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Eddi Din [679]
3 years ago
8

certain superconducting magnet in the form of a solenoid of length 0.34 m can generate a magnetic field of 6.5 T in its core whe

n its coils carry a current of 90 A. The windings, made of a niobium-titanium alloy, must be cooled to 4.2 K. Find the number of turns in the solenoid.
Physics
1 answer:
densk [106]3 years ago
8 0

Answer:

The number of turns in the solenoid is 1.95 x 10⁴.

Explanation:

given information:

the length of solenoid, L = 0.34 m

magnetic field, B = 6.5 T

current, I = 90 A

to find the number of turn in solenoid, we can start from the magnetic field equation,

B = μ₀nI, n = N/L

B = magnetic field (T)

μ₀ = permeability (4π × 10⁻⁷ T.m/A)

n = the number turn per unit length (turn/m)

I = current (A)

N = the number turn in solenoid

L = the length of solenoid

thus,

B = μ₀IN/L

N = B L/μ₀I

   = (6.5) (0.34)/(4π × 10⁻⁷) (90)

   = 1.95 x 10⁴ turn

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A proton having an initial velvocity of 20.0i Mm/s enters a uniform magnetic field of magnitude 0.300 T with a direction perpend
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The time interval for which the proton remains in the field is -

Δt = $\frac{\pi R}{40}.

We have a proton entering a uniform magnetic field which is in a direction perpendicular to the proton's velocity.

We have to determine time interval during which the proton is in the field.

<h3>What is the magnitude of force on the charged particle moving in a uniform magnetic field?</h3>

The magnitude of force on the charged particle moving in a uniform magnetic field is given by -

F = qvB sinθ



According to the question, we have -

Entering Velocity (v) = 20 i  m/s

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Now -

The entering and leaving velocity vectors have 90 degrees difference between them. Therefore, only a quarter of distance of the complete circular path of radius 'R' is traced by the proton. Therefore -

d = $\frac{2\pi r}{4} = $\frac{\pi R}{2}

Since, the radius of circular path is not given, we will assume it R.

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t = $\frac{\pi R}{2v} = \frac{\pi R}{40}

Hence, the time interval for which the proton remains in the field is -

Δt = $\frac{\pi R}{40}

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6 0
1 year ago
A pipe of length 10.0 m increases in length by 1.5 cm when its temperature is increased by 90°F. What is its coefficient of line
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The coefficient of linear expansion, given that the length of the pipe increased by 1.5 cm is 1.67×10¯⁵ /°F

<h3>How to determine the coefficient of linear expansion</h3>

From the question given above, the following data were obtained

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The coefficient of linear expansion can be obtained as illustrated below:

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α = 0.015 / 900

α = 1.67×10¯⁵ /°F

Thus, we can conclude that the coefficient of linear expansion is 1.67×10¯⁵ /°F

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3 0
1 year ago
Natalie accelerate her skateboard along a straight path from 0 m/s to 4.0 m/s in 2.5 s. find her average acceleration
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Answer: the acceleration would be 1.6 m/s²
8 0
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