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2 years ago

10

A mixture of sand, salt, iron and saw dust is given to you. You are asked to prove it is a mixture. Explain how you could possib

ly do this.

1 answer:

Triss [41]2 years ago

5 0

I’m not really sure if i’m being honest it doesn’t make sense to me

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Magnetic resonance imaging needs a magnetic field strength of 1.5 T. The solenoid is 1.8 m long and 75 cm in diameter. It is tig

pogonyaev

Answer:

The current needed is 1790.26 A

Explanation:

Given;

magnitude of magnetic field, B = 1.5 T

length of the solenoid, L = 1.8 m

diameter of the solenoid, d = 75 cm = 0.75 m

The magnetic field is given by;

$B = \frac{\mu_o NI }{L}$

Where;

μ₀ is permeability of free space = 4π x 10⁻⁷ m/A

I is current in the solenoid

N is the number of turns, calculated as;

$N = \frac{Length \ of\ solenoid}{diameter \ of \ wire} \\\\N = \frac{1.8}{1.5*10^{-3}} =1200 \ turns$

The current needed is calculated as;

$I = \frac{BL}{\mu_o N} \\\\I = \frac{1.5 *1.8}{4\pi *10^{-7} *1200} \\\\I = 1790.26 \ A$

Therefore, the current needed is 1790.26 A.

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3 years ago

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crimeas [40]

When light goes from one medium to another, it changes angle. This is why it will look bent.

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Which statement best describes the main idea of the poem

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Explanation:

option D ) is correct the speaker explain a difficult decision he had to make

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An arachnid has eight legs.

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