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koban [17]
3 years ago
13

What is a solenoid?

Physics
2 answers:
muminat3 years ago
6 0

Answer: A solenoid is a current-carrying wire with many coils.

Explanation:

Solenoid: A long coil of wire wrapped of many turns. When the current passes in the coil then, the coil generate the magnetic field.

Solenoid converts electric current to magnetic current.

Formula of the magnetic field for solenoid

B = \dfrac{\mu NI}{L}

Here, B= magnetic field

N = number of turns

I = current

L = length of coil

The magnetic field inside the solenoid is proportional to the number of turns and current.

So, A solenoid is a current-carrying wire with many coils.

Katarina [22]3 years ago
3 0
<h2>(A) a current-carrying wire with many coils</h2>

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A 47.2 kg girl is standing on a 177 kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat,
Softa [21]

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v_g,i = 1.208 m/s

Explanation:

We are given;

Mass of girl; m_g = 47.2 kg

Mass of plank; m_p = 177 kg

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Let the velocity of plank to ice be v_p,i

Since the velocity of the girl is 1.53 m/s relative to the plank, then;

v_g,i + v_p,i = 1.53

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m_g × v_g,i = m_p × v_p,i

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v_g,i + ((v_g,i)/3.75) = 1.53

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