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4 years ago

Help??!?! I honestly forgot

Mathematics

2 answers:

dmitriy555 [2]4 years ago

8 0

Commutative property of addition

stealth61 [152]4 years ago

3 0

I think its D distributive property

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segment BC is an are of a circle with radius 30.0 cm, and point P is at the center of curvature of the arc Segment DA is an arc

Elan Coil [88]

Answer:

The magnetic field is $B = 3.87 *10^{-6} \ T$

Direction is inward

Step-by-step explanation:

The diagram for this question is shown on the first uploaded image

From the question we are told that

The radius of BC is $r_{BC} = 30 \ cm = 0.30 \ m$

The radius of DA is $r _{DA} = 20 \ cm = 0.20 \ m$

The length of CD is $r_{CD} = 10 cm = 0.1 \ m$

The length of AB is $r_{AB} = 10 cm = 0.1 \ m$

The current is $I = 11.4A$

The magnetic field is mathematically represented as

$B = B_{BC} + B_{DA} + B_{CD} + B_{AB}$

$B = \frac{\mu_o I}{4 \pi } [ \frac{\theta_{DA}}{r_{DA}} + \frac{\theta_{BC}}{r_{BC}}+ \frac{\theta_{CD}}{r_{CD}}+\frac{\theta_{AB}}{r_{AB}}]$

Where

$\theta_{BC} = \theta_{DA} = \frac{2\pi}{3}$

Where $\frac{2 \pi}{3} = 120^o$

$\theta_{CD} = \theta_{AB} = 0^o$

$B = \frac{\mu_o I}{4 \pi } [ \frac{\frac{2\pi}{3} }{0.20} - \frac{\frac{2\pi}{3}}{0.30}}+ \frac{0}{0.10}+\frac{0}{0.10}]$

$B = 3.87 *10^{-6} \ T$

The direction is into the page

This because the magnitude of the magnetic field due to arc BC whose direction is outward is less than that of DA whose direction is inward

This is because according to Fleming's Left Hand Rule the direction of current is perpendicular to the direction of magnetic field so since current in arc BC and DA are moving in opposite direction their magnetic field will also be moving in opposite direction

3 0

3 years ago

What is is a mean in math

ivann1987 [24]

Answer:

Step-by-step explanation:

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3 years ago

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6x times (-2y)<br><br> Urgent please send solution

Gwar [14]

Answer:

_2y6x

Step-by-step explanation:

this is the answer

I hope it will helps you

4 0

3 years ago

Which solution set is graphed on the number line?-4-3-2_10123+4x 51ООX51

Rudik [331]

Explanation:

In this number line the solution set that's graphed is all numbers less than 1. It doesn't include 1 because that point is graphed with an empty circle.

Answer:

x < 1

5 0

1 year ago

Solve for the variable. 16 19 21 25

garik1379 [7]

Answer:

The answer is D, 25

Step-by-step explanation:

m/20= 4/5 Cross mutiply, m x 4, 20 x 5

4m = 100 Isolate the variable by dividing 4 on both sides

m = 25

<h3><em><u>Hope this helps!!! </u></em></h3><h3><em><u>Please mark this as brainliest!!! </u></em></h3><h3><em><u>Thank You!!! </u></em></h3><h3><em><u>:) </u></em></h3>

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3 years ago

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