass needle pointing in the direction of the field the axis of the needle is perpendicular to the field the needle aligns itself with the field, the north end of the compass needle pointing in the direction of the field where the needle points depends upon how the compass case is oriented

Physics
1 answer:
Rus_ich [418]3 years ago
7 0

Answer:

The needle aligns itself with the field, the north end of the compass needle pointing in the direction of the field.

Explanation:

When the current flows through the coil, magnetic field is generated. When the compass is placed in the field, the needle aligns itself along the field. The north of the compass points in the direction of the field.

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Answer:

The amount of potential energy that was initially stored in the spring is 88.8 J.

Explanation:

Given that,

Mass of block = 1.60 kg

Angle = 30.0°

Distance = 6.55 m

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Using formula of conservation of energy between point A and B

U_{A}+k_{A}+w_{A}=U_{B}+k_{B}

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U_{A}=0.50\times1.60\times9.8\cos30\times6.55+1.60\times9.8\times6.55\sin30+\dfrac{1}{2}\times1.60\times(7.50)^2

U_{A}=88.8\ J

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