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2 years ago

PLEASE ANSWER ASAP!!

Physics

2 answers:

liq [111]2 years ago

8 0

As we know that magnetic field strength due to solenoid is given by

$B = \frac{\mu_0 N i}{L}$

here we know that

$\mu_0$ = permeability of air medium

N = number of turns

L = length of solenoid

i = electric current

Now as we enter the iron rod into the solenoid the medium will get change that will increase the permeability

so with the iron rod we will have

$B = \frac{\mu_0 \mu_r N i}{L}$

so correct answer will be

<u>It increases the magnetic field’s strength. </u>

Alina [70]2 years ago

6 0

It increases the magnetic field strength

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EleoNora [17]

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3 years ago

11 kg is a familiar weight for a bag of flour. You are baking cookies for a Save The Rain Forest fund drive. It takes 500 g of f

arlik [135]

Answer: 22 batches.

Explanation:

Given that 11 kg is a familiar weight for a bag of flour. Also, it is given that It takes 500 g of flour to make one batch of cookies.

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3 years ago

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frosja888 [35]

PART A)

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also we know that

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PART B)

Since we know that frequency of blue light is more than red light as well as wavelength of blue light is less than the wavelength of blue light so here blue light will have more energy

When blue light and red light strike the metal surface then due to more energy of blue light it will release some loosely bonded electrons from metal surface which will contribute in current.

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3 years ago

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ikadub [295]

I think the answer is A?

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2 years ago

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suter [353]

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3 years ago